Mini Refrigerator
A homemade 18L refrigerator using a semiconductor cooling chip as the heat pump and 2 CPU coolers as the heat exchangers.
Mini Web Camera
Combine a self-made motherboard, 3D-printed shell, and lithium battery to create a compact web camera using the ESP32-CAM.
Mini Gimbal Charger
A self-designed low-cost ($5) mini charging handle for sports camera (57 g, 5 Wh).