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smart sunroof system. In the previous project experiment, we already know

the working principle of Steam Sensor, then in this project experiment, we

combine Steam Sensor, Micro:bit, and yellow LEDs, making a simple rain

alarm.

(2)Test Code:

The route to get test codes（

How to load?

）

File Type

Route

File Name

Hex file

KS4027

folder/Makecode

Tutorial/Makecode Code/Expansion

Projects/Project 11：Rains Alarm

Project 11：Rains

Alarm.hex

You can also drag blocks to form code.

Command blocks can be found on the right as shown below:

Содержание KS4028

Страница 1: ...round Information about Micro bit 10 1 What is Micro bit 10 2 Layout 11 3 Pinout 13 4 Notes for the application of Micro bit main board 14 4 2 Install Micro bit driver 16 5 Getting Started with Micro...

Страница 2: ...etection 128 Project 6 Geomagnetic Sensor 142 Project 7 Accelerometer 156 Project 8 Light Brightness Detection 167 Project 9 Speaker 176 Project 10 Touch sensitive Logo 189 Project 11 Microphone 193 P...

Страница 3: ...t 13 Gas Leakage Detector 331 Project 14 DHT11 Temperature and Humidity Sensor 336 Project 15 Temperature and Humidity Display 347 Project 16 Multiple Functions 351 Project 17 BT controlled LED 354 Pr...

Страница 4: ...sed on the open source hardware of Micro bit and designed for those who dream of living a more comfortable life with the help of technologies This smart home system with Micro bit as its control board...

Страница 5: ...s the most widely used graphical programming environment on the micro bit official website It is based on the graphical programming environment developed by Microsoft s open source project MakeCode Th...

Страница 6: ...eyestudio com 1 Micro bit Main Board 1 2 Keyestudio Micro bit Expansion Board with IO Port 1 3 Wooden Board 7 4 Acrylic Board 3 5 6812 RGB Module 1 6 Analog Gas Sensor 1 7 130 Motor Module 1 8 Steam S...

Страница 7: ...Humidity Sensor 1 10 PIR Motion Sensor 1 11 Yellow LED Module 1 12 Rechargeable Lithium Battery Power Module with Solar and USB Ports 1 13 Battery Holder 1 14 Micro bit Solar Energy Panel 1 15 Servo 2...

Страница 8: ...Wire 2 20 20cm F F DuPont Wire 4 21 20cm 4Pin F F DuPont Wire 1 22 200mm 2Pin DuPont Wire 2 23 M2 8MM Round head Screw 3 24 M1 4 6MM Round head Self tapping Screw 10 25 M3 Nickel plated Self locking N...

Страница 9: ...ickel plated Nut 18 31 M3 Nickel plated Nut 6 32 M2 Nickel plated Nut 7 33 M3 8MM Round head Screw 2 34 Wrench 1 35 3 0 40MM Screwdriver Red Black 1 36 2 0 40MM Screwdriver Purple Black 1 37 M3 45MM D...

Страница 10: ...he core device is a 32 bit Arm Cortex M4 with FPU micro processing Though it is just the size of a credit card the Micro bit main board is equipped with loads of components including a 5 5 LED dot mat...

Страница 11: ...t also supports a variety of codes and graphical programming platforms and is compatible with almost all PCs and mobile devices It has no need to install drivers It is of high integration of electroni...

Страница 12: ...ld it tight the red LED will slowly get darker When the power indicator flickers into darkness releasing the button and your Micro Bit board will enter sleep mode for power saving This will make the b...

Страница 13: ...w keyestudio com https tech microbit org hardware https microbit org new microbit https www microbit org get started user guide overview https microbit org get started user guide features in depth 3 P...

Страница 14: ...6 P7 P8 P9 P11 P12 P13 P14 P15 P16 P19 P20 Occupied P3 LED Col3 P4 LED Col1 P5 Button A P6 LED Col4 P7 LED Col2 P10 LED Col5 P11 Button B Browse the official website for more details https tech microb...

Страница 15: ...to power the main board via the USB interface or via the battery of 3V The IO port of this board is 3V so it does not support sensors of 5V If you need to connect sensors of 5 V a Micro Bit expansion...

Страница 16: ...t org code which has a graphical MakeCode program easy for use 4 2 Install Micro bit driver Micro bit is free of driver installation However in case your computer fail to recognize the main board you...

Страница 17: ...is attached below https microbit org guide quick Step 1 connect the Micro Bit main board with your computer Firstly link the Micro Bit main board with your computer via the USB cable Macs PCs Chromebo...

Страница 18: ...ed When your computer communicates with the main board via the USB cable the yellow LED on it will flashes For example it will flicker when you burn a hex file Then Micro bit main board will appear on...

Страница 19: ...Create to edit If you are running Windows 10 system it is also viable to edit on the APP MakeCode for micro bit which is exactly like editing in the website And the link to the APP is https www micro...

Страница 20: ...20 www keyestudio com...

Страница 21: ...area and then run your program in Simulator of MakeCode editor as shown in the picture below which demonstrates how to edit heartbeat program The path to the demonstration video 2 Makecode Tutorial Ma...

Страница 22: ...22 www keyestudio com Click the arrow behind JS JavaScript to choose between JavaScript or Python and you will find the corresponding program in JavaScript language or Python language as shown below...

Страница 23: ...gram what you will have to do to download the program to your Micro Bit main board is merely clicking the Download button then all is done If you are writing program through the website following thes...

Страница 24: ...le is downloaded copy it to your board just like the process that you copy the file to the USB driver If you are running Windows system you can also right click and select Send to MICROBIT E to copy t...

Страница 25: ...25 www keyestudio com You can also directly drag the hex file onto the MICROBIT E disk...

Страница 26: ...side of the board flashes When the copy is completed the yellow signal light will stop flashing and remain on Step 4 run the program After the program is uploaded to the Micro bit main board you coul...

Страница 27: ...ve access to hexadecimal files hex and save no other files Step 5 about other programming languages This chapter has described how to use the Micro bit main board But except for the Makecode graphical...

Страница 28: ...go 5 2 Makecode Browse https makecode microbit org and enter Makecode online editor or open the APP MakeCode for micro bit of Windows 10 Click New Project and input heartbeat then click create to ente...

