Quick and Simple Milliohmmeter

User [mircemk] presents his “MiliOhm Meter” project which you can build with an Arduino, a handful of common parts from your lab, and a cigar box.  It doesn’t get much simpler than this, folks.  While this is something you won’t be getting calibrated with NIST traceability, it looks like a …read more

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Bitbanging Qualcomm Charge Controllers

With more and more manufacturers moving to USB-C, it seems as though the trusty USB port is getting more and more entrenched. Not that that’s a bad thing, either; having a universal standard like this is great for simplicity and interconnectability. However, if you’re still stuck with USB 2.0 ports on your now completely obsolete one-year-old phone, there’s still some hope that you can at least get rapid charging. [hugatry] was able to manipulate Qualcomm’s rapid charging protocol to enable it to work with any device.

The protocol in question is supposