This project was born during hard lockdown period. Forced to stay at home all day with room mates it's inevitable to have the TV on all the time, which can disturbs you if the audio volume is too high, especially at night when who watch the TV often falls asleep leaving it on (and suddenly wakes up with heart pounding when a promo with super-high audio level is showed). This simple project consists of a microphone, a RTC, and an IR receiver modules. At first you need to recorder the audio-lowering key from your TV remote, then you set a hour interval and an audio threshold. Finally, you just have to put the board under your tv with the IR led directed toward the TV receiver and microphone as close as possible to the speakers. After the setted hour, the circuit automatically lowers the audio volume everytime it exceeds the threshold, so you can sleep smoothly on your couch and leave others sleep ;).
TV audio damper (prototype)
Automatically lowers your TV audio output after a programmable hour when it gets over a certain level.
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