Страница 29: ...s once while forever implies that the code runs cyclically 5 3 Quick Download As mentioned before if your computer is Windows 10 and you have downloaded the APP MakeCode for micro bit to write program...

Страница 30: ...for Linux macOS and Windows 10 the process can be quicker too We use the webUSB function of Chrome to allow the internet page to access the hardware device connected USB You could refer to the followi...

Страница 31: ...31 www keyestudio com Click Next...

Страница 32: ...32 www keyestudio com Click another Next...

Страница 33: ...or selection please refer to https makecode microbit org device usb webusb troubleshoot And for updating the firmware of the Micro bit https microbit org guide firmware If the links are too troublesom...

Страница 34: ...34 www keyestudio com in the folder we provided in the link https fs keyestudio com KS4027 4028 Click Done to finish the pairing...

Страница 35: ...35 www keyestudio com...

Страница 36: ...36 www keyestudio com Download program After the pairing click download to directly download the program to the board If it is successfully downloaded the icon will shift to...

Страница 37: ...have made a makecode extension library for this smart home kit Add smart home extension library Please follow the following steps to add extension files Open Makecode to enter a certain project click...

Страница 38: ...38 www keyestudio com Or click Advanced to select Extensions as shown below...

Страница 39: ...39 www keyestudio com Input the link https github com keyestudio2019 ks_IoT to search Tap the searching result IoT_keyestudio to download and install it This process may take a few seconds...

Страница 40: ...40 www keyestudio com After the installation you can find the extension files DHT11 DHT22 and I2C_LCD1602 on the left side And extension file Neopixel is also installed...

Страница 41: ...41 www keyestudio com...

Страница 42: ...42 www keyestudio com...

Страница 43: ...roject Therefore when you create a new IoT_keyestudio project you will need to add these extension files again Update or delete the IoT_keyestudio extension files Please follow the following steps to...

Страница 44: ...44 www keyestudio com Click the Explorer on the left side...

Страница 45: ...eyestudio com You can find these added files in the list Click the dustbin icon beside the file to delete the corresponding file Tap the refresh icon to update the corresponding IoT_keyestudio extensi...

Страница 46: ...urces and test code We also provide a link https fs keyestudio com KS4027 4028 containing the information of the product from relevant tools to test codes tutorials and troubleshooting methods as well...

Страница 47: ...rag the code blocks to complete the program for each project For simple projects dragging a block of code to complete the program is recommended For complex projects it is recommended to conduct the p...

Страница 48: ...48 www keyestudio com Click Import File...

Страница 49: ...49 www keyestudio com Select Makecode Code Project 1_ Heart beat Project 1_ Heart beat hex Then click Go ahead...

Страница 50: ...o importing the test code file provided into the Makecode compiler above you can also drag the the test code file provided into the code editing area of the Makecode compiler as shown in the figure be...

Страница 51: ...ome Therefore digital signal or analog signal of sensors and modules cannot be shown on the serial port simulator However you need to read the corresponding digital signal or analog signal So what can...

Страница 52: ...serial port Download CoolTerm program https freeware the meiers org After the download we need to install CoolTerm program file below is PC Window system taken as an example 1 Choose win to download t...

Страница 53: ...www keyestudio com 3 Double click please make sure that the driver of Micro bit is installed and the main board is connected with the computer The functions of each button on the Toolbar are listed be...

Страница 54: ...Open a saved Connection Save the current Connection to disk Open the Serial Connection Close the Serial Connection Clear the Received Data Open the Connection Options Dialog Display the Terminal Data...

Страница 55: ...55 www keyestudio com 6 Install the Smart Home Part 1 Component s Needed...

Страница 56: ...56 www keyestudio com Installation Diagram Prototype Part 2...

Страница 57: ...57 www keyestudio com Component s Needed Installation Diagram...

Страница 58: ...58 www keyestudio com Prototype Part 3 Component s Needed...

Страница 59: ...59 www keyestudio com Installation Diagram...

Страница 60: ...ing windows to 0 Wiring Connect the main board with the shield and with the computer via USB cable Plug them up Turn the slide switch on the board to the ON end and the rocker switch to the 1 end Micr...

Страница 61: ...61 www keyestudio com Example code After uploading the example code to Micro bit the angle of the servo is set to 0 Part 4...

Страница 62: ...62 www keyestudio com Component s Needed peel the sticker off the gear shaped Acrylic board first Installation Diagram...

Страница 63: ...63 www keyestudio com Prototype Part 5 Component s Needed...

Страница 64: ...64 www keyestudio com Installation Diagram Prototype...

Страница 65: ...65 www keyestudio com Part 6 Component s Needed peel the sticker off the Acrylic board first...

Страница 66: ...66 www keyestudio com Installation Diagram The gears of the N Board should be properly jointed with the wooden gear and do not fix the self locking nut tight after installation the door is closed...

Страница 67: ...67 www keyestudio com Prototype Part 7...

Страница 68: ...68 www keyestudio com Component s Needed Installation Diagram...

Страница 69: ...69 www keyestudio com Prototype Part 8...

Страница 70: ...70 www keyestudio com Component s Needed Installation Diagram...

Страница 71: ...71 www keyestudio com Prototype Part 9 Component s Needed...

Страница 72: ...72 www keyestudio com Installation Diagram Prototype Part 10...

Страница 73: ...73 www keyestudio com Component s Needed...

Страница 74: ...74 www keyestudio com Installation Diagram stick the solar panel along the right side of the line marked in the picture pull the wires on the panel out from the hole in the middle Prototype Part 11...

Страница 75: ...75 www keyestudio com Component s Needed Installation Diagram...

Страница 76: ...76 www keyestudio com Prototype Part 12 Component s Needed...

Страница 77: ...77 www keyestudio com Installation Diagram Prototype Part 13...

Страница 78: ...78 www keyestudio com Component s Needed Installation Diagram...

Страница 79: ...79 www keyestudio com Prototype Part 14 Component s Needed...

Страница 80: ...80 www keyestudio com Installation Diagram Prototype Part 15...

Страница 81: ...81 www keyestudio com Component s Needed Installation Diagram...

