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Preface

About SunFounder

SunFounder is a technology company focused on Raspberry Pi and Arduino open source

community development. Committed to the promotion of open source culture, we strive to
bring the fun of electronics making to people all around the world and enable everyone to
be a maker.

Our products include learning kits, development boards, robots, sensor modules and

development tools. In addition to high quality products, SunFounder also offers video
tutorials to help you make your own project. If you have interest in open source or making
something cool, welcome to join us!

About This Kit

This cute learning kit focuses on the popular open source platform Arduino. You can learn

the knowledge of the Arduino servo and ultrasonic ranging module by applying this kit.

In this book, we will show you how to build the biped robot via description, illustrations of

physical components, in both hardware and software respects. You may visit our website

www.sunfounder.com

to download the related code and view the user manual on

LEARN

-> Get Tutorials

and watch related videos under

VIDEO

.

Free Support

If you have any

TECHNICAL questions

, add a topic under

FORUM

section on our

website and we'll reply as soon as possible.

For

NON-TECH questions

like order and shipment issues, please

send an email to

[email protected]

. You're also welcomed to share your projects on FORUM.

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Содержание Sloth Learning Kit

Страница 1: ...bout This Kit This cute learning kit focuses on the popular open source platform Arduino You can learn the knowledge of the Arduino servo and ultrasonic ranging module by applying this kit In this book we will show you how to build the biped robot via description illustrations of physical components in both hardware and software respects You may visit our website www sunfounder com to download the...

Страница 2: ...IDE 5 Install the Driver 6 Add Libraries 6 Test for Servos and Ultrasonic Module 7 i Servo Test 7 ii Ultrasonic Test 11 Assembly 13 i Head Assembly 13 ii Electrical Module Assembly 14 iii Servo Assembly 15 iv Servo INSTALL Test 20 v Foot Assembly 21 vi Battery Assembly 23 vii Servo CALIBRATION Test 24 viii Ultrasonic Connecting 27 ix Servo RUN Test 28 x Wire Arrangement 29 Q A 30 ...

Страница 3: ...Summary 32 Copyright Notice 33 ...

Страница 4: ...1 Components i Structural Plate ii Mechanical Fasteners Parts Name Qty ...

Страница 5: ...Screw 12 M3 5 Screw 18 M3 8 Countersunk Screw 8 M1 4 Nut 6 M2 Nut 12 M3 Self locking Nut 8 M3 8 Bi pass Copper Standoff 4 M3 25 Bi pass Copper Standoff 4 iii Electrical Components Parts Name Qty SF006C Servo 4 Ultrasonic Module 1 SunFounder Nano Board 1 ...

Страница 6: ... Battery Not Included Parts Name Qty 9V battery 1 Note Please check the above list and structural plate drawings against the product you received to check for missing components If the above two situations occur please take pictures of all the components you have received and inform us of the missing parts and send E mail to service sunfounder com ...

Страница 7: ... servo One 9V chargeable lithium batteries are to supply the bot when the SunFounder Nano is used as the control board compatible with the Arduino Nano A servo control board connects with the batteries servos SunFounder Nano and the HC SR04 ultrasonic ranging module Sloth can move forward and detect the range to make a turn when encountering an obstacle In addition when learning to program you can...

Страница 8: ...download the Arduino IDE upload the sketches i e the code files to the board and then you can see experimental phenomena For more information refer to http www arduino cc Arduino Board SunFounder Compatible Arduino senses the environment by receiving inputs from many sensors and affects its surroundings by controlling lights motors and other actuators In this kit SunFounder Nano board is used Inst...

Страница 9: ...all the Arduino Software After installing you will see Arduino icon on your desk and double click to open it Install the Driver If the driver is not installed the Nano board will not be able to be recognized by your computer Therefore before using it please install appropriate driver For Windows users run PL2303_Prolific_DriverInstaller_v1180B in the folder Driver For Mac users refer to the folder...

Страница 10: ...our libraries indicating the library has been included successfully Test for Servos and Ultrasonic Module Before assembling you need to test the servos and the ultrasonic module according to the following steps i Servo Test 1 Physical Test ...

Страница 11: ...e servo does not work properly we believe that the servo has been damaged 2 Software Test Insert SunFounder Nano board into the Servo Control Board Note The USB port should be at the same side with blue power supply terminal Connect the Nano board to computer with a USB cable you can see a notification in system tray Then open the program Test_robot ino and go to line 21 In the code four servos ar...

Страница 12: ...e to the expansion board Connect four servos to pin 9 to pin 12 of the expansion board Note The yellow red and brown wires connect to Signal VCC and GND on the expansion board respectively Select the right board to Nano board in IDE ...

Страница 13: ...10 Then select the right port and upload the sketch After waiting for a few seconds the download process is successful The following window will prompt Done uploading ...

Страница 14: ...o can work Then press the power button again to turn it off Keep the Test_robot ino file open and ii Ultrasionic Test still needs to use this file in the next step ii Ultrasonic Test Connect the ultrasonic connecting cable to the ultrasonic module it has an anti reversing port Here the 4 pins are marked with labels on the modules ...

Страница 15: ...u can see that TRIGGER_PIN is defined as 5 and ECHO_PIN is defined as 4 And connect the pin TRIG to pin 4 of the servo control board ECHO to pin 3 VCC to V and GND to G Go to Line 16 disable the SERVO and activate the ULTRASONIC ...

Страница 16: ...le and make the two ultrasonic eyes facing an obstacle move the robot back and forth and observe the data shown on serial monitor If the data changes with the robot s moving it proves the ultrasonic module is good At last turn it off and unwire the battery Assembly i Head Assembly Insert the ultrasonic module into No 1 board and secure it with M1 4 8 screws and M1 4 nuts ...

Страница 17: ... M3 8 two way hexagonal copper post on No 1 board ii Electrical Module Assembly Use a M3 5mm screw to mount the previously installed circuit board on No 1 board Use M3 5 screws to fix M3 25 Bi pass Copper Standoff under the No 1 board ...

Страница 18: ...uts to mount the servo on the corresponding position on the No 2 board Note the direction of the servo installation Secure the No 1 and No 2 boards with M3 5 screws Note that the side of the servo shaft should be mounted on the side of the USB port ...

Страница 19: ...16 Use two M1 5 5 self tapping screws to fix the 2 arm rocker arm to the No 4 board and use the same method to install another No 4 board ...

Страница 20: ...holes on the 4th and 5th boards with M3 8 Countersunk screws Use the same method to secure the other round hole on the 4th and 5th boards as shown Use two M1 5 5 self tapping screws to secure the 1 arm rocker arm on the No 4 board ...

Страница 21: ...18 nd M3 self locking nuts in the following figure Install another No 4 board in the same way ...

Страница 22: ...ith the countersunk side down and secure the No 6 board to the module right leg described above with the M3 8 countersunk screw and the M3 selflocking nut The same method can be used to secure the No 7 and the module left leg ...

Страница 23: ...hen connect the lower right servo the upper left one and the lower left servo to pin 10 11 and 12 respectively in the same way Connect the Nano board and the computer with a USB cable Open the program simple_robot ino and upload the program to the board Now it s in install process Then power on the robot keep the power on and the servo connect to the board ...

Страница 24: ...est screws in the packaged with servo Try to keep the edges of the 4th board and the servo parallel to each other They need to be reinstalled if not parallel to each other Parallel Put a servo shaft on No 3 board and then secure the lower left servo pin 12 to the No 5 board with M2 8 screws and M2 nuts Note that the servo shaft should be close to the inside of No 7 board ...

Страница 25: ...22 The lower right servo pin 10 is installed in the same way Insert the 1 arm rocker arm into the two servos and secure them with the matching screws of the servo The effect chart is as follows ...

Страница 26: ...tach one side of velcro tape to the bottom of the No 1 board and the other side to the battery Insert the battery into the battery cable and plug the other end into the expansion board Lastly paste the battery on the No 1 board ...

Страница 27: ...ps for calibration 1 If the right leg is toe out you need to decrease the upper right servo s angle if it is toe in you need to increase the angle 2 The calibration method for the left leg works the opposite way for right leg 3 If the right foot s sole faces outward you need to decrease the lower right servo s angle if its sole faces inward you need to increase the angle 4 The calibration method f...

Страница 28: ...ht leg is toe out left leg is toe out right foot s sole faces outward left foot s sole faves outward Then go back to Line 15 Thus we can calibrate as follows 1 Decrease the upper right servo s angle Change 95 degrees to 90 array_cal 0 is the upper right servo s rotation angle 2 Increase the upper left servo s angle Change 115 degrees to 120 array_cal 2 is the upper left servo s rotation angle 3 De...

Страница 29: ...wer left servo s rotation angle i e In line 15 change code to array_cal 4 90 90 120 100 Then click Upload The edge of upper left plate and upper plate are parallel with each other but upper right is not parallel to the upper one the deviation angles of lower left and lower right servos are decreased Change code in line 15 to array_cal 4 80 80 120 110 Then click Upload ...

Страница 30: ...time if there is a little deviation Since the servo angles on legs and feet differ the final calibrated angles array_cal 4 will be different too It will take multiple times of calibration you should adjust in patience viii Ultrasonic Connecting Plug one end of the ultrasonic connecting cable into the ultrasonic module and the other to the servo control board ...

Страница 31: ...IG of the ultrasonic to pin 4 of the board ECHO to pin 3 VCC to VCC and GND to GND ix Servo RUN Test Go to Line 39 again disable the CALIBRATION line Activate the operating programe run and burn the program to the board ...

Страница 32: ...nd press the power button on the servo control board You will see the robot moving forward When encountering an obstacle it will make a turn and then go forward again x Wire Arrangement Twine the servo wire and 4 Pin anti reverse cable on the No 1 board ...

Страница 33: ...Sloth is in lower power rebooting will happen please charge the battery in time 2 It could be the servos are lacking for power Open the program and go to Line 12 13 vel is the servos rotating speed in initialization or moving forward vel_Back is the servos rotating speed in moving backward delay_Forward delay_Back are the delays between two moving forward loops and moving backward loops a If reboo...

Страница 34: ...k to 8 and increase delay_Backward to 1500 You can adjust to a proper value as you want Then click Upload Q3 Sloth walks too slowly when it moves forward How to solve this A3 Sloth s default speed is middle speed the related sketch is vel mid delay_Forward mid 20 750 You can change the speed value as shown below to adjust the walking speed ...

Страница 35: ... the value DO NOT adjust a high speed for walking backward to avoid possible falling down Q5 How to make the sloth more stable in walking A5 Cut to get two paper cushion for the robot feet and stick them on the Sloth soles to maintain enough friction for a stable walking Summary In this manual having learned the related components for building the robot kit you ve gone through the assembly of the ...

Страница 36: ...uding but not limited to texts images and code in this manual are owned by the SunFounder Company You should only use it for personal study investigation enjoyment or other non commercial or nonprofit purposes under the related regulations and copyrights laws without infringing the legal rights of the author and relevant right holders For any individual or organization that uses these for commerci...

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