Cheap ATiny Proximity Sensor

Posted on April 26, 2012 by robertwilkie

Nice instructable as to how to make a 2-4 dollar prox sensor.  This could come in handy for alarms, robots, even CNC based systems.  Read about it here:

http://www.instructables.com/id/Make-an-Attiny13-based-IR-proximity-sensor-for-2/

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