Страница 82: ...82 www keyestudio com Prototype Part 16 Component s Needed...

Страница 83: ...83 www keyestudio com Installation Diagram Prototype Part 17...

Страница 84: ...84 www keyestudio com Component Needed...

Страница 85: ...85 www keyestudio com Installation Diagram Prototype...

Страница 86: ...86 www keyestudio com Part 18 Component s Needed...

Страница 87: ...87 www keyestudio com Installation Diagram Prototype Part 19...

Страница 88: ...88 www keyestudio com Component s Needed peel the sticker off the Acrylic board first...

Страница 89: ...89 www keyestudio com Installation Diagram...

Страница 90: ...90 www keyestudio com Prototype Part 20 Component s Needed...

Страница 91: ...91 www keyestudio com Installation Diagram...

Страница 92: ...92 www keyestudio com Prototype Part 21...

Страница 93: ...93 www keyestudio com Component s Needed...

Страница 94: ...94 www keyestudio com Installation Diagram...

Страница 95: ...95 www keyestudio com Prototype Start Wiring...

Страница 96: ...96 www keyestudio com The wiring of the battery holder plug its jack to the BAT end of the rechargeabl e power module...

Страница 97: ...97 www keyestudio com The wiring of the yellow LED The wiring of the RGB module...

Страница 98: ...98 www keyestudio com The wiring of the PIR motion sensor The wiring of the 1602LCD...

Страница 99: ...99 www keyestudio com The wiring of the analog gas sensor The wiring of the humidity and temperature sensor...

Страница 100: ...100 www keyestudio com The wiring of the servo controlling the door The wiring of the servo controlling the window...

Страница 101: ...101 www keyestudio com The wiring of the rechargeabl e lithium battery power module Connect the shield with it attach the red wire to V and the black one to G...

Страница 102: ...102 www keyestudio com The wiring of the solar panel...

Страница 103: ...103 www keyestudio com The wiring of the motor Please pay attention to the pins and the connection cannot be reversed...

Страница 104: ...104 www keyestudio com The wiring of the steam sensor Connect it to the P0 of 3 3V or the analog value can not be read Mount the Roof...

Страница 105: ...105 www keyestudio com Component s Needed Installation Diagram...

Страница 106: ...106 www keyestudio com Prototype Installation Diagram...

Страница 107: ...107 www keyestudio com Prototype...

Страница 108: ...108 www keyestudio com Install Micro bit main board Prototype...

Страница 109: ...micro bit main board a Micro USB cable and a computer The micro bit LED dot matrix will display a relatively big heart shaped pattern and then a smaller one This alternative change of this pattern is...

Страница 110: ...our computer via the USB cable 4 Test Code The route to get test codes How to load File Type Path File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 1 Heart beat Pro...

Страница 111: ...t org reference to find more information about micro bit blocks Then this link https makecode micro bit org can help you write code Command blocks can be found on the right Make combinations of these...

Страница 112: ...keeping the connection with the computer to power the main board the LED dot matrix shows pattern and then alternatively Please refer to chapter 5 3 to know how to download test code quickly If the do...

Страница 113: ...duction In this project we intend to control a certain LED of the micro bit main board to shine 2 Components Needed Micro bit main board 1 USB cable 1 3 Connection Diagram Attach the Micro bit main bo...

Страница 114: ...this matrix as a coordinate system and create two aces by marking those in rows from 0 to 4 from top to bottom and the ones in columns from 0 to 4 from the left to the right Therefore the LED sat in...

Страница 115: ...Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 2 Light A Single LED Project 2 Light A Single LED hex You can also drag blocks to form code Command blocks can be found on t...

Страница 116: ...116 www keyestudio com Make combinations of these blocks...

Страница 117: ...ications in LED advertisement screens elevator floor display bus stop announcement and so on The LED dot matrix of Micro Bit main board contains 25 LEDs in a grid Previously we have succeeded in contr...

Страница 118: ...Components Needed Micro bit main board 1 USB cable 1 3 Connection Diagram Attach the Micro bit main board to your computer via the Micro USB cable 4 Test Code The route to get test codes How to load F...

Страница 119: ...com Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 3 LED Dot Matrix Project 3 LED Dot Matrix hex You can also drag blocks to form code Command blocks can be found on the r...

Страница 120: ...120 www keyestudio com Make combinations of these blocks...

Страница 121: ...ows a downward arrow word Hello a heart pattern an arrow pointing at northeast then at southeast then at southwest and then at northwest Project 4 Programmable Buttons 1 Project Introduction Buttons c...

Страница 122: ...grammable buttons can input three different signals We can press button A or B alone or press them together and the LED dot matrix shows A B and AB respectively Let s get started 2 Components Needed M...

Страница 123: ...codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 4 Programmable Buttons Project 4 Code 1 hex You can also drag blocks to form co...

Страница 124: ...ode to micro bit main board and powering the main board via the USB cable the 5 5 LED dot matrix shows A if button A is pressed and then released B if button B pressed and released and AB if button A...

Страница 125: ...e Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 4 Programmable Buttons Project 4 Code 2 hex You can also drag blocks to form code Command blocks can be fo...

Страница 126: ...126 www keyestudio com...

Страница 127: ...127 www keyestudio com Make combinations of these blocks...

Страница 128: ...duce Project 5 Temperature Detection 1 Project Introduction The Micro bit main board is not equipped with a temperature sensor but uses the temperature sensor built into NFR52833 chip for temperature...

Страница 129: ...agram Attach the Micro bit main board to your computer via the USB cable 4 Test Code 1 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makeco...

Страница 130: ...130 www keyestudio com You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 131: ...131 www keyestudio com...

Страница 132: ...132 www keyestudio com Make combinations of these blocks...

Страница 133: ...com 5 Test Result 1 After uploading test code 1 to micro bit main board powering the main board via the USB cable and clicking Show console Device the data of temperature shows in the serial monitor p...

Страница 134: ...hen you touch the processor nNRF52833 on the board for a while its temperature will rise gradually and the CoolTerm serial monitor will show the change of temperature in the current environment as sho...

Страница 135: ...l need to use the CoolTerm serial monitor software to read data You could open CoolTerm software click Options select SerialPort set COM port and put baud rate to 115200 after testing the baud rate of...

