The K3NG schematic is famously flexible, allowing builders to "enable" or "disable" hardware features in the code to match their specific build: A Simple DIY “Unikeyer” Based on the K3NG Design
The is a versatile, open-source Morse code keyer based on the Arduino platform, developed by Anthony Good (K3NG). It is highly modular, allowing builders to choose specific features by enabling or disabling them in the code. Core Schematic Components
K3NG Keyer Wiki (contained within the GitHub repository) k3ng keyer schematic
: Use a 4N25 or ILQ74 optocoupler. Connect an Arduino digital output pin through a 220-ohm resistor to the optocoupler's internal LED anode. Connect the cathode to GND. Connect the optocoupler output transistor across the rig's key line.
potentiometer connected to an analog pin for real-time speed control. The K3NG schematic is famously flexible, allowing builders
Silas shuffled forward, his leather apron creaking. He peered at the schematic printout Elias had taped to the wall. It was a convoluted mess of logic gates and discrete components, drawn on the back of a pizza flyer.
Connecting an Arduino directly to a radio's key jack is risky due to high voltages, reverse polarity, and ground loops. Connect an Arduino digital output pin through a
When you download k3ng_keyer-master.zip from GitHub and open the /hardware folder, you will find PDF schematics. Look for these specific labels:
PTT/FSK