Just wanting to check if the following is OK to do, or if I'm likely to melt/explode something/someone. Have not used a relay before! I want to power a tiny 5v fan, in a cabinet. When the door is closed the fan is on, but turns off while the door is open. The problem is the fan draws 150ma. I figu…

Basic question, usb cable, relay, and 5v fan

Paul_B September 27, 2021, 5:24pm 10

"Vin" on a Nano goes to the input of the regulator. Nothing to do with USB.

Still, if you imagine otherwise ...

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