optoisolator

March 22, 2010 | Filed Under Installation Art, Music Composition, Sound Sculpture, art, physical computing 

I changed the optoisolator circuit I used in the light-box project I did after doing some more datasheet research for this installation piece.  I’m just going to post a labeled picture rather than a circuit diagram (due to time).  I’m also posting a picture of a soldered finished product (with two optoisolators).  This circuit turns powers a 12V motor with a 12V battery controlled from a 5V arduino board (separated by an optoisolator in order to make sure the 12V cannot reach the arduino). This circuit works great with PWM output of the arduino = very smooth and responsive.

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