Minty Photocell Theremin

Introduction: Minty Photocell Theremin


Here are some instructions on how to make your own photocell theremin inside a Altoids box:

Parts
(2) 555 timers
(2) Photocells or phototransistors
(2) .01 mF capacitors (play with different sizes for different sounds)
(1) 1K resistor 
(1) 1/8" audio female input or speaker
(1) Hookup wire
(1) Toggle Switch
(1) LED indicator light
(1) 9V battery and battery connector
(1) Altoid Box

The circuit diagram is above (taken from popular science) along with the PCB design (designed using Fritzing use the fzz file for labels and part positioning, note second battery labeled ToggleSwitch is not a battery but a toggle switch).

Here is a project that I created using this circuit as a starting point just as an example to show how you can get creative with it!


Documentation for Light Hum:
http://itp.dannewoo.com/2012/12/light-hum-2/

Have fun!

Danne

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Pocket Sized Contest

Participated in the
Pocket Sized Contest

UP! Contest

Participated in the
UP! Contest

Be the First to Share

    Recommendations

    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge
    • Finish It Already Speed Challenge

      Finish It Already Speed Challenge

    2 Discussions