Spectrum Analyzer with Arduino: An Arduino Due and a PC give you the frequency response of any device, filter or amplifier, up to 100kHz.

This project provides a cost-effective solution for analyzing the RF spectrum in the 300-450 MHz frequency range. It is ideal for hobbyists and professionals working with ISM band devices, such as ...

Every machine has its own way of communicating with its operator. Some send status emails, some illuminate, but most of them vibrate and make noise. If it hums happily, that’s usually a good sign, but ...