If your rig does not have a built-in sidetone, or you want to practice offline, the K3NG code features an audio output pin.
Do not rush into soldering. Wire the basic paddles, sidetone, and output on a breadboard to test functionality using the K3NG GitHub code. k3ng keyer schematic
The schematic typically uses (normally open). Each button has one leg to Ground and the other leg to an Arduino analog or digital pin via a 10kΩ resistor (pull-down) or using the internal pull-up resistors. If your rig does not have a built-in
In the world of amateur radio, few open-source projects have achieved the cult status of the . Developed by Anthony Good (K3NG), this feature-rich CW (Continuous Wave) keyer has become the gold standard for homebrew station accessories. Whether you are building a simple portable paddle keyer or a fully automated contest station controller, understanding the K3NG keyer schematic is your first step toward mastering this versatile device. The schematic typically uses (normally open)
The built-in speaker pin (Pin 8) is weak. The schematic can be extended to include an LM386 audio amplifier circuit. This adds a 10k pot for volume and a small speaker. Look for "K3NG Audio Filter" schematics.
"The K3NG Keyer," Silas said, setting his coffee down on a stack of QST magazines. "Open-source. The holy grail of the modern shack. It’s not just a schematic, kid; it’s a philosophy."