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

[Sam Wilkinson] recently installed a Dreo CLF513S ceiling fan in his place — it’s cheap, well-sized, and blows air around as you’d expect it to. The only problem is that it only works with an ugly ...

[Dominic Buchstaller] wanted a neat, tidy entryway keypad that actually looked good. Prime goals were something slim, wireless, and with no visible screws. Dependency on the cloud was also a no-go.

The industrial computer features RS-485, RS-232, four digital inputs, and four digital outputs for data acquisition and equipment control, and supports Ethernet, and optional Wi-Fi/Bluetooth and/or 4G ...