- Portable fridge
- Search eBay for "portable fridge cooler warmer 110V", about $40
- Controller:
- PocketBeagle computer
- Shop official distributors, about $25
- Micro SD card, class 10, 4GB or more, for PocketBeagle
- About $10
- USB type A breakout module, for PocketBeagle
- Search eBay for "USB type A breakout module", about $5
- USB WiFi adapter for networking
- Look for a Raspberry Pi-compatible model, about $10
- DC to 5VDC converter, provides 5V power to PocketBeagle
- Search eBay for "DC step-down converter", about $5
- PocketBeagle computer
- Power electronics:
- H-bridge module for controlling Peltier
- This project uses an L298N; you may find newer and better substitutes
- Search eBay for "L298N motor driver module", about $5
- MOSFET module for controlling fan
- Search eBay for "Mosfet Arduino module", about $8
- H-bridge module for controlling Peltier
- Temperature sensing electronics:
- Thermistor, 2 ea., 10k ohm at 25 deg. C.
- Search eBay for "10k thermistor"
- Resistors and capacitors:
- Junk box, or eBay; see fritzing model for values
- Thermistor, 2 ea., 10k ohm at 25 deg. C.
- Other parts:
- Thermagon 6100 heat-conductive pad for conducting heat from fridge to internal thermistor
- Header wires and solder
- Heat-shrink tubing and custom-crimped connectors improve appearance