Archive for date: January 11, 2012

Hellduino: Sending Hellschreiber from an Arduino

January 11, 2012 | Amateur Radio, Arduino | By: Mark VandeWettering

Update: Welcome Hack-a-day readers! If you are looking for the schematics for this “transmitter” (really just a simple oscillator, send some love to radio guru Steve Weber over at his website. You could really use any oscillator you like, even a canned oscillator (although the square waves would generate lots of harmonics). Yesterday’s project coupled […]

Late night pondering about the micro-power Morse beacon…

January 11, 2012 | Amateur Radio | By: Mark VandeWettering

Before toddling off to bed last night, I did a bit more tinkering, and a bit of thinking, and then a bit of research. The YouTube video I made showed that the spurious radiation from just attaching a clip lead from the oscillator to my oscilloscope gave enough signal to inject itself into my RFSpace […]