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Relay Hacks |
 | Internet Enabled Pet Feeder
Learn how to build an internet enabled pet feeder with streaming video. Now you can feed your pet from work or on vacation directly from your computer or phone. The whole system is fairly simple and is controlled by the status LED on a Cisco... |
 | Build a Giant VU Meter Using Light Bulbs
Basically, a VU Meter measures loudness (volume units) of an audio signal. But this blinking VU meter project catches the eye more than the ear. The construction of the VU meter using 12 flashing bulbs is relatively simple. At the heart is a 12... |
 | Relay Tutorial: Control AC Outlets & Machines
Learn to control the power to a normal AC outlet using 5 volts DC. When dealing with low voltage electronics such as iPods or cell phones, it may seem hard to make the jump to AC powered, high voltage appliances and machines.  For... |
