Twistyplexing: A Charlieplexing variety

Twistyplexing is a neat variety of Charlieplexing, with 2 small benefits. Read full post

APA102 1515 LEDs

For upcoming projects I've been looking for low current programmable RGB LEDs, and a new the new APA102 1515 seems like an improvement over the 2020. Read full post

APA102 LED Current Usage

During a recent project I've been surprised to learn about idle current usage of the APA102 LEDs. Read full post


ESP8266 APA102 Bulb

As an experiment in HW design an alternative to the Philips Hue was built. It's fully programmable over WiFi. Read full post