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Are you done for the night? Not if you’ve watched [0033mer]’s Simple Electronic Circuit Hacks video! You know just what to do. The ground pin of a LM7805 connects to the cathode of a TL431 ...

For example, one man's simple supermarket hack lets you access a trolley without needing a coin. It's useful to know given most people require a trolley to complete their food shop. And now ...