K3ng Keyer Schematic -

Integrates with LCD, OLED, and TFT screens to display speed, settings, and transmitted text.

If you are planning to build this on a custom PCB, I can help you find popular, pre-designed PCBs or guide you on how to set up the schematic in software like KiCad. k3ng keyer schematic

When laying out your schematic on a breadboard or custom PCB, use this standard pin mapping guide for an ATmega328P (Nano/Uno): Component Feature Arduino Pin Pulls to GND when pressed Dah Input Pulls to GND when pressed Sidetone Out Outputs square wave audio TX Key Line Drives the transistor/optocoupler base PTT Line Push-To-Talk delay control (optional) Speed Wiper From 10k linear potentiometer Command Button Enters memory/configuration mode Advanced Schematic Additions Integrates with LCD, OLED, and TFT screens to