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The changing weather is so annoying, I even got a cold because of it! No, I have to think of a
way to remind myself of changes in the weather at all times. I have to pay attention to keep
warm and never catch a cold again. Less gossip, let’s make a weather station to ensure we can
obtain temperature and humidity anytime and anywhere to solve this problem!

Experiment 12 – Weather station

Instruction

Learn how Temperature&Humidity sensor work and use it to make a weather station.
Learn how to add an extension package.
Learn how to use two onboard buttons of micro:bit.

Micro:bit x1
Crowtail-Base shield for Micro:bit x1
Crowtail-Temperature&Humidity Sensor x1

Crowtail-Cable x1
USB cable x1

Target

Required Parts

This module can help you detect the temperature and
humidity of the environment of your house. The
module contains a DHT11 temperature & humidity
sensor that is a complex sensor with a calibrated digital
signal out. It uses digital module acquisition technology
and temperature&humidity sensor technology. The
sensor consists of a resistance type moisture element
and an NTC temperature measuring element. Because of the single-wire serial interface, it is
easy to use the module.

Connect Crowtail-Temperature&Humidity Sensor to P0 port of Crowtail-Base shield for
Micro:bit. The hardware connections are as follows:

Hardware learning and connection

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Содержание Crowtail Starter Kit

Страница 1: ...User Guide V2 0 2020 02 www elecrow com 2020 ELECROW All Rights Reserved C Crowtail Starter Kit for Micro bit...

Страница 2: ......

Страница 3: ...Experiment 10 Automatic control Experiment 11 Automatic door Experiment 12 Weather station Experiment 13 Ultrasonic ranging smart door Experiment 14 Make an accurate clock Experiment 15 Distance displ...

Страница 4: ...xperiments so you can learn how the electric modules work and use it to build innovative works and plan out unique projects In addition the kit also focuses on stimulating children s creativity so tha...

Страница 5: ...as Blocks JavaScript Python Scratch and etc This guide will focus on Makecode a block or JavaScript based environment developed by Microsoft LED Array The micro bit has 25 individually programmable L...

Страница 6: ...Temperature Sensor The Microcontroller doubles as a temperature sensor The temperature sensor transforms the temperature in the ambient environment into digital signals that can be read by the micro...

Страница 7: ...nother device before using the Bluetooth antenna Radio The radio feature allows you to communicate wirelessly between two or more micro bits Quick start Step 1 Connect it Connect the micro bit with yo...

Страница 8: ...ons into this area to form your program Drag and drop some blocks and try your program out in the Simulator in the Makecode Editor the example below shows you how to program a smiley face Step 2 1 Sel...

Страница 9: ...to make sure your micro bit is powered up and within easy reach of the phone or tablet while running the App There are two types of APPs available for micro bit which are based on Microsoft Makecode l...

Страница 10: ...The Crowtail Base shield for Micro bit is the core part of this kit it acts as a bridge between Micro bit board and Crowtail modules You can plug and then play with Crowtail modules and micro bit thro...

Страница 11: ...ight Here we will learn how to use the LED and control it s on and off Learn how the LED work and use it to make a blinking light Learn how to run the code forever Learn how to output logic high and l...

Страница 12: ...also use Boolean states of true and false but we will use 0 and 1 as our standard throughout this guide Pause If you were to just turn pins on and off with the digital write block without a pause the...

Страница 13: ...ts of Crowtail Base shield for Micro bit The hardware connections are as follows Congratulations you have mastered the method of controlling the LED on and off But just like the lights at home can we...

Страница 14: ...if the statement is true the value is digital read from P0 port equal to 1 then turn on the LED on pin 1 else turn off the LED on P1 Download the program to micro bit to see what happens Do you like m...

Страница 15: ...ctions are as follows Programming and note Learn how the buzzer work and use it to play songs Learn how to run the code once at the beginning of the program Micro bit x1 Crowtail Base shield for Micro...

Страница 16: ...nt to keep the buttons secret There are so many dangerous areas that we can t touch with our hands directly otherwise we may be in danger For example we can t touch the power socket with our hands bec...

Страница 17: ...bee noise to prevent touching The buzzer will stop sounding until you stop touching Download the program to micro bit to see what happens If you put your hand on the touch sensor the buzzer will make...

Страница 18: ...ction via 4 pin sensor cable and Micro bit sensor expansion board connector Hardware learning and connection Learn how the collision sensor work and use it to make a collision detector with buzzer Mic...

Страница 19: ...r on P0 and P2 else turn off the LED and buzzer on P0 and P2 Digital Write There are two modules we need to use the digital write block to set they output 1 logic HIGH signal or 0 logic LOW signal Her...

Страница 20: ...bit x1 Crowtail Light Sensor x1 Crowtail LED Green x1 Crowtail Cable x2 USB cable x1 Target Required Parts The Light sensor module uses the GL5516 photoresistor to detect the light intensity of the e...

Страница 21: ...larger than this value when it is less than this value it indicates that the brightness is dark and we need to turn on the LED Download the program to micro bit to see what happens The LED will not l...

Страница 22: ...1 Crowtail LED Yellow x1 Crowtail Buzzer x1 Crowtail Cable x3 USB cable x1 Target Required Parts This Moisture sensor can be used to detect the moisture of soil and thus to monitor if the plants in yo...

Страница 23: ...else if analog read from P0 is more than 500 is true then it will execute the code blocks inside of the else if Else analog read from P0 is larger than 50 and less than 500 it will execute the else bl...

Страница 24: ...Required Parts Crowtail PIR Motion Sensor Passive Infrared Sensor can detect infrared signals caused by motion If the PIR sensor notices the infrared energy the motion detector will be triggered and t...

Страница 25: ...o bit s matrix LEDs when it runs Here we clear matrix LEDs when PIR motion sensor does not detect the movement of Infrared energy Download the program to micro bit to see what happens Wave your hand i...

Страница 26: ...e brightness of the LED Learn how to create variables to store value Learn how to remap numbers from one range to another Micro bit x1 Crowtail Base shield for Micro bit x1 Crowtail Linear Potentiomet...

Страница 27: ...a certain propor tion Here we need to map the potentiometerValue value between 0 and 1023 to value between 0 and 255 and write it to P1 port For example if the value of potentiometerVal ue is 240 the...

Страница 28: ...ule in some actual applications such as home automation and sometimes you need to control large current such as the air conditioning water heater That is what this Large Current Relay Module can help...

Страница 29: ...hen the switch is detected to open we use the digital write module to turn on the relay 1 and then the battery box power can flow through the DC motor so that the battery box and the DC motor could fo...

Страница 30: ...cost servo for all your mechatronic needs It comes with a 4 pin power and control cable mounting hardware Servo is used in many intelligent situations such as automatic doors robots aerial models etc...

Страница 31: ...ft to 180 degrees and 0 degrees these two specified angles Pause After we moved the servo s shaft to 180 degrees opening the door we used a pause block to pause the code so that the door would not clo...

Страница 32: ...Crowtail Base shield for Micro bit x1 Crowtail Temperature Humidity Sensor x1 Crowtail Cable x1 USB cable x1 Target Required Parts This module can help you detect the temperature and humidity of the e...

Страница 33: ...pin Use this block in the extension package we added to set the pin of Crowtail Temperature Humidity Sensor and get data from it Available data includes Fahrenheit Celsius and Humidity In here we get...

Страница 34: ...quired Parts This HC SR04 has stable performance and high ranging accuracy The process of ultrasonic ranging Ultrasonic pulses travel outward until they encounter an object The object causes the wave...

Страница 35: ...r Micro bit The hardware connections are as follows Programming and note Just as Crowtail Temperature Humidity Sensor we need to add the extension package for Crowtail Ultrasonic Ranging Sensor before...

