Are self-balancing robots old? No! not at all for all the enthusiast available out there.It is amazing to see these bot struggling to balance. Actually, I have already made this bot once but that was without PID. This version has a PID embedded in it with less coding complexity.
Part List
1. DC Motors or better be servo motors or better be stepper motors
2. L293D
3. 0.1uF X 4 Ceramic Capacitors
4. Bluetooth Module HC05
5. 0.1 uF Ceramic Capacitor
6. Hot Glue
7. Arduino (Any version of your hobby box)
8. GY-521 Gyro+Accelerometer”

Link

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