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Hello, I'm working on a little side project for my home thermostat. I recently bought a nest smart thermostat to replace my old "dumb" thermostat and ran into an issue with the wires. I don't have enough wires to accommodate all of the thermostat functions. Running new wiring is not an option...

Okay, so I am doing a stupid project. Lets say I have a small motor that I am going to be using as a generator. It can output up to 350w at 24vdc. I need something that can take ANY INPUT voltage dc and output it to 14.2v dc to charge a lead acid battery. I bought 2 boost converters off of ebay...

Hi! I Have a transformer that has a 0V 185V 220V 255V Marking on the primary side and 7.1V 0 7.1V and a low power 19V unfortunately i dont have a tester to check the transformer's 220v input and i dont wanna just plug it to mains because im pretty sure its gonna cause chaos, pls help! The...