[Kevin] recently scored a Morse code keyer/sounder unit from the 1920s on eBay. While many hams would love to use an old keyer for CW, [Kevin] took a different route and repurposed it into a ...

If you ever see a HAM playing with his CW rig, chances are they’re using ... All this connects to three pins on an Arduino. All the micocontroller needs to do is measure the rise time a touch ...