Best for a minimalist, compact keyer. Supports standard iambic keying, speed potentiometers, memories, and basic command buttons. Memory limits (32 KB) prevent running all features simultaneously.
Connected to specific Pins (e.g., A0/A1) with 10k pull-up resistors. k3ng keyer schematic repack
Keying line (via Transistor to Transmitter), Sidetone (Piezo buzzer). Best for a minimalist, compact keyer
For amateur radio operators who enjoy Morse code (CW), the is nothing short of a legend. Developed by Anthony Good (K3NG), this open-source project transforms a simple Arduino (like the Uno, Nano, or Mega) into a feature-packed CW keyer that rivals commercial units costing hundreds of dollars. We’re talking about: Best for a minimalist
Add a 100µF electrolytic capacitor across the VCC and GND pins of the Arduino to smooth out power ripples.