The Tworse Key is a standalone device that connects through a standard LAN cable, the Morse signals are decoded by the built-in Arduino Ethernet board, which delivers the final message though the Twitter API.
Morse Key (search on Ebay) Arduino Ethernet board (or alternatively an Arduino plus Ethernet shield)
piezo buzzer for auditory feedback
50 Ohm resistor to connect the buzzer
RGB LED (common anode) for visual feedback
10k Ohm resistor to connect the LED (reducing its brightness)
a RJ45 ethernet cable
9V Battery + connector (for internal use)
5V power supply (for external use)
USB FTDI cable to program the Arduino Ethernet board
a wooden box to mount the electronics and Morse key
various cables and soldering equipment
AA9PW HamMorse: Morse code practice on the iPhone
Features of Ham Morse v1.450 (October 16th, 2014)
Ham Morse allows you to practice morse code on your iPhone, iPad or iPod Touch. It is designed particularly for Ham radio operators and others who wish...
“Side Swiper Chrome” key
All I1QOD’s keys are strictly hand crafted using high quality materials.
Sideswiper Chrome key:
Materials used: Brass for the body - Massive silver for the contacts -
»Tone Tube« CW Code Practice Oscillator Code Practice Oscillator »Tone Tube« (TT). Made in Germany.
Palm Radio had several inquiries about a small tone generator in the past, so the »Tone Tube« has been developed recently...