Its modular code design means you can easily select which features to include, which is why the "repacks" exist. The K3NG code can be flashed onto a standalone AVR chip or a full Arduino board, giving hardware designers incredible flexibility.
To successfully build the K3NG Keyer from a schematic repack, follow these steps:
While the GitHub repository contains countless options, a "repack" of the core schematic involves simplifying the pin settings to a breadboard-friendly setup. Essential Components k3ng keyer schematic repack
Connects to Digital Pin D5 . Used to enter the built-in audio menu.
Pin 1 to GND , Pin 2 (wiper) to Analog Pin A0 , Pin 3 to 5V . Its modular code design means you can easily
Use 3.5mm (1/8") stereo jacks for the paddle and sidetone, and a RCA jack for the rig keying output.
Many repacks prioritize the Winkey protocol , allowing the keyer to interface with logging software like N1MM. Where to find files Essential Components Connects to Digital Pin D5
Ensure your keying line is well-shielded to prevent RF from the transmitter from resetting the Arduino. Conclusion
So, you have a schematic, and you're ready to build. How do you move from theory to practice?
: A paddle (Left/Right) connected to digital pins and a 10k potentiometer for speed adjustment.