The 433 MHz spectrum is a little bit of an oddball. It’s one of the few areas of the radio spectrum which is nearly universally unlicensed Outside of the US, it’s an open playground for devices that ...
Today we are going to explain about a simple circuit which is used to switch on/off any electrical device remotely through a relay using the normal TV/VCR/VCP/VCD remote control unit. First of all, ...
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