3D Printed Solder Fume Extractor (HEPA Filter)
Description
Simple solder fume extractor using a HEPA filter rather than an activated carbon. Why HEPA, see: https://www.sentryair.com/blog/solder-fume-control/comparing-solder-fume-extractors-its-all-about-the-filter/ Here is a GIF of it in operation (as well as a rough schematic): https://imgur.com/a/SEjbnkx Also this is using a variable speed fan which is controlled by an ATtiny13. If you stay with this MCU you will have to write some efficient code to have both ADC & PWM, so either: 1. Use this tutorial: https://adnbr.co.uk/articles/adc-and-pwm-basics 2. Change MCU to something like an ATtiny45 or better 3. OR if you are a madman you could just use a simple 555 timer circuit Part list: 1. x1 HEPA filter, 115x115x12mm, I got mine from: https://goo.gl/GgAMQW 2. x1 High CFM fan, similar to DELTA PFB1212GHE 3. x1 Fuse holder, something like https://goo.gl/aDMRGY 4. x1 5x20mm 1A fuse 5. x1 Power jack, something like https://goo.gl/KA4by6 6. x1 Power switch, something like https://goo.gl/qEp3Jj 7. x1 10K potentiometer, something like https://goo.gl/jgKCEK 8. x1 ATtiny13 or similar 9. x1 10K resistor 10. x1 LM7805 or similar 11. x2 10uF electrolytic capacitor, at least 25V 12. x1 100nF ceramic capacitor, at least 15V 13. A bunch of wire and a single piece of veroboard 14. UPDATE: 130x130x10mm activated carbon filter, like https://goo.gl/SwdERG UPDATE: "Carbon-filter-holder_v10a.STL" houses a carbon activated filter, so not the extractor has 2 step filtering
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