Controller for the flip-dot display with 34-pin connector. For example produced by Lawo-Luminator-Europa Mark IV Industries GmbH.
Version 28x19
Version 28x24 with LED lights
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | GND | 2 | GND |
| 3 | GND | 4 | GND |
| 5 | 5V | 6 | 5V |
| 7 | A0-X | 8 | DATA-X |
| 9 | A1-X | 10 | ENABLE-Y-SET |
| 11 | A2-X | 12 | ENABLE-Y-RESET |
| 13 | B0-X | 14 | ENABLE-X-1 |
| 15 | B1-X | 16 | ENABLE-X-2 |
| 17 | A0-Y | 18 | ENABLE-X-3 |
| 19 | A1-Y | 20 | ENABLE-X-4 |
| 21 | A2-Y | 22 | ENABLE-X-5 |
| 23 | B0-Y | 24 | ENABLE-X-6 |
| 25 | B1-Y | 26 | ENABLE-X-7 |
| 27 | n/c | 28 | ENABLE-X-8 |
| 29 | 24V | 30 | 24V |
| 31 | GND | 32 | GND |
| 33 | GND | 34 | GND |
Driver board has two connectors. The output connector ST2 mostly duplicates 1:1 singnals from the input ST1 but ENABLE-X- signals are shifted.
| Pin | INPUT ST1 | OUTPUT ST2 |
|---|---|---|
| 13 | ENABLE-X-1 | ENABLE-X-2 |
| 15 | ENABLE-X-2 | ENABLE-X-3 |
| 17 | ENABLE-X-3 | ENABLE-X-4 |
| 19 | ENABLE-X-4 | ENABLE-X-5 |
| 21 | ENABLE-X-5 | ENABLE-X-6 |
| 23 | ENABLE-X-6 | ENABLE-X-7 |
| 25 | ENABLE-X-7 | ENABLE-X-8 |
| 17 | ENABLE-X-8 | ENABLE-X-1 |
The ENABLE input of FP2800 X Driver is always connected to ENABLE-X-1 connector pin. For example when ENABLE-X-3 is set to HIGH the first two displays in a row will ignore it, but after two decrements the signal will be applied to ENABLE-X-1 ST1 of the third display matrix and will activate it.
This prototype uses Arduino Nano and two 74HC595 shift registers to control up to 6 matrices. By adding another 595 it can control up to 8 display matrices.
Driver board with Arduino Nano and three 74HC595 shift registers opitmized for single-sided PCB that can be milled with 3018 CNC. 3 digital pins are used for controlling shift registers, analog pins A4 and A5 can be used to receive commands over I2C. Pins A0-A2 connected to DIP switches choosing I2C address.
Schematic in KiCad 6 format checked in under .\Driver-boards\FlipDot34Nano\schematic\FlipDot34Nano
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It's a hobby project; I am not affiliated with any company producing flip-dot displays.