K3ng Keyer Schematic

A simple piezo element can be wired directly between a designated PWM pin (often D11) and ground.

Are you keying a (low voltage) or a vintage tube rig (high grid-block voltage)? k3ng keyer schematic

Because users often use different Arduino models, the specific pin assignments are defined in the keyer_pin_settings.h file within the K3NG Keyer Code Feature Selection: You must enable or disable specific features (like FEATURE_LCD FEATURE_WPM_POT keyer_features_and_options.h file before uploading the code to your hardware. Isolation: A simple piezo element can be wired directly

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 Isolation: Most basic builds use the or Arduino

The input section connects your Morse code paddles (dit and dah) or a straight key to the Arduino.

You can find Gerber files for these in the k3ng_keyer/hardware/PCB directory of the official repository.

Download the source code from the official . Open the project in the Arduino IDE. Navigate to the keyer_features_and_options.h tab.