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September 19, 2013 AT 12:51 pm

Make a TRINKET or GEMMA mini theramin!

Trinket Theramin-Breadboard

Trinket Trinket-Theramin

Make a TRINKET or GEMMA mini theramin! @ The Adafruit Learning System.

In the Adafruit Arduino Lesson 10, Pseudo-Theramin, an Arduino Uno is combined with a light-sensitive cadmium sulfide (CdS) photocell to make a light responsive music machine. This project allows you do do the same with an Adafruit Trinket or Gemma mini-microcontroller. This project costs less and works in smaller circuits or wearable projects.

Changes in light intensity on the photocell will change the pitch of a note on the piezo speaker as you wave your hand in front of the cell. While not a true theramin (which uses changes in a circuit’s reactance), this project is much simpler to build.

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