Circuit Diagram

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This diagram uses the original Gemma but you can also use the Gemma M0 with the exact same wiring!
  • Gemma D0/A2 pin <--> Piezo (+)
  • Gemma D1/A0 pin <--> NeoPixels
  • Gemma D2/A1 pin <--> Photocell <--> 10k Resistor
  • Gemma Vout <--> Resistor and NeoPixel (+)
  • Gemma Gnd <--> Photocell,  NeoPixel (-), Piezo (-)
 Tools and Supplies Prepare Sensor and Piezo Buzzer 

This guide was first published on Aug 06, 2014. It was last updated on Jul 07, 2014.

This page (Circuit Diagram) was last updated on Jul 07, 2014.

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