K3ng Keyer Schematic !link! -

Additionally, the has user-contributed schematics for specialized builds (e.g., portable keyer with Li-Ion charging circuit).

On his workbench sat a beautiful, machined-aluminum Morse code paddle. Next to it lay a mess of jumper wires and a semi-populated circuit board. He was building a "K3NG Keyer"—a popular, open-source microcontroller project designed to turn a simple paddle into a sophisticated, computer-controlled Morse code generator. k3ng keyer schematic

Elias rummaged through the drawer, pushing aside ancient crystals and strange connectors, until his fingers brushed a small, blue circuit board. An Arduino Nano, still in its anti-static bag. He was building a "K3NG Keyer"—a popular, open-source

"It supports LCDs, PS2 keyboards, potentiometers for speed control... hell, it even speaks in Morse if you want it to," Silas explained. "But the core schematic is simple. You have inputs for your paddles, outputs for your rig, and a few resistors to keep things polite." "It supports LCDs, PS2 keyboards, potentiometers for speed

Plug USB into Arduino. Done.