In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...
Yeckel] recently put the finishing touches on an ambitious implementation of a simple D-STAR (Digital Smart Technologies for Amateur Radio) transceiver using some very accessible and affordable ...
I'm using two different (but very similar) fingerprint readers here, an R307 and a slightly different, Adafruit-compatible version. I show here how to enrol fingerprints using the Windows (only) demo ...