Страница 136: ...136 www keyestudio com temperature in the current environment as shown in the figures below...

Страница 137: ...137 www keyestudio com...

Страница 138: ...138 www keyestudio com...

Страница 139: ...studio com 6 Test Code 2 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 5 Temperature Detection Project 5...

Страница 140: ...140 www keyestudio com You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 141: ...141 www keyestudio com Make combinations of these blocks Please note that the value 35 in the statement below can be changed according to real situation...

Страница 142: ...e is equivalent to or greater than 35 the pattern appears Project 6 Geomagnetic Sensor 1 Project Introduction This project aims to explain the use of the Micro bit geomagnetic sensor which can not onl...

Страница 143: ...will be checked The main component of a common compass is a magnetic needle which can be rotated by the geomagnetic field and point toward the geomagnetic North Pole which is near the geographic Sout...

Страница 144: ...B cable 1 3 Connection Diagram Attach the Micro bit main board to your computer via the USB cable 4 Test Code 1 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder...

Страница 145: ...145 www keyestudio com Code Project Code Project 6 Geomagnetic Sensor You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 146: ...em will make an automatic requirement if it is used for the first time 5 Test Result1 After uploading Test Code 1 to micro bit main board and powering the board via the USB cable and pressing the butt...

Страница 147: ...n process is completed pressing the button A will make the magnetometer reading display directly on the screen And the direction north east south and west correspond to 0 90 180 and 270 respectively 6...

Страница 148: ...estudio com file Tutorial Makecode Tutorial Project Code Project 6 Geomagnetic Sensor Code 2 hex This module can keep reading data to determine direction so does point to the current magnetic North Po...

Страница 149: ...er right when the value ranges from 292 5 to 337 5 Because 0 5 can t be input in the code the values we get are 293 and 338 Then add other statements to make a set of complete code You can also drag b...

Страница 150: ...150 www keyestudio com...

Страница 151: ...151 www keyestudio com...

Страница 152: ...152 www keyestudio com Make combinations of these blocks...

Страница 153: ...153 www keyestudio com...

Страница 154: ...154 www keyestudio com...

Страница 155: ...155 www keyestudio com 7 Test Result 2 Upload code 2 and plug micro bit into power After calibration tilt micro bit board and the LED dot matrix displays the direction signs...

Страница 156: ...with a resolution of 8 10 12 bits The code section sets the range to 1g 2g 4g and 8g We often use accelerometer to detect the status of machines In this project we will introduce how to measure the po...

Страница 157: ...e USB cable 4 Test Code 1 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 7 Accelerometer Project 7 Code 1...

Страница 158: ...158 www keyestudio com Make combinations of these blocks 5 Test Result 1...

Страница 159: ...Micro Bit main board no matter at any direction the LED dot matrix displays the digit 1 When it is kept upright make its logo above the LED dot matrix the number 2 shows When it is kept upside down m...

Страница 160: ...rd is tilted to the left the LED dot matrix shows the number 6 as shown below When the board is tilted to the right the LED dot matrix displays the number 7 as shown below When the board is knocked to...

Страница 161: ...s function you can also set the acceleration to 3g 6g or 8g But still we do not recommend 6 Test Code 2 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecod...

Страница 162: ...162 www keyestudio com Command blocks...

Страница 163: ...163 www keyestudio com Make combinations of these blocks...

Страница 164: ...164 www keyestudio com 7 Test Result 2 Upload test code to micro bit main board power the main board via the USB cable and click Show console Device...

Страница 165: ...hardware schematic diagram of the Micro Bit main board the accelerometer coordinate of the Micro Bit are shown in the figure below The following interface shows the decomposition value of acceleration...

Страница 166: ...u ll need to use the CoolTerm serial monitor software to read data You could open CoolTerm software click Options select SerialPort set COM port and put baud rate to 115200 after testing the baud rate...

Страница 167: ...167 www keyestudio com Project 8 Light Brightness Detection...

Страница 168: ...ion In this project we focus on the light detection function of the Micro Bit main board V2 It is achieved by the LED dot matrix And it can be viewed as a photosensor 2 Components Needed Micro bit mai...

Страница 169: ...e route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 8 Light Brightness Detection Project 8 Light Brightness Dete...

Страница 170: ...170 www keyestudio com...

Страница 171: ...171 www keyestudio com Make combinations of these blocks...

Страница 172: ...172 www keyestudio com 5 Test Result Upload the test code to micro bit main board power the board via the USB cable and click Show console Device...

Страница 173: ...dio com When the LED dot matrix is covered by hand the light intensity showed is approximately 0 when the LED dot matrix is exposed to light the light intensity displayed gets stronger with the light...

Страница 174: ...If the current light level is less than or equal to 20 the icon moon will appear on the LED dot matrix If it s bigger than 20 the sun will appear If you re running Windows 7 or 8 instead of Windows 1...

Страница 175: ...oftware click Options select SerialPort set COM port and baud rate to 115200 after testing the baud rate of USB SerialPort communication on Micro Bit main board is 115200 click OK and Connect The Cool...

Страница 176: ...grams easier With a speaker all Micro bit board can be used to create sound related projects But the new version that s the version 2 is able to make the speaker utter giggles greetings and yawning an...

Страница 177: ...via the USB cable 4 Test Code 1 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 9 Speaker Project 9 Code...

Страница 178: ...178 www keyestudio com Make combinations of these blocks...

Страница 179: ...esult 1 After uploading the Test Code 1 to micro bit main board and powering the board via the USB cable the speaker utters sound and the LED dot matrix shows the logo of music 6 Test Code 2 The route...

Страница 180: ...le Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 9 Speaker Project 9 Code 2 hex You can also drag blocks to form code Command blocks can be found on...

Страница 181: ...181 www keyestudio com Make combinations of these blocks...

Страница 182: ...182 www keyestudio com...

Страница 183: ...183 www keyestudio com...

Страница 184: ...184 www keyestudio com...

Страница 185: ...185 www keyestudio com...

Страница 186: ...186 www keyestudio com...

Страница 187: ...187 www keyestudio com The musical score of Ode to Joy is attached below...

