Build cable

Cut off the headers from the end of the console cable and tin the leads with a little solder. A third hand tool can be helpful.

Slide on some heat shrink and prep your alligator clips. I matched the colors of the wires to make it easy on myself.

Connect black to ground, red to three volts, green to pin D0 and white to pin D1. This only leaves room for debugging one sensor on digital pin 2 aka analog pin 1. So if you’ve got NeoPixels connected that react to your sensor, you’ll have to leave them off for now.

If you're only planning to send data from GEMMA to the computer and not vice versa, you can leave the green wire (receive) disconnected, giving you access to one more digital IO pin!
This guide was first published on Aug 20, 2014. It was last updated on Aug 20, 2014. This page (Build cable) was last updated on Sep 12, 2019.