I’m describing the Arduino relay driver I made to control my doorbell.
I read a great article from Maurice’s Hobby Robotics site: http://www.glacialwanderer.com/hobbyrobotics/?p=9
and the schematic I used is here: http://www.arduino.cc/playground/uploads/Learning/relays.pdf
View the code at: http://www.amazingknife.com/tag/doorbellcode
Be really careful around high voltage! Stay away from water, wear rubber soled shoes, don’t touch wires that make you part of the circuit, and don’t do any other unsafe activities!
Duration : 0:6:1