The Ollee Watch features an ARM Cortex-M4/M0+ low-power processor with support for Bluetooth Low Energy and a programmable NTAG213 NFC tag (although this is said to only be compatible with the F-91W ...

Learn how to turn old appliances into smart, Wi-Fi-enabled devices with ESP8266 and ESPHome. DIY automation made simple for your home.

While we often get a detailed backstory of the projects we cover here at Hackaday, sometimes the genesis of a build is a bit ...

Drums! You hit them, and they vibrate. It’s kind of fun. Piezoelectric elements can create electric current when they vibrate. [Will Dana] put two and two together to try and charge his ...