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Machinist

@Machinist@lemmy.world

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Small fan switch sanity check. (lemmy.world)

Circuit is for controlling the fan on a Raspberry Pi, just on/off according to temp, no PWM. Not sure about the diode as it has a .7V drop and it’s a tiny brushless DC motor. No markings on the fan so I measured the current with a multimeter when hooking it up to a USB charger. Circuit was adapted from here using what I have...

Machinist,
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Yah. I added it as the original didn’t have one. Think I should keep it?

Machinist,
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The board is built into the motor and should also add flyback protection, that’s why I’m not sure if I need the diode. Give it juice and it spins.

Machinist,
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Awesome. That agrees with what I calculated as well. I’m a jack when it comes to electronics.

Thank you much for the help!

Machinist,
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Will do.

Machinist,
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👍

Machinist,
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That’s what I figured as well, there’s some sort of board under the top of the housing. I’m going to leave the diode in.

I appreciate the advice!

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