Страница 188: ...otations via this link https en wikipedia org wiki Numbered_musical_notation 7 Test Result 2 After uploading the Test Code 2 to micro bit main board and powering the board via the USB cable the speake...

Страница 189: ...onent and function like an extra button It contains a capacitive touch sensor that senses small changes in the electric field when pressed or touched just like your phone or tablet screen do When you...

Страница 190: ...w to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 10 Touch sensitive Logo Project 10 Touch sensitive Logo hex You can also drag blocks to...

Страница 191: ...191 www keyestudio com...

Страница 192: ...192 www keyestudio com Make combinations of these blocks...

Страница 193: ...powering the board via the USB cable the LED dot matrix exhibits the heart pattern when the touch sensitive logo is pressed or touched and displays digit when the logo is released The longer it is pr...

Страница 194: ...sity of sound you can make a noise scale or disco lighting changing with music The microphone is placed on the opposite side of the microphone LED indicator and in proximity with holes that lets sound...

Страница 195: ...load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 11 Microphone Project 11 Code 1 hex You can also drag blocks to form code Command blocks can...

Страница 196: ...splays pattern when you clap and pattern when it is quiet around 6 Test Code 2 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code...

Страница 197: ...197 www keyestudio com...

Страница 198: ...198 www keyestudio com Make combinations of these blocks...

Страница 199: ...199 www keyestudio com 2 Test Result 2 Upload test code to micro bit main board power the board via the USB cable and click Show console Device as shown below...

Страница 200: ...200 www keyestudio com When the sound is louder around the sound value shows in the serial port is bigger as shown below...

Страница 201: ...D dot matrix displays the value of the biggest volume please note that the biggest volume can be reset via the Reset button on the other side of the board while when clapping the LED dot matrix shows...

Страница 202: ...the project we will combine these two components to play music That s the logo will be applied to control the speaker to sing songs 2 Components Needed Micro bit main board 1 USB cable 1 3 Connection...

Страница 203: ...ype Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Project Code Project 12 Play Music Project 12 Play Music hex You can also drag blocks to form code Command blocks can be foun...

Страница 204: ...keyestudio com Make combinations of these blocks 5 Test Results After uploading test code to micro bit main board and powering the board via the USB cable the speaker plays the song Happy Birthday to...

Страница 205: ...ntroduction In the previous projects we have learned about the two programmable buttons button A and B and the LED dot matrix respectively In this one we will combine them to design a game Dodge Bulle...

Страница 206: ...and B can be used to control the movement of the role to dodge bullets It moves to the right when A is pressed and to the left when B is pressed The game is over when G is hit and the game can start o...

Страница 207: ...207 www keyestudio com You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 208: ...208 www keyestudio com...

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Страница 210: ...210 www keyestudio com Make combinations of these blocks...

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Страница 212: ...Result 1 The game begins when the code is uploaded to the main board The bullets G1 and G2 fall off and the role G is controlled by Button A and B to shun them If the role fail to avert the attacks t...

Страница 213: ...and that the game stops when it is hit and the game is over after the display of the scores Like rule1 the game will restart when button A and B pressed together 8 Test Code 2 The route to get test co...

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Страница 217: ...217 www keyestudio com Make combinations of these blocks...

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Страница 219: ...aded to the main board The bullets G1 and G2 fall off and the role G is controlled by Button A and B to shun them 1 score will be tallied for each successful dodging If the role fail to avert the atta...

Страница 220: ...ion With the help of them the board is able to communicate with a variety of Bluetooth devices including smart phones and tablets In this project we mainly concentrate on the Bluetooth wireless commun...

Страница 221: ...main board to your computer via the Micro USB cable 4 Procedures Step 1 For Apple devices enter this link https www microbit org get started user guide ble ios with your computer first and then click...

Страница 222: ...222 www keyestudio com Only Apple devices should follow this step Not needed for Android systems...

Страница 223: ...223 www keyestudio com...

Страница 224: ...r App Store to download the APP micro bit Step 3 Connect your Apple device with Micro Bit main board Firstly turn on the Bluetooth of your Apple device and click icon to open the APP micro bit and sel...

Страница 225: ...225 www keyestudio com Secondly click Pair a new micro bit...

Страница 226: ...s button A and B at the same time do not release them until you are told to and press Reset Power button for a few seconds Release the Reset Power button you will see a password pattern shows on the L...

Страница 227: ...227 www keyestudio com...

Страница 228: ...228 www keyestudio com Set the password pattern on your Apple device as the same pattern showed on the matrix and click Next...

Страница 229: ...229 www keyestudio com Still click Next and a dialog box props up as shown below Then click Pair A few seconds later the match is done and the LED dot matrix displays the pattern...

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Страница 232: ...232 www keyestudio com After the match with Bluetooth write and upload code with the App Click Create Code to enter the programming page and write code Click and the box appears and then select Create...

Страница 233: ...233 www keyestudio com...

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Страница 235: ...235 www keyestudio com Name the project as 1 and click to save it...

Страница 236: ...keyestudio com Click the third item Flash to enter the uploading page The default code program for uploading is the one saved just now and named 1 and then click the other Flash to upload the code pr...

Страница 237: ...237 www keyestudio com...

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Страница 239: ...239 www keyestudio com If the program 1 is uploaded successfully a few seconds later the App will emerge as below and the LED dot matrix of the Micro Bit main board will exhibit a heart pattern...

Страница 240: ...duction of sensors and modules The further lessons are challenging for new starters Note G marked on each sensor and module is the negative pole and connected to G or GND on the sensor shield or contr...

Страница 241: ...r materials silicon selenium germanium etc It features unidirectional conductivity that is the positive voltage is applied to the anode long leg and the cathode short leg of the diode when the voltage...

Страница 242: ...ged if LED is directly connected to the power supply It s essential that a certain resistor must be connected in series in the LED circuit 2 Yellow LED Working Voltage DC 3 3 5V Working current 20mA M...

Страница 243: ...t codes How to load Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 1 LED Blinks Project 1 LED Blinks hex You can also drag blocks to form code C...

Страница 244: ...244 www keyestudio com Make combinations of these blocks Micro bit Shield Yellow LED Module GND G 5V V S 16 S...

