K3ng Keyer Schematic Free Jun 2026

Connect one outer leg of a 10k-ohm linear potentiometer to . Connect the other outer leg to Ground . Connect the middle leg (wiper) to Analog pin A0 . 5. Advanced Schematic Expansions

Arduino Nano +5V -----[10k]-----+----[Paddle Dah]---- GND | +----[Paddle Dit]----- GND

Connect the of the transistor to Arduino GND and the outer shield (ground) of your rig's key jack. k3ng keyer schematic

: For those using an Arduino Mega, the UN7FGO K3NG Shield is a highly recommended PCB design that breaks out all major features. Configuration & Setup

Highly recommended because they only require 4 wires. Connect VCC to 5V, GND to Ground. Connect one outer leg of a 10k-ohm linear potentiometer to

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

Pass the output through a 10µF electrolytic capacitor to block DC voltage. Configuration & Setup Highly recommended because they only

Safely interface Arduino’s 5V logic to the transceiver’s key input (which may be 0–12V, high impedance, or require current sinking).

The K3NG Keyer is a popular electronic keyer designed for amateur radio operators. It is an open-source, microcontroller-based keyer that can be used for Morse code transmission. The K3NG Keyer schematic is a crucial part of building and understanding the device.

At its heart, the K3NG keyer schematic bridges human input (paddles or keyboard) to an RF transmitter while providing audio/visual feedback. The schematic can be divided into five functional blocks.