Honors physics has designed and assembled photo-resistor photogates using:
- AAA battery + holder
- 2200ohm resistor
- photoresistor (various)
- 1/8 stereo audio jack
- intercom wire
- Wal-mart travel hygiene bottle (fits nicely into a test tube clamp and cleans things up)
Each group was left to design their own containment vessel and configuration from the bottle. Here's a nice looking setup from Allison, Michelle, and present SCMaker member Nick.
Output from the circuit is recorded using Audacity on the dell 600D laptops running Ubuntu.
The light sources for these require 3 AAA batteries and are quite bulky.
During the meeting time, we will work on adapting a USB mouse circuit to power the LED flashlight.
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