Phidgets Forums

I have a Dual Relay Board 3051_1B, and have wired it with a HUB0000_0.

I have:
- One VINT port hooked up to the 3051's 3-pin connector via a Phidget cable
- Two VINT ports sending digital output to 3051's Control 0 and Control 1.

I know the 3051's 3-pin connector is used to power the board (red wire) and provide a ground (black wire). What is the white wire used for?

I see in the 3051's User Guide, it's connected to an analog input. However, when I energize/deenergize the relay, the analog input doesn't pick up a signal.

Can you confirm the white wire is unused?

for the 3051, the white wire isn't hooked up to anything. The device is connected to the analog input purely for providing power to the relays.