Страница 245: ...oad the test code to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show smile expression and a yellow LED will flash with an interval of 100...

Страница 246: ...l that constantly switches between high and low levels to control the analog output In general the input voltages of ports are 0V and 3V What if the 1 5V is required Or a switch among 1V 1 5V and 3V W...

Страница 247: ...The more 0 or 1 output per unit time the more accurate the control In the graphic below the green lines represent a regular time period This duration or period is the inverse of the PWM frequency In...

Страница 248: ...w keyestudio com PWM is applied to light brightness adjustment speed adjustment of motor and sound emitting Parameters of PWM pulse width minimum max Pulse cycle insertion of pulse frequency within 1...

Страница 249: ...namely P5 P6 P7 P8 P9 P11 P12 P13 P14 P15 P16 P19 and P20 In the experiment we connect the port S of yellow LED Module to the port S 16 of the expansion board And P16 can also be used as a PWM interfa...

Страница 250: ...to get test codes How to load Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 2 Breathing LED Project 2 Breathing LED hex You can also drag block...

Страница 251: ...251 www keyestudio com...

Страница 252: ...252 www keyestudio com Make combinations of these blocks Micro bit Expansion Board Yellow LED Module GND G 5V V S 16 S...

Страница 253: ...er dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show a smile expression and LED smoothly changes its brightness from light to dark and back to light continuing to do s...

Страница 254: ...12V high voltage programmable current control portion which effectively ensures that the color of the pixel point The data protocol uses a single line zero code communication method After the pixel p...

Страница 255: ...A Max Power 1W Working Temperat ure 10 50 Source of light SMD 5050 RGB IC Type 4 pcs WS2811 Gray Scale 256 Illuminati ng Angle 180 Illuminating Color Red yellow blue green and white 3 Add NeoPixel Lib...

Страница 256: ...256 www keyestudio com Click the neoPixel library then NeoPixel library is installed You can view it in the blocks list...

Страница 257: ...es How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 3 6812 2x2Full colorRGB Project 3 Code 1 hex You can also drag blocks to form...

Страница 258: ...258 www keyestudio com Make combinations of these blocks Micro bit Expansion Board 6812 2x2 Full Color RGB Module GND G 5V V S 14 S...

Страница 259: ...259 www keyestudio com 5 Test Result 1 Upload the Test Code 1to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch You will view the 6812 RGB...

Страница 260: ...d How to quick download 6 Test Code 2 The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 3 6812 2x2Full...

Страница 261: ...261 www keyestudio com...

Страница 262: ...262 www keyestudio com Make combinations of these blocks...

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Страница 265: ...code 2 to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch You can view four WS2812RGB lights light up like a flowing light How to download How to quick download...

Страница 266: ...ute File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 3 6812 2x2Full colorRGB Project 3 Code 3 hex You can also drag blocks to form code Command blocks can be...

Страница 267: ...267 www keyestudio com...

Страница 268: ...268 www keyestudio com Make combinations of these blocks...

Страница 269: ...the test code 3 to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch Then you will see 5 WS2812RGB lights light up with random colors like a flowing light How to d...

Страница 270: ...ent of human body Conventional pyroelectric infrared sensors are much more bigger with complex circuit and lower reliability Yet this new pyroelectric infrared motion sensor is more practical It integ...

Страница 271: ...Current 50MA Static Current 50uA Control Port Digital output high level is 3 3V low level is 0V Control Signals Digital signal 1 0 Working Temperature 10 50 Max detection distance 4m Sensing Angle 100...

Страница 272: ...ng part is parallel to the ground the distance is the best 3 In the test covering the sensor with white lens can sense the distance precisely 4 The distance is best at 25 and the detection distance va...

Страница 273: ...load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 4 PIR Motion Sensor Project 4 PIR Motion Sensor hex You can also drag blocks to form co...

Страница 274: ...274 www keyestudio com...

Страница 275: ...ad the test code to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show a smile image Then click Show console device How to download How to q...

Страница 276: ...be on As shown below If your computer system is Windows7 8 instead of Windows 10 the device can t be paired in Google Chrome as a result the digital and analog signals can t be read Here we need CoolT...

Страница 277: ...277 www keyestudio com...

Страница 278: ...method In this project we combine it with a yellow LED to control LED s brightness 2 Test Code The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutori...

Страница 279: ...279 www keyestudio com...

Страница 280: ...280 www keyestudio com Make combinations of these blocks Micro bit Expansion Board PIR Motion Sensor Micro bit Expansion Board Yellow LED Module GND G GND G 5V V 5V V S 15 S S 16 S...

Страница 281: ...the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show a smile image When the PIR motion sensor detects people the yellow LED will be on otherw...

Страница 282: ...al sent by MCU or receiver and produces a reference signal with a period of 20ms and width of 1 5ms then compares the acquired DC bias voltage to the voltage of the potentiometer and obtain the voltag...

Страница 283: ...ted between 1ms 2ms but in fact it s between 0 5ms 2 5ms The width corresponds the rotation angle from 0 to 180 But note that for different brand motors the same signal may have different rotation ang...

Страница 284: ...oad speed 0 12 0 01 sec 60 DC 4 8V 0 1 0 01 sec 60 DC 6V No load current 200 20mA DC 4 8V 220 20mA DC 6V Stop torque 1 3 0 01kg cm DC 4 8V 1 5 0 1kg cm DC 6V Stop current 850mA DC 4 8V 1000mA DC 6V St...

Страница 285: ...load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 6 Adjust angles of servo Project 6 Adjust angles of servo hex You can also drag blocks...

Страница 286: ...286 www keyestudio com Make combinations of these blocks Micro bit Expansion Board Servo GND Brown 5V Red S 8 Orange...

Страница 287: ...load the test code to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show smile expression the servo will rotate 0 45 90 135 180 0 in loop wa...

Страница 288: ...art uses the PMOS and NMOS power tubes of low on resistance In addition the HR1124S chip has the low standby and static current This motor is compatible with all kinds of MCU control boards It comes w...

Страница 289: ...289 www keyestudio com Working Voltage 3 3 5V DC Max Current 200mA DC5V Max Power 1W Control port Dual digital port digital input Working Temperature 10 C 50 C Environmental Attribute ROHS...

