A No-Calibration Metal Detector

A traditional early project for someone discovering a love for electronics has been for many years a metal detector. This would mean a few transistors back in the day, but today it’s more lik…

DIY 4G Air Quality and Environment Monitor - Record Data Anywhere - The DIY Life

We're going to use the Maduino Zero 4G board to create an air quality and environment monitor that posts data over a mobile network.