Morse code can be sent using low power, equipment built from simple materials or even using mirrors or flashlights. Finally, Morse code is a very simple way to do covert communications.

[Dave Jones] from EEVBlog.com takes “Arduino fan boys” off the garden path getting down and dirty with different methods to capture, evaluate and retransmit IR remote control codes. Capturing ...

This cool system uses an Arduino board and home wiring to turn your local home telephone network into an intercom. When you take the phone off the hook it disconnects from the phone line and rings ...