The breadboard circuitry is similar to CIRC02's layout. We suggest either using the Red 5mm LEDs or Green 5mm LEDs. Pick your favorite color and use that!

The 9V battery + clip is very handy for this circuit. You can stick it on the back of the mounting plate with double-sided tape. 

This guide was first published on Aug 18, 2017. It was last updated on Aug 18, 2017.
This page (Wiring) was last updated on Oct 25, 2020.