Solder Fume Extractor - Battery + USB

Description

I solder enough that it is well past time I invested in a fume extractor for my bench. Through various jobs I've had the ability to work with several fume extractor solutions, none of which fit what I wanted. Existing fume extractors are generally at least two of the following:

-Physically Large
-Noisy
-Cable too short

This project addresses all three of the above by using a small off the shelf 80mm PC fan paired with an 18650 and control board. Some of the features include:

-Power selectable from USB or on-board 18650
-Speed control via potentiometer
-Automatic low battery cut-off
-Built in battery charger via USB
-Standard 4pin fan header
-Low battery indicator

Paired with a good quality battery and fan, over 12 hour continuous battery life at full fan speed which allows you to place it anywhere on your bench with no additional wire clutter. Once it dies, you can plug it into any micro USB plug and continue using the fume extractor as it charges.

Files

CAD.zip

DWG and STEP

x-zip-compressed - 1.36 MB - 01/27/2018 at 06:11

Download

BOM.xlsx

Bill Of Materials

sheet - 11.37 kB - 01/16/2018 at 03:44

Download

Schematic.pdf

Adobe Portable Document Format - 24.99 kB - 01/16/2018 at 03:44

Preview

Project Logs

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First Revision!
embeddedn8 • 01/16/2018 at 03:52 • 0 comments
After building the first revision, there are several mechanical and footprint issues to be addressed in rev 2. There are no electrical issues so the schematic will remain unchanged.
I've verified the following features of the design:
- Power over USB
- Battery Charging over USB
- Under Voltage battery cutoff
- Battery Charging
- PWM fan control at all speeds
There is a slight issue with the battery dimensions such that the battery contacts the work table rather than the edge of the PCB as intended. In the rev 2 files the board has been extended 2mm to remedy this.
In order to create a stable stand, I've used one populated PCB along with one blank PCB to hold the fume extractor upright.
Rev 2 has no additional features to rev 1, some features which may be implemented later include:
1. Smaller potentiometer, current one is very tall
2. LED to indicate power is on, it's so quiet it's easy to forget
3. Higher power charging
4. Support for larger and smaller fans

View project log

Discussions

k1200s wrote 02/25/2019 at 20:11

Can you please share the sch/gerber files of the PCB? I'm interested in making this project. Thanks!

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cvdbout wrote 03/27/2018 at 11:28

Just built this last night, there were a couple of problems. Q1 (p fet according to BOM) will only work when gate is shorted to drain, and r10 and r12 needed swapped around on the pcb for it to boost to 12v. Other than that, works great!

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David wrote 02/24/2018 at 16:25

Very nice project. Will build a similar one for myself.

Just one thing: Have you checked if your Battery protection circuit is working? I worry it will never cut off the load, since the APX810 is not low-active as proposed by the schematic. But than it also has a push-pull output and I'm wondering why it is working at all...Is Q1 fully on under normal operation?

Where am I wrong?

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Philip Ian Haasnoot wrote 02/05/2018 at 19:25

You might want to think of adding this to your BOM. it's an 80mm fan cover with 30ppi filter, you can swap the filter media out for a carbon impregnated sheet for better fume handling.

Great build!

https://www.mouser.com/ProductDetail/Qualtek/09325-F-30?qs=sGAEpiMZZMup2DON%252biRg9JYQeP2B2xODdV1kUZf9fZk%3d

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embeddedn8 wrote 02/06/2018 at 05:29

Thank you! I'm currently using sheets of active carbon filter you can buy from ebay. Had not found a reasonably priced filter for 80mm fans. This one is also thinner which should improve airflow from the ones I'm currently using. Cheers!

Are you sure? yes | no

Dan Maloney wrote 01/28/2018 at 21:55

Good looking build, I might have to build one for myself. Thanks for submitting it to the tip line. I wrote it up for the blog and it should post soon. Keep us posted on developments.

Are you sure? yes | no

cvdbout wrote 01/28/2018 at 01:50

I'm also having problems with GERBV having issues with the drills - GERBV and OshPark just show a blank layer with circles grouped together on the bottom left

Are you sure? yes | no

embeddedn8 wrote 01/28/2018 at 02:28

I fixed this issue about 18 hours ago and confirmed they worked with OSHPark as did the other gentleman. Can you confirm that the date on the .zip you're downloading is 1/27 and you're not uploading the wrong .zip?

Are you sure? yes | no

cvdbout wrote 01/28/2018 at 17:52

I've redownloaded the zip from above, uploaded to oshpark, and the drills are the same. When I opened the zip file, the files are all dated 15th.

Are you sure? yes | no

embeddedn8 wrote 01/29/2018 at 01:13

Not sure what to tell you. If the files are dated the 15th then that will happen with most boardhouses in the U.S.. Refresh the page and make sure you've deleted the old .zip you have?

Are you sure? yes | no

cvdbout wrote 01/29/2018 at 17:24

No matter how many times I download, files always say 15th, even from computer that has never been on this webpage. Someone on slack sent me his version which works. Not sure if download region matters, but I've got it now. Thanks

Are you sure? yes | no

NobodyYouKnow wrote 01/24/2018 at 21:37

Hi Nate. First off, nice project. I definitely will be building this one.

Could you have a look at the drill file in your Gerbers ("FumeExtractor80.TXT", I believe). It seems to render strangely.

Thanks!

Are you sure? yes | no

embeddedn8 wrote 01/24/2018 at 21:55

Thanks! I suspect the file you're looking for is FumeExtractor.DRR in that folder which is the NC Drill file. Let me know if that's not what you were looking for.

Are you sure? yes | no

NobodyYouKnow wrote 01/25/2018 at 21:55

Curious. When I try to open the DRR (drill report?) it in GERBV it tells me it is an invalid file. Oshpark also has problems with it. Can you try submitting your Gerber files to Oshpark as a shared project? Perhaps I am doing something wrong. Thanks!

Are you sure? yes | no

embeddedn8 wrote 01/25/2018 at 22:18

This is an issue with how OSH park requires their files submitted. I've re-exported them to comply with the OSH park format.

Are you sure? yes | no

Balu wrote 01/24/2018 at 20:36

Great idea, but instead of only sucking the fumes away from you and basically spread them in the room, you should add an active carbon filter.

Are you sure? yes | no

embeddedn8 wrote 01/24/2018 at 21:11

You are correct! Filters are currently on their way from China but even dispersing them is much better than straight up the nose.

Are you sure? yes | no

flackmonkey wrote 01/24/2018 at 18:45

Nice job on the project. You can put me down for a couple also if you are planning on selling them as a kit. Otherwise I will be sending boards files out to be made

Are you sure? yes | no

embeddedn8 wrote 01/24/2018 at 20:31

I do believe I'll order a number of extras to provide as a kit in the near future and will update this project accordingly!

Are you sure? yes | no

Alex Rich wrote 01/24/2018 at 18:34

this is really nice, you thinking about selling this / have you priced it out yet? there are no fume extractors for sale on tindie as of now.

Are you sure? yes | no

Alex Rich wrote 01/24/2018 at 18:48

I could see making a bracket to attach it to back jaws of my #Stickvise - low profile soldering vise so your fume extraction follows the PCB vise around.

Are you sure? yes | no

embeddedn8 wrote 01/24/2018 at 20:30

Hi Alex, I did not intend to sell this but I've received a dozen or so comments asking this. I'm investigating now if there's enough interest as is or make a universal version capable of 40, 80 or 120 mm fans. There are several locations which could facilitate mounting to other hardware such as your vise.

Are you sure? yes | no

Alex Rich wrote 01/25/2018 at 15:32

@Nate when you're ready post a CAD file of the PCBs in addition to just gerbers, maybe I or someone else will take a crack at a case design.

Are you sure? yes | no

embeddedn8 wrote 01/27/2018 at 06:11

DWG and STEP files added

Are you sure? yes | no

Makerfabs wrote 01/20/2018 at 04:11

good mechanical design..

Are you sure? yes | no

Solder Fume Extractor - Battery + USB

Description

Files

CAD.zip

BOM.xlsx

Schematic.pdf

Project Logs

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First Revision!

Discussions

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Solder Fume Extractor - Battery + USB

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Description

Files

CAD.zip

BOM.xlsx

Schematic.pdf

Project Logs Collapse

First Revision!

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Discussions

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