soldering and soldering and soldering and . . .

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

I have been doing a great deal of soldering the past week (all day, every day). Here’s are the arduinos and optoisolated transistor circuits:

Next is the main unit for the center sculpture = a unit housing two atmega328 chips (“two arduinos”) using the same clocking crystal, two RF transmitters and one digital compass.  The atmega328 chips have different programs on them and one of them controls the other.  I am showing the breadboard version next to the final perfboard soldered version (I haven’t pushed in the atmega328 chips in the perfboard yet):

Next is the arduino with RF receiver.  I am showing three versions = the commercial arduino, the breadboard arduino, and my perfboard arduino:

Here is another picture of all of the units together:

optoisolator

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

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.