K3ng Keyer Schematic !!install!!

This tells you: When D10 goes HIGH, Q1 turns ON, collector pulls to GND, output keys the transmitter.

Ideal for basic setups with limited features due to memory constraints. k3ng keyer schematic

The K3NG keyer is not a single, fixed schematic but a flexible blueprint that adapts to the user's chosen hardware: Getting Started with the K3NG Arduino CW Keyer 1 This tells you: When D10 goes HIGH, Q1

Supports Iambic A and B, Ultimatic, Bug mode, and Straight keying. The is widely considered the "Swiss Army Knife"

The is widely considered the "Swiss Army Knife" of Morse code keyers. Developed by Anthony Good (K3NG), this open-source, Arduino-based project provides a feature set that rivals or exceeds professional commercial units costing significantly more. Core Features and Capabilities

The authoritative source is the :

| Arduino Pin | Function | Schematic Detail | |-------------|------------------------|-------------------------------------------------| | D2 | Paddle Dit | 10k pull-up + 1N4148 to +5V | | D3 | Paddle Dah | Same as D2 | | D4 | LCD RS (if parallel) | Direct connection | | D5 | LCD Enable | Direct connection | | D6 | LCD D4 | Direct | | D7 | LCD D5 | Direct | | D8 | LCD D6 / PS/2 Clock | Shared? Check compile options | | D9 | LCD D7 / PS/2 Data | Shared | | D10 | Key Output (transistor)| 1k base resistor + 2N2222 + 1N4007 | | D11 | Sidetone out | To LM386 input (via 10k pot) | | D12 | PTT output | Second transistor stage | | D13 | Status LED (built-in) | Optional | | A0 | Speed pot | 10k pot + 0.1µF cap | | A1 | Command pot (mode) | Optional | | A4 (SDA) | I2C LCD / Rotary Encoder| 4.7k pull-ups | | A5 (SCL) | I2C LCD / Rotary Encoder| 4.7k pull-ups |