Circuit Diagram

This diagram uses the original Gemma but you can also use the Gemma M0 with the exact same wiring!
Click to enlarge! Five LED sequins are sewn in parallel to GEMMA's D2 and GND pads.

Conductive hook & loop is sewn to GND and D1 pads. In the Arduino program D1's internal pullup resistor is activated.
This guide was first published on Apr 30, 2014. It was last updated on Sep 17, 2018. This page (Circuit Diagram) was last updated on Oct 22, 2017.