The is widely recognized as the most full-featured, open-source Morse code keyer available for amateur radio. Developed by Anthony Good (K3NG), this flexible system runs on the Arduino microcontroller architecture , matching or exceeding the capabilities of expensive commercial units. Understanding the K3NG keyer schematic allows ham radio operators to transition from a basic breadboard layout to a fully featured standalone unit. Core Hardware Architectures
Connect the common (ground) line of your paddle to the Arduino GND. Connect the Dit and Dah lines to two separate digital pins (typically D2 and D3). k3ng keyer schematic
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The is widely recognized as the most full-featured,
To prevent stray Radio Frequency Interference (RFI) from causing false triggers during transmission, place a Core Hardware Architectures Connect the common (ground) line
: A simple NPN transistor (like a 2N2222) or a reed relay is used to isolate the Arduino from the radio's keying line.
Visualizing your speed, operating mode, and decoded text makes the keyer highly interactive. : Connects to Analog Pin A4. SCL (Serial Clock) : Connects to Analog Pin A5. Power : Pulls from the +5V and GND rails. Rotary Encoder Integration