wacca-vfd-arduino

Controls the VFD display of WACCA cabinet from an Arduino.

example video

Schematic

Rx,Tx of Arduino Pro Micro -> MAX232 -> Tx,Rx of VFD display (COM2 cable on WACCA cabinet)

Pin 2 of Arduino -> Coin selector (N-O contact)

Gnd of Arduino -> Coin selector (COM contact)

For other connections around MAX232 see tutorials online such as the one in DIYODE Magazine.

For RS232 pinout see e.g. PinoutGuide

Thanks

Thanks to Obiwan for helping with this protocol.

Thanks to image2cpp for helping to convert the graphics.

Graphics Data Format

1 bit, recorded as bytes where each byte is a quarter column. Thus the screen is laid out like this:

[0][4][8]
[1][5][9]
[2][6]...
[3][7]...

When converting on image2cpp you can upload a horizontal image and then enable Rotate: 90 and Flip: horizontally to get the correct data bytes.