I just added the code from Mark Lord, who did the design of the standalone handcontroller via the aux port of the focuser. I took it from the source disclosed earlier in this thread. Guess this could help for getting our project up to speed. The code is intended for an arduino pro mini or micro. The serial comm part we don´t need because we would use what´s already defined in the existing indi driver for handling serial communication. The nunchuck part we don´t need because we use the inid_joystick driver. The rest could probably be helpful.

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