Build It!

This diagram uses the original Gemma but you can also use the Gemma M0 with the exact same wiring!
Note: We will be soldering to the backside of the Gemma.

To assemble the candle, bend the pins so they reach the correct connectors on the Gemma.

  • LED data-in to Gemma D0
  • LED 5V to Gemma Vout
  • LED Ground to Gemma GND

The LED's data-out pin is not needed and located closest to the flat side of the LED.  You can cut it off or just bend it out of the way.

Put a drop of solder on each connection to hold it.

This guide was first published on Nov 04, 2015. It was last updated on Nov 04, 2015.
This page (Build It!) was last updated on Jul 12, 2020.