K3ng Keyer Schematic Repack May 2026

While there is no single document widely titled "repack — solid paper" for the K3NG keyer, the "solid" or highly recommended way to obtain and build the K3NG Arduino CW Keyer is through its official GitHub Repository and the Radio Artisan project page.  Core Schematic & Wiring 

The Digital Archeology of CW: Why the K3NG Keyer Schematic Needed a "Repack"

In the world of amateur radio, the K3NG Keyer (created by Anthony Good, K3NG) is a legend. It started as a simple Arduino-based electronic keyer for Morse code (CW) and evolved into a Swiss Army chainsaw: a fully-featured contest keyer, a rotator controller, a satellite tracker, and an antenna switch manager. k3ng keyer schematic repack

keyer_pin_settings.h: Critical for repacks using the Arduino Mega; you must redefine pins to match the Mega’s layout instead of the standard Uno/Pro Mini layout. While there is no single document widely titled

Step 2: Convert the Schematic to a Compatible Format USB-to-Serial for PC CAT control (FTDI or CH340),

• USB-to-Serial for PC CAT control (FTDI or CH340), or direct USB on Arduino Pro Micro.
• PTT output for transceiver keying (with transistor/optocoupler).

The Processor Shift: A major part of the "repack" story is moving to the Arduino Mega platform . The older Uno/Nano boards often ran out of memory when users tried to enable "high-end" features like a CW decoder, USB keyboard support, or full Winkeyer emulation .