Страница 290: ...te to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 7 130 Motor Project 7 Code 1 hex You can also drag blocks t...

Страница 291: ...291 www keyestudio com Make combinations of these blocks Micro bit Expansion Board Motor GND G 5V V S 13 IN S 12 IN...

Страница 292: ...292 www keyestudio com Code Explanation IN digital port P12 IN digital port P13 Fan high level 1 low level 0 Rotate clockwise...

Страница 293: ...tP12 IN digital port P13 fan low level 0 high level 1 Rotate anticlockwise IN digital portP12 IN digital port P13 fan low level 0 low level 0 Not rotating IN digital portP12 IN digital port P13 fan hi...

Страница 294: ...2 PWM Speed control The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 7 130 Motor Project 7 Code 2 hex...

Страница 295: ...295 www keyestudio com Make combinations of these blocks...

Страница 296: ...n IN digital portP12 IN digital portP13 fan high level 1 PWM 600 Rotate clockwise IN digital portP12 IN digital portP13 Fan low level 0 PWM 400 Rotate anticlockwise IN digital portP12 IN digital portP...

Страница 297: ...n power dial the DIP switch to ON and press 1 on the rocket switch The fan will rotate clockwise for 5s stop 1 rotate anticlockwise for 5s and stop for 1s in loop way How to download How to quick down...

Страница 298: ...and a charging port for solar panels which can supply power for an external lithium battery In addition this module has a boost module which can increase the voltage of batteries to 6 6V The DIP switc...

Страница 299: ...www keyestudio com 3 Schematic Diagram Max Charging Current 800mA Output Port 3 P 2 54mm Pins Input Voltage 6 6V Max Output Current 800mA Batteries Single cell Lithium Battery Environmental Attribute...

Страница 300: ...300 www keyestudio com 4 Features SOLAR4 8 6 0V the input port of power is connected to polar panels The solar energy is converted into electric energy via solar panels...

Страница 301: ...ttery holder rechargeable batteries and saves the electric energy into batteries This is the switch Slid to ON end then the external lithium battery will be connected supplying to the expansion board...

Страница 302: ...anel and an LED we provide together as shown below Disconnect the power after a while you will see the LED light up Project 9 1602 LCD 1 Project Introduction With I2C communication module this is a di...

Страница 303: ...ours is built with Arduino IIC I2C interface saving 5 IO ports Alternatively the module comes with 4 positioning holes with a diameter of 3mm which is convenient for you to fix on other devices Notic...

Страница 304: ...ication SCL a pin interfaced with SCL or A5 used for IIC communication Backlight Adjustable contrast 3 Add I2C LCD 1602 Library Set code by the library and click Extensions to add the library file Tap...

Страница 305: ...305 www keyestudio com In addition the I2C LCD 1602 library is included in the IoT_keyestudio You can check the I2C LCD 1602 library in the block list...

Страница 306: ...t codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 9 1602 LCD Project 9 1602 LCD hex You can also drag blocks to form code...

Страница 307: ...307 www keyestudio com...

Страница 308: ...308 www keyestudio com Make combinations of these blocks Micro bit Expansion Board I2C 1602 LCD Module GND GND 5V 5V SDA SDA SCL SCL...

Страница 309: ...The micro bit board will show a smile image Then rotate the knob of the potentiometer at the back of the LCD module you will see Keyestudio at one row and numbers at the second row In addition the nu...

Страница 310: ...e contact coverage increases the output voltage will gradually rise It can detect water vapor in the air as well The steam sensor can be used as a rain water detector and level switch When the humidit...

Страница 311: ...2 Parameters Working Voltage DC 3 3 5V Working Temperature Range 10 70 Max Working Current 5uA DC5V when the two pins of the steam sensor are in short circuit Control Port Analog output 3 Test Code T...

Страница 312: ...oute File Name Hex file KS4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 10 Steam Sensor Project 10 Steam Sensor hex You can also drag blocks to form code Command blocks can be...

Страница 313: ...313 www keyestudio com...

Страница 314: ...blocks 4 Test Results Upload the test code and plug in power with micro USB cable Then the micro bit will show At same time click the Show console Device How to download How to quick download Micro b...

Страница 315: ...yestudio com The more the immersed area of the module the larger the analog value As shown below The serial monitor will show the output data and the steam sensor will read the analog signals at the s...

Страница 316: ...and analog signals can t be read Here we need CoolTerm software to read data Open CoolTerm click Options to select SerialPort Set COM port and 115200 baud rate the baud rate of USB serial communicati...

Страница 317: ...7 www keyestudio com Project 11 Rains Alarm 1 Project Introduction Steam Sensor is a wide range of applications such as raining alarm automotive automatic scraping system intelligent lighting system a...

Страница 318: ...ombine Steam Sensor Micro bit and yellow LEDs making a simple rain alarm 2 Test Code The route to get test codes How to load File Type Route File Name Hex file KS4027 folder Makecode Tutorial Makecode...

Страница 319: ...319 www keyestudio com...

Страница 320: ...320 www keyestudio com Make combinations of these blocks Micro bit Expansion Board Steam Sensor Micro bit Expansion Board Yellow LED Module GND G GND G 3V3 V 5V V S 0 S S 16 S...

Страница 321: ...estudio com 3 Test Results Upload the test code to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show smile expression When the detected ana...

Страница 322: ...as alarms and portable gas detection instruments Also it is suitable for the detection of liquefied gas benzene alkane alcohol hydrogen etc The MQ 2 smoke sensor can be accurately a multi gas detector...

Страница 323: ...oxygen reducing the electron density in the semiconductor thereby increasing its resistance value When in contact with flammable gas in the air and smog and the potential barrier at the grain boundary...

Страница 324: ...3 5V Working Current 160mA DC5V Working Temperatu re 0 C 40 C Control Port Digital and analog output Detection concentrat ion 300 10000ppm combustible gas Rake Ratio 0 6 R3000ppm R100 0ppm C3H8 Sensi...

Страница 325: ...signal light will be on 4 The analog output is 0 5V voltage The higher the concentration the higher the voltage 5 a good sensitivity to liquefied gas natural gas and urban gas 6 Have long term life ex...

