Arduino based CW keyer скачать в хорошем качестве

Arduino based CW keyer

I set up an Arduino as a cw/mcw keyer using an Arduino sketch published by Steven T. Elliott (http://openqrp.org/?p=343). To prevent input flutter, I had to use a couple of 10k pull-up resisters to maintain +5v on the inputs when not being keyed. The program produces 2 outputs, an audio out, and traditional +5v/0v out. For this MCW use, I connected the audio output to both a piezo-speaker and into the audio input of my SignaLink SL-1, which keys the radio. This keyer can also support normal, non-modulated CW via the non-modulated port. I'm not using any sort of other keyer, either in the radio or on my paddles. The keyer is totally defined in software on the Arduino.