Anycubic Wash And Cure 2.0 Silent Mod

So, apparently "AT2100" is the only "silent" driver that works without completely modifying the firmware of the board. Everything else will make the motor stutter and seize up.

The front panel uses TM1638. The first 4 scan segments are used for the numbers and the colon mark, and the rest is used for the LEDs.

The encoder wheel seems to be wired directly to the MCU with pull-up resistors.

The connection:

 ^ Tab ^
[1234567]

 1: VCC (5V)

2: EN2 (Encoder Right)

3: EN1 (Encoder Left)

4: GND

5: DIO

6: CLK

7: STB

I forgot that SMPS have their earth connected. I forgot to turn the unit off while soldering, and I think I fried a pin on the main IC that happens to be crucial for the stepper motor to function...

Now the unit will not function, period. Only the timer display works. I'm beyond angry with myself right now.

I guess I could program a 3D printer board to stand in for the (relatively) obscure ST Micro MCU, but... :(

The new board is in the mail, so I will try to make the best of this situation.

Weirdly, at any current limit settings, the motor will start to spin, then stop. This works fine on the Cure mode (which worked fine on the A4988 too), however, the crucial Wash mode doesn't work. It only goes up to a certain speed, then stalls and vibrates. I tried everything and it's already 3AM, so I'll try again tomorrow.