Страница 36: ...se you forgot to set the alarm clock This is really embarrassing Let s make an alarm clock with a RTC module together today and say goodbye to being late Experiment 14 Make an accurate clock Instructi...

Страница 37: ...days including corrections for leap year Besides this module is really low power consumption it can serve you more than a month with a CR1220 battery Connect Crowtail RTC and Crowtail Buzzer to I2C an...

Страница 38: ...e if statement will not run Download the program to micro bit to see what happens It takes too much time to scroll the messages on the micro bit s matrix LEDs which makes viewing very inconvenient But...

Страница 39: ...ce that detected by the ultrasonic ranging sensor Learn how to show number and string on OLED Micro bit x1 Crowtail Base shield for Micro bit x1 Crowtail Ultrasonic Ranging Sensor x1 Crowtail OLED x1...

Страница 40: ...s block is used to clears the OLED display In this case every time we cycle we will display on a clear OLED screen Show without newline number Displays a number on the OLED module without a newline No...

Страница 41: ...icro bit which allows you to communicate between two or more micro bits Experiment 16 Wireless communication Instruction Learn how radio work on micro bit and use it to communicate between 2 micro bit...

Страница 42: ...nother micro bit into Crowtail Base shield for Micro bit named bit2 if you don t have two Crowtail Base shield for Micro bit you don t have to plug this micro bit into Crowtail Base shield for Micro b...

Страница 43: ...s packet did not contain a number If the number received by bit1 receiv er_code is 3 the code inside the if statement of bit1 will be run If the number received by bit2 send_code is 4 the code inside...

Страница 44: ...w to detect the keys pressed by the infrared remote control Target Micro bit x1 Crowtail Base shield for Micro bit x1 Crowtail IR Receiver x1 Crowtail LED Green x1 Crowtail 9G Servo x1 Crowtail Cable...

Страница 45: ...to micro bit to see what happens Step2 Add the package to your Makecode and you can see it When you press the 1 key on the controller the LED will turn on when you press the 2 key the LED will turn o...

Страница 46: ...es That is a very interesting thing so let s do a similar project in this lesson put it in a box and make a fun and smart music box Experiment 18 Smart music box Instruction Connect Crowtail Ultrasoni...

Страница 47: ...ield and the other end of the jumper to the COM port of the Relay Connect the two wires of the motor to the NO port of the relay and the GND port of the Base Shield Note that the power consumed by the...

Страница 48: ...ck detects and runs the code we want to run when the button is pressed When the key is pressed turn the relay on when the key is pressed turn the relay off Download the program to micro bit and see wh...

Страница 49: ...aking tilting and free fall Micro bit x2 Crowtail Base shield for Micro bit x2 Crowtail Touch Sensor x1 Crowtail Switch x1 Crowtail LED Yellow x1 Crowtail Buzzer x1 Crowtail 9G Servo x1 Crowtail Cable...

Страница 50: ...or example shaking the micro bit In send_code when bit1 logo down we send 1 when bit1 tilts to the left we send 2 when bit1 tilts to the right we send 3 Show leds This block is to shows a picture on t...

Страница 51: ...shaft rotates to 180 degrees and a right picture is displayed on the micro bit matrix LEDs 5 If the number received is 4 play a melody in background 6 If the number received is 5 turn LED on 7 If the...

Страница 52: ...s The game we are going to make is one of the most popular games pick up beans Experiment 21 Pick up beans Target Connect Crowtail Buzzer and Crowtail LED to P0 and P1 ports of Crowtail Base shield fo...

Страница 53: ...the score Download the program to micro bit to see what happens 1 Set the position of the player sprite and bean sprite and turn LED off 2 Change the y axis position of the bean sprite 3 If player spr...

Страница 54: ...t up to indicate a score a new bean will spawn on top of the matrix LED and start falling otherwise the game ends and the score is displayed Result 51 You have just finished your invention journey wit...

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