19 Controlling the LED using the Phidget

Unclip both ends of the jumper wire connecting the multimeter to the +5V plug of the Phidget.

Unclip the end of the jumper wire connected to the negative probe of the multimeter and clip it to the red plug marked with a 0 on the Phidget as shown in the figure below:

The red plug marked with a 0 is digital output 0 on the Phidget. The digital outputs are numbered sequentially 0 through 7. The digital outputs of the Phidget can be controlled programmatically using MATLAB.