Control it with your smartphone and view the underwater scenery through a browser. A sci-fi dream realized with an ESP32 and a 3D printer. The ESP-FLY featured in the previous [Kato RC #29] was a $30 ...

The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery.

SONOFF sent us a sample of the NSPanel Pro Gen2 Smart Home control panel for review. It’s a standard 86-type controller powered by a Rockchip RK3326-S SoC, equipped with 2GB RAM and 32GB eMMC flash ...