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Hi Ray,
I was just going of the sensor temp in the capture program. I think the dedicated cooled cameras only chill the sensor whereas the diy model cools the whole casing. The temp of the TEC module is controlled by the power source, in my test I was running it via a usb phone charger. Its a 12v module so upping the voltage from 5v to 12v should increase the cooling power. If you hunt around on ebay you will be able to find a unit for a fraction of the adafruit price, mine cost around $10.
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