K3ng Keyer Schematic 〈Tested | 2026〉

Connect a standard piezo buzzer between Digital Pin 13 and GND .

The K3NG keyer is an open-source software project written for Arduino microcontrollers (primarily Arduino Uno, Nano, or Pro Mini). Its primary goal is to provide a fully functional, feature-rich CW keyer with capabilities that exceed many commercial units. Automatic keyer functionality (Iambic A/B, Ultimatic, etc.) k3ng keyer schematic

At its absolute baseline, the K3NG keyer requires very few components. If you just want a functional keyer to connect to your paddle and transmitter, the circuit consists of three main blocks: the microcontroller, the input section (paddles), and the output section (keying circuit). Connect a standard piezo buzzer between Digital Pin

The project, developed by Anthony Good (K3NG), has revolutionized homebrew amateur radio CW (Morse Code) keyers. It is an open-source, Arduino-based, highly versatile, and feature-rich keyer that can be customized to suit any operator—from QRP operators to dedicated contest enthusiasts. Automatic keyer functionality (Iambic A/B, Ultimatic, etc

A basic build requires minimal components, while advanced versions can include LCDs and specialized interfaces. Essential Components A tiny and open source CW keyer - Dhakajack - Templaro

Here's a simplified block diagram of the K3NG keyer schematic: