Gronk
Pinout for control panel
[edit | edit source]The original "SIGN MAX" control panel has an LCD, a bunch of buttons, and a ten-pin connector.
5 pins to LCD, red is pin 1
Note: Not looking into the LCD yet
| Pin | Function |
|---|---|
| 1 | +5 V / RED led |
| 2 | GND |
| 3 | GREEN led |
| 4 | Reset button (ties to GND) |
| 5 | Buttons row 1 |
| 6 | Buttons row 2 |
| 7 | Buttons row 3 |
| 8 | Buttons column 1 / LCD 1 |
| 9 | Buttons column 2 |
| 10 | Buttons column 3 |
Button matrix configuration
[edit | edit source]There's a diode at the bottom of every column, so each of 5/6/7 should be pulled high in turn, and 8/9/10 scanned for their values. There should be pulldowns on 8/9/10.
| 8 | 9 | 10 | |
|---|---|---|---|
| 5 | ONLINE | SET | TEST |
| 6 | P+ | S- | P- |
| 7 | - | OK | S+ |
Repository
[edit | edit source]Currently at [1].