Hack a cheap remote light switch with an Arduino Leonardo
Arduino Team — November 27th, 2018
Chris Lovett used a cheap remote plug to control his Christmas lights; however, when the fob’s A53G 12V battery died, he decided to go a different direction. Rather than just replace the battery, he hooked up an Arduino Leonardo for complete lighting automation.
For this hack, he bypassed the onboard IC and instead sent a simulated signal produced by the Leonardo through the wireless transmitter. The appropriate signals were decoded by a logic analyzer, then sent using one output pin to power the transmitter and a second to output the correct pulses. Full automation was accomplished via a Python Script running on a computer to activate the Leonardo at sunset and sunrise.
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