K3ng Keyer Schematic

Unlike rigid, commercial integrated circuits (ICs), the K3NG keyer is software-defined. By modifying a single configuration file ( keyer_features_and_options.h ), you can enable or disable hundreds of features.

. Developed by Anthony Good (K3NG), this Arduino-based project has evolved into a comprehensive ecosystem of CW (Continuous Wave) tools, from basic Iambic keying to complex PC interfacing via WinKey emulation. 🛠️ The Core Hardware Concept k3ng keyer schematic

Solder two 4.7k resistors from pins 2 and 3 to +5V. Solder your left paddle wire to Pin 2. Right paddle to Pin 3. Unlike rigid, commercial integrated circuits (ICs), the K3NG

A few common pitfalls and their solutions: Developed by Anthony Good (K3NG), this Arduino-based project

In the world of amateur radio, few open‑source projects have captured the imagination of CW operators quite like the K3NG Arduino‑based CW (Morse Code) keyer. Conceived by Anthony Good (K3NG), this feature‑rich electronic keyer rivals commercial units that often sell for many times its cost, while offering a level of flexibility and customization that is rare in the hobby. Whether you are a seasoned contester, a QRP homebrewer, or a Morse code novice, the K3NG keyer can be tailored to fit your exact needs.

Additionally, the has user-contributed schematics for specialized builds (e.g., portable keyer with Li-Ion charging circuit).

The power supply section of the schematic can range from a simple USB cable (if you use an Arduino with a built‑in USB port) to a more sophisticated external regulator. For projects that need to run from a 12 V station supply, many schematics include a (e.g., the Mini‑360 module) to produce a clean 5 V for the Arduino and any added logic. Alternatively, you can power the keyer directly from the transceiver’s internal 8‑10 V auxiliary supply.