K3ng Keyer Schematic -

Because the K3NG keyer is modular, you can add or remove features at any time. For example, if you initially built the keyer without a display, you can later add a 20×4 LCD and simply uncomment #define FEATURE_LCD_4BIT before re‑uploading the firmware. The same applies to a keyboard, memories, or a CW decoder.

Most basic builds use the or Arduino Uno (ATmega328P). For advanced features like multi-protocol displays, ethernet, or extensive macro storage, builders upgrade to the Arduino Mega 2560 due to its superior flash memory and pin count. 2. The Paddle Input Circuit k3ng keyer schematic

The K3NG project has an active community on groups.io where builders share their experiences, ask questions, and provide support. The official source code and documentation are hosted on GitHub where you can also find detailed pin mapping files ( keyer_pin_settings.h ) and feature options ( keyer_features_and_options.h ). Because the K3NG keyer is modular, you can

The is a highly versatile, open-source Morse code keyer project based on the Arduino platform . Designed by Anthony Good (K3NG), it is widely regarded as one of the most feature-rich keyers available, rivaling expensive commercial units. Core Schematic Components Most basic builds use the or Arduino Uno (ATmega328P)

K3NG Keyer Wiki (contained within the GitHub repository)

– safer for older tube rigs: