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Solder Sniffer 9000

A DIY solder fume extractor for 80mm psu fans. Has built in charger to run off 18650 batteries.

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It chops, it dices, it sucks, it blows, it's the Solder Sniffer 9000! After a recent move I was in need of a more portable solder fume extractor. Previously I was using a PC PSU hooked up to a small 80mm fan to suck away solder fumes. I thought it would be neat to make a portable sucker that could be recharged with the millions of micro USB cables I have lying around. Thus the Solder Sniffer 9000 was born! This project is built around an 80mm PSU fan. I chose this type and size fan because that's what I have laying around. I figured it'd be great if I could recycle some of these fans. The main PCB attaches to one side of the fan, via the fan mounting holes. For power I'm using a protected 18650 lithium cell. I'm using the Microchip MCP73831 charge controller to charge the battery via the Micro USB port. The battery is then boosted to the 12 volts required by the fan through use of the Semtech SC4503 step up regulator.

Adobe Portable Document Format - 44.83 kB - 05/22/2017 at 15:44

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Matias N. wrote 06/07/2017 at 21:26 point

maybe you can couple this with a smoke detector and have it turn on and off automatically

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Jon Thomasson wrote 06/07/2017 at 23:22 point

Thanks, that's a cool idea!

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K.C. Lee wrote 06/08/2017 at 00:45 point

It would work if the smoke detector is an optical type not ionization type.

https://en.wikipedia.org/wiki/Smoke_detector#Photoelectric

May be easier to have a microswitch / magnet reed switch to detect when the soldering iron is off the holder and use that to switch on the fan.

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