"Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software.
It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments." - From www.arduino.cc
This is a simple CW keyer to be used on a hamradio tranciever that doesn't have keyer function.
Two CQ messages can be programmed for simple transmission.
Programmed for DFRobot LCD Shield (but can ofcourse be changed to fit other LCD shields).
This i a small program that can be used as a repeater logic. It waits for a signal on one pin,
i.e. from a 1750hz decoder. Then starts transmitting ID by morse code. At the same time sending
signal out on a PTT pin. Squelch from radio must be connected to activity pin so the clock resets.
Morse code is transmitted on a digital pin out and also as a square wave tone on another pin.
This is a small program that can be used as a part of a bigger program, or standalone as a radio beacon.
It transmits a specified text in morse code. Both through a digital output and/or as a square wave.