This Arduino Nano Si5351 VFO code designed for the Tuna Tin S, a low power amateur radio radiotelegraphy (CW) transmitter designed by Bob Fontana, AK3Y, can also be used for a general purpose variable ...

An hourglass tells you what it is in the name — a glass that you use to measure an hour of time passing by. [EDISON SCIENCE CORNER] has built a digital project that mimics such a thing, with little ...