Страница 326: ...326 www keyestudio com 12 Analog Gas MQ 2 Sensor You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 327: ...327 www keyestudio com...

Страница 328: ...1 D 4 Test Results Upload the test code to the micro bit plug in power and dial the DIP switch to ON Then the micro bit will show smile expression and a green indicator will be on You can adjust the...

Страница 329: ...meter and click Show Console Device How to download How to quick download The serial monitor will show 1 if the sensor doesn t detect any gas however if you make the firelighter close to it number 0 w...

Страница 330: ...Here we need CoolTerm software to read data Open CoolTerm click Options to select SerialPort Set COM port and 115200 baud rate the baud rate of USB serial communication of micro bit V2 is 115200 throu...

Страница 331: ...This MQ 2 gas sensor is used for household gas leak alarms industrial combustible gas alarms and portable gas detection instruments And it is suitable for the detection of liquefied gas benzene alkane...

Страница 332: ...al gas liquefied petroleum gas and other smoke especially to alkanes smoke We will make a gas leakage detector with a MQ 2 gas sensor a yellow LED and a 1602 LCD 2 Add the 1602 LCD library Library lin...

Страница 333: ...333 www keyestudio com You can also drag blocks to form code Command blocks can be found on the right as shown below...

Страница 334: ...udio com Make combinations of these blocks Micro bit Expansion Board Analog Gas MQ 2 Sensor Micro bit Expansion Board Yellow LED Module Micro bit Expansion Board 1602 LCD Module GND G GND G GND GND 5V...

Страница 335: ...335 www keyestudio com S 1 D S 16 S SDA SDA SCL SCL 4 Test Results Upload the test code to the micro bit plug in power dial the DIP switch to...

Страница 336: ...sound and LED will flash How to download How to quick download Project 14 DHT11 Temperature and Humidity Sensor 1 Project Introduction This DHT11 temperature and humidity sensor is a composite sensor...

Страница 337: ...emperature measuring device 2 Parameters Working Voltage 3 3V 5V DC Max Working Current 50mA Max Power 0 25W Control Port Digital two way single bus Temperature Range 0 50 2 Humidity Range 20 90 RH 5...

Страница 338: ...ature high bit is the temperature integer part of the data the temperature low bit is the temperature fractional part of the data And the temperature low bit8 is 1 which indicates the negative tempera...

Страница 339: ...nical Data Sheet T ranslated Version 1143054 pdf 4 Add the DHT11 library Set code by the library and click Extensions to add the library file Copy the link https github com keyestudio2019 ks_IoT in th...

Страница 340: ...340 www keyestudio com You can find it in the blocks list 5 Test Code The route to get test codes How to load...

Страница 341: ...S4027 folder Makecode Tutorial Makecode Code Expansion Projects Project 14 DHT11 Temperature and Humidity Sensor Project 14 DHT11 Temperature and Humidity Sensor hex You can also drag blocks to form c...

Страница 342: ...342 www keyestudio com...

Страница 343: ...e blocks Micro bit Expansion Board DHT11 Temperature and Humidity Sensor GND G 5V V S 2 S 6 Test Results Upload the test code to the micro bit plug in power dial the DIP switch to ON and press 1 on th...

Страница 344: ...344 www keyestudio com image Then click Show console Device How to download How to quick download The detected temperature and humidity value is shown as below...

Страница 345: ...ital and analog signals can t be read Here we need CoolTerm software to read data Open CoolTerm click Options to select SerialPort Set COM port and 115200 baud rate the baud rate of USB serial communi...

Страница 346: ...346 www keyestudio com as shown below...

Страница 347: ...th it and a 1602 LCD 2 Add the 1602 LCD and DHT11 library The link to add libraries https github com keyestudio2019 ks_IoT You can refer to project 9 and 14 3 Test Code The route to get test codes How...

Страница 348: ...348 www keyestudio com Command blocks can be found on the right as shown below...

Страница 349: ...ww keyestudio com Make combinations of these blocks Micro bit Expansion Board DHT11 Temperature and Humidity Sensor Micro bit Expansion Board 1602 LCD Module GND G GND GND 5V V 5V 5V S 2 S SDA SDA SCL...

Страница 350: ...code to the micro bit plug in power dial the DIP switch to ON and press 1 on the rocket switch The micro bit will show smile image The 1602 LCD will show the temperature and humidity value in the curr...

Страница 351: ...The final lesson is the combination of all modules and sensors It is an analog smart home 2 Preparation A micro bit and the smart home model Interface the micro bit with a computer with a micro USB c...

Страница 352: ...ou are close to the PIR motion sensor the yellow LED will be on otherwise the yellow LED will be off When dropping water onto the steam sensor and analog signal is more than 300 the window will be clo...

Страница 353: ...2LCD will display Successful and Open the door the 6812 2x2 RGB will show purple color However if the password is wrong error will pop up on the LCD module and show Enter password Touch the logo area...

Страница 354: ...ect 17 BT controlled LED 1 Project Introduction We control LED on and off via app 2 Preparation Install App Android system Search on Google play or install the app package we provide in the Android AP...

Страница 355: ...355 www keyestudio com Add the BT library file as shown below 3 Test Code...

Страница 356: ...dio com Note after finishing code you need to enable No paring Required Anyone can connect via Bluetooth 4 Test Results Upload code to the micro bit open the switch of the smart home enable the App an...

Страница 357: ...357 www keyestudio com Search the Bluetooth name of micro bit board After connecting well click LED icon...

Страница 358: ...com Then you will see LED on If you click this icon again LED will be off Project 18 Smart Home 1 Project Introduction In this section we will control the smart home via Bluetooth 2 Preparation Downl...

Страница 359: ...359 www keyestudio com Add the Bluetooth library file Add the libraries https github com keyestudio2019 ks_IoT 3 Test Code Seen in the folder...

Страница 360: ...n the micro bit board Pressing A and B respectively means and Pressing A and B simultaneously indicates confirm The 5 5 LED lights will show picture and the I2C1602LCD will display Successful and Open...

Страница 361: ...361 www keyestudio com 9 Resources https fs keyestudio com KS4027 4028...

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