Single phase motor speed controller using potentiometer, 0-10V or RS485 modbus RTU.

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Hello friends in this video I have developed a single phase motor speed controller card.
this card has the option to control speed via potentiometer, 0 to 10V DC or RS485 Modbus RTU protocol.
This can handle up to load of 1KW single phase induction motor.
the principle of speed control is based on zero cross over detection and triac firing.

code, schematic & PCB file
https://drive.google.com/file/d/10ygFeyYRIjcVjLoCYZkf8oTgoUtYXZKC/view?usp=sharing

Caution.
230V AC voltage is involved in this project.

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** This video is made for educational purposes only. Please use your own judgment, knowledge, care, and precaution if you plan to replicate. **