Self-Balancing Robot using Raspberry Pi 2

I’m working on my first Raspberry Pi 2 Model B project just to test the latest hardware. I will start baby step for this project, learning the Raspberry Pi robotics and beyond I hope.

Here are the parts I bought to start my Raspberry Pi Robot.

• Raspberry Pi 2 Model B with 8GB Micro SD card preloaded with NOOBS. $39.99 at http://on.king.net/raspberrypi
• Tontec® 3.5 Inches Touch Screen for Raspberry Pi Display TFT Monitor 480×320 LCD Touchscreen Kit with Transparent Case for Raspberry Pi 2 Model B and.  This is optional but I bought anyway so I have to test the touch screen for Raspberry Pi, cost is $49.99 at http://on.king.net/raspberrypidisplay
• AA Battery Portable Charger Power Pack Power Supply / UPS for the Raspberry Pi Model B / Model B+ / Model A+ Motherboard. Of course you can use any micro-USB cable to power your Raspberry Pi, cost is $14.95 at http://on.king.net/aabattery
• Edimax EW-7811Un 150Mbps 11n Wi-Fi USB Adapter, Nano Size Lets You Plug it and Forget it, Ideal for Raspberry Pi / Pi2. You got to control your robot, let’s go wireless. Hopefully I can make this robot become autonomous, cost is $9.99 at http://on.king.net/edimax
• Kootek GY-521 MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module. This is for self-standing robot feature, cost is $5.99 at  http://on.king.net/mpu6050
• L293D Stepper Motor Driver, cost is $6.74 at http://on.king.net/motordriver
• 2WD Motor Robot Car Chassis Kit. I search Amazon for a 2 wheel motor robot car that I can use for this project, cost is $12.88 at http://on.king.net/2wdmotorrobot
• MB102 Breadboard power module + 830 tie point Experiment Mini Breadboard w/Jumper Wires for integration of other parts of the robot, cost is $8.99 at http://on.king.net/jumperwires
• See all the parts of this project at http://store.que.com/listing-category/raspberry-pi/

A sub-total of $149.52, not bad compare to my other robot project (Robot.Guru).

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It’s getting close, still waiting for some parts to complete the foundation of my Self Balancing Robot.

Assembled with all the parts … it’s looking good.

Next testing the program.

Testing MPU6050, not responding see below.

pi@raspberrypi ~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: — — — — — — — — — — — — —
10: — — — — — — — — — — — — — — — —
20: — — — — — — — — — — — — — — — —
30: — — — — — — — — — — — — — — — —
40: — — — — — — — — — — — — — — — —
50: — — — — — — — — — — — — — — — —
60: — — — — — — — — — — — — — — — —
70: — — — — — — — —

I need to check the wiring between MPU6050 and Raspberry Pi.

Testing Motors I’ve got some issues. When I test the motors. Only left wheel will spin for 5 secs, in reverse both of them spin for 5 seconds. Right now, a mystery to solve … help anyone!

Still in progress …

Please come back again for updates … use the comment below to post your feedback or suggestions.

Check other robot project at TestRobot.com.