OpenFader

A project to modularize motorized faders with I2C control based on the ATtiny1614.

Currently very much in development.

PXL_20251116_022249522.1.mp4

I've currently only designed a version for the Behringer MF60T, which is one of the cheapest motorized fader on the market. For other faders with different pin locations, the circuit is identical, but the locations of the pads will have to be redesigned. For testing, you can always use wires to attach the appropriate PCB pads to the fader.

I2C Registers:

• 0x00 Potentiometer Position (8 bit, Read/Write)

  Register 0x00, the fader position, can always be read to get the fader's current position. Whenever the position is written, the fader moves to the position. Once it has reached the position, the motor turns off. If the fader cannot reach the position, either it takes too long or it detects movement in the other direction, the motor turns off.

• 0x01 Mode/Settings (8 bit, Read/Write)

  7	6	5	4	3	2	1	0
  Setpoint Deadzone			Motor Speed / Strength			Continuous Mode	Proportional Mode

  When bit 0 is high, as the fader approaches the setpoint, it slows down. When bit 1 is low, normal operation as described below. When bit 1 is high, the motor is always trying to get back to the setpoint.

• 0x02 Capacitive Touch Reading (8 bit, Read only, Not yet implemented)