This instructables shows how to turn a TTGO T-Watch to a tiny robot.
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Step 1: Preparation
2 Tiny Motors
Motor Drive Board
8 mm Nylon or Steel Ball
7 mm Rubber Ring
4 x 14 mm M2 Screws
Step 2: 3D Printing
Download and print the chassis at thingiverse:
Step 3: Install Rubber Rings
Install 7 mm rubber ring on the 3D printed wheels.
Step 4: Install Wheels
Install wheels to the tiny motors.
Step 5: Install Chassis
Install nylon balls and motors to the 3D printed chassis.
Step 6: Soldering Work
Here are the connection summary:
Motor Drive Board IN1 -> Motor 1 pin A IN2 -> Motor 1 pin B Vcc -> T-Watch VDD3V3 GND -> T-Watch GND IN3 -> Motor 2 pin A IN4 -> Motor 2 pin B EEP -> Vcc OUT1 -> T-Watch pin 13 OUT2 -> T-Watch pin 14 OUT3 -> T-Watch pin 25 OUT4 -> T-Watch pin 26
Note: T-Watch pin 13 and 14 require soldering on FPC socket.
Step 7: Assembly
Put the T-Watch on the chassis and screw up 14 mm M2 screws.
Step 8: Adjustment
The 8 mm nylon ball may not align with the wheel at the same level. Enlarge the chassis upper hole can adjust the level.
Step 9: Program
Download and program the sample code at GitHub:
Step 10: Enjoy!
It's time to add your custom code to your tiny robot!
Step 11: What's Next?
Soldering the pins on FPC socket is not easy. TTGO is designing a motor board for building robot, hope this can release soon.
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