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Wireless Temperature Sensor Comparison

The evolution of my wireless temperature sensor from November 2011 to June 2012.

 

From left to right, the first ATmega 328 based prototype, the improved ATmega 328 version (one of several), the first ATtiny version and the PCB ATtiny version.

 

More info including schematic, eagle files and gerbers on my blog here.

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Uploaded on June 22, 2012
Taken on June 22, 2012