Large scale art project featuring PID controlled DC motor, absolute rotatory encoder with RS485 Modbus RTU Serial

[Alive24]

Repo Link: https://github.com/Alive24/BigTape

Highlights

• Running on three ESP32 modules with MicroPython, and communicate through HTTP on the local network.
  • See specs here
• Async PID control based on position with MicroPython simple-pid
• Absolute Rotatory Encoder through RS485 and ModBus RTU Serial with MicroPython Modbus library
  • See specs of the absolute encoder here
  • In the actual project, a LoRa Transmission Module is used for remote communication in RS485 and Modbus RTU Serial. See specs here.
• DC Motors driven by H-Bridge with PWM.
  • See spects for the H-Bridge here
• Dynamically setting PID position through HTTP server with MicroDot
• Triggerable by human movement based on Xiaomi Human Body sensor

Feel free to post if you have any question!

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update: I uploaded a video here: https://www.youtube.com/watch?v=SyM3ul_wpzs

[jimmo]

Wow, that is really cool @Alive24 !! Thanks for sharing. I don't suppose there's a video anywhere?

[Alive24]

Wow, that is really cool @Alive24 !! Thanks for sharing. I don't suppose there's a video anywhere?

Thanks!

I just uploaded one, and you should be able to view it here: https://www.youtube.com/watch?v=SyM3ul_wpzs