Download: Temperature-controlled Peltier Mini Fridge (Thermoelectric)

By Joseph Rautenbach


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This is my homemade Peltier Thermoelectric mini fridge. A Peltier thermoelectric cooler was used for the cooling, a polystyrene box for insulation, and old PC fans/heatsink for the heat exchangers.
An eBay thermostat was used for setting and controlling the temperature which is very handy, it can easily cool down the inside to 2°C.

Blog post with further explanation:
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Resources list:
• Peltier cooler:
• Thermostat:
• Heatsinks - salvaged from old computers and electronics
• Power supply - In any desktop computer or at computer stores. Instructions to modify: