Display with 8 LED segment displays of size 5x7. Reverse engineered by kahvikello & Zouppen.
Slave board pinout:
| Pin | Telepulssi header | Pro Micro pin |
|---|---|---|
| 1 | 5V | Vcc |
| 2 | 5V | Vcc |
| 3 | GND | Gnd |
| 4 | GND | Gnd |
| 5 | IC 22 OUTPUT ENABLE | 2 |
| 6 | IC 21 OUTPUT ENABLE | A3 |
| 7 | IC 20 OUTPUT ENABLE | 3 |
| 8 | IC 19 OUTPUT ENABLE | A2 |
| 9 | IC 18 OUTPUT ENABLE | 4 |
| 10 | IC 17 OUTPUT ENABLE | A1 |
| 11 | IC 16 OUTPUT ENABLE | 5 |
| 12 | IC 15 OUTPUT ENABLE | A0 |
| 13 | ROW LATCH (IC 14) | 6 |
| 14 | COLUMN LATCH (IC 15-22) | 8 |
| 15 | SHIFT CLOCK (IC 14-22) | 15 (SCK) |
| 16 | SERIAL DATA INPUT (IC 14-22) | 16 (MOSI) |
Max clock frequency 24 MHz