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RGB LED Illuminator - Digital TTL Control
Digital TTL control is done through a 9 pin DSUB male connector with the following pin assignment:
| Pin | Function | |
| 1 | Ground | |
| 3 | Blue | (0V - OFF, 5V - ON) |
| 4 | Green | (0V - OFF, 5V - ON) |
| 5 | Red | (0V - OFF, 5V - ON) |