January 2015
Intermediate to advanced
116 pages
6h 1m
English
Can’t hear the door? Hack a wireless doorbell to turn on a light too.

» Plug-in wireless doorbell, AC powered
» Extension cord
» Light socket
» Light bulb, low-wattage CFL
» Wire nuts, twist-on
» Relay, 12V solid state
» Quick-disconnect connectors
» Switches, sliding (2)
» 555 timer IC
» Resistors: 1kΩ (1), 100kΩ (1)
» Capacitors: 330μF (1), 100μF (1)
» Printed circuit board
» Jumper wires
» Heat-shrink tubing
» Project enclosure
» Screwdriver
» Soldering iron and solder
» Knife
» Wire cutters/strippers
» Hot glue gun (optional) ...
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