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Note: This is part 2 of a two-part project. For first part, see here: Building a Low Cost Solder Fume Extractor – Part 1   Introduction This project concerns a solder fume extractor that does as the title suggests, and sucks up solder fumes from soldering irons : ) It consists of a box containing multiple fans and filters, and a hose attachment with a funnel on the ingress side, and an egress side with the control/connectors. There is also an 'Aux' port, for additions such as LED la ...
This post documents the first working Version 1.3 of an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. The development to date is documented in the links at the bottom of this post.  Version 1.3 contains numerous upgrades and suggestions from Shabaz, Gene Breniman, John Wiltrout, and Jon Clift to which I am indebted.   It's Alive! Those who were following the project may have given up it has been so long since the last post.  The reas ...

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