So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS-520S HF ham radio. This post (and the video found after the break) doesn’t cover the entire project. It’s rather ...

Most radio circuits are tuned to pretty close tolerances and going from 27 MHz to 50 MHz seemed like quite a leap. The answer? An Arduino and ... probably isn’t a project for the faint of ...

This is an OpenSource project based on Arduino platform, for building a smart watch with some interesting functions: OLED Display, clock RTC, Satellite pass prediction routine, Moon phase routine, ...

This is an VFO for use with old Ham Radio transceivers and with QRPs. I'm intending to use on the Ararinha-QRP-Triband project that I posted the PCB here. It's a 10x10cm board with a nice all metal, ...