Personal Peltier Cooler for 22 mm Watch Strap
thingiverse
I modified the design by JarnoV to use a standard 22 mm watch strap instead of the built-in printed watch strap. I also increased the height of the lid to accommodate a slightly thicker cooling fan and eliminated the cutout for the fan wire since I routed the fan wire through the lower part of the case. Parts List: * A 5 V, 40 mm fan (available on Amazon) * A 40 mm heatsink (available on Amazon) * A 12 V peltier cooler (available on Amazon) I connected everything to a cheap USB cable and it functions well when powered by a USB battery pack that supplies 5V at 2.1A. When powered this way, it does not get too cold for comfort but remains pleasantly cool. Printed in black AmazonBasics PETG
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