What is the point of reviewing a cheap timer module, especially if it is based on the ubiquitous 555 timer chip? Recently I got an ‘updated’ version of the common 555 timer relay module. This time it ...
My understanding, all USB ports provide 5v. I am trying to get voltage from TV USB port to power an input switch relay box (would turn on when TV turns on from standby and starts powering the USB ...
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