esp32-flipdot-controller

Directly controls a Hanover Displays Ltd. 7020-20-01 dotboard from an R014B-model 20x14 flipdot display.

See the associated blog post on damow.net!

Pinout

GPIO numbers refer to the ESP32 GPIO pins. Pin numbers refer to the dotboard's 14-pin flex connector.

• GPIO 21 - Enable Display (Pin 2)
• GPIO 18 - Column Advance (Pin 7)
• GPIO 19 - Reset (Pin 8)
• GPIO 17 - Set/Unset (Pin 9)
• GPIO 5 - Row Advance (Pin 10)

In addition, GPIO 4 controls the coil drive on Pin 12 via a FET/BJT.