Introduction: DIY Hitechnic IR Beacon

Picture of DIY Hitechnic IR Beacon

This is my own version of the IR Beacon from Hitechnic.  It outputs a square wave of 1200 hz.  It uses an Attiny25v microcontroller, programmed in C with AVR Studio.  It "bursts" the LEDs, much like in a TV remote, to increase range.  

The LEDs do appear faint in these pictures; this is because the battery goes really quickly due to the extreme current drain (about 30 - 45 minutes of continuous use).  This beacon proved to reach out about 7 feet during testing.

The schematic was made in Eagle.  It says "TINY22P", it is actually a TINY25v.  Also, the LEDs should be facing the other way, I messed up the polarity.

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