Keyers
An open source Arduino based CW (Morse Code) keyer with a lot of features and flexibility, rivaling commercial keyers which often cost significantly more.
Simple PIC Keyer from K3NG.
W8BH Morse Tutor Chez VE6LK Kits
Very similar to the Morserino below.
A multi-functional Morse device (Keyer, Trainer, Decoder, even Transceiver etc.). It is ideal for learning and practicing Morse code, useful for everybody from beginner to high-speed pro.
A morse code keyer running on Raspberry Pi.
A little box that you can plug a key and headphones into. It Wifi connects to your phone hotspot. It has a channel selector. Dial up a channel and tx/rx CW on that channel. That's it.
This is an internet transceiver for CW that you can take with you. It aims to be more like a radio than a computer.
Enables you to get a wide view of the different keying modes, to compare their proper logic and accurate timing with the logic and timing of other keyers
YACK - Yet an other CW Keyer Source Files
YACK is a universal CW keyer library and application for the AVR architecture.
This is a tiny, cheap, and open source CW keyer. (ATtiny*5)
This is an iambic keyer based upon the Arduino UNO platform. It provides a means to generate audio sidetone for the purpose of implementing modulated FM that can be used on 2M repeaters.
Raspberry Pi bareback LF/MF/HF/VHF CW (Morse code) transmitter
Makes a very simple Morse Code transmitter from your RasberryPi by connecting GPIO port 4 to Antenna (and LPF). Operates on LF, MF, HF and VHF bands from 0 to 250 MHz.
Compatible with the original Raspberry Pi, the Raspberry Pi 2/3, and the Pi Zero.
This is an "Accu-Keyer" (WB4VVF) Clone for the Arduino (or ATTiny45 or 85)
Joystick becomes a CW key.
A reboot of the original DigiKeyer.