I bought two of these motion sensing LED lights for my hallway. They have a rechargeable cell that is charged through a micro USB port. To see one inside watch big Clive’s YouTube video – the ebay link to buy them is in his description. The charge lasts for more than a week with frequent
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I’ve been thinking about this for awhile. Let’s say I have a switch, for example a thermal switch that only has contacts that are NC (normally closed) until a certain temperature is reached. At that point, it changes to open, interrupting the circuit. But the input to my controller senses NO (normally open) switch contacts
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