The Logic controller is a custom developed pcb for a R7 Astromech unit which has 2×2 FLDs chains and 2 PSIs. It can be used to wire traditional Teeces to it (minor code changes needed) and/or 3 digital light chains via DOUT 1,2 & 3. Out 1-3 are twice on the board. Under the Nano is a mini buck converter to provide stable 5V if you want to power it between 7-12V. Or simply use the 5V input terminal.
Available at shop.printed-droid.com

Pinout
| Output | D | C | L |
|---|---|---|---|
| Out 1 | D12 | D11 | D10 |
| Out 2 | D9 | D8 | D7 |
| Out 3 | D4 | D5 | D6 |
| Digital Output | Pin |
|---|---|
| DOUT 1 | D2 |
| DOUT 2 | D3 |
| DOUT 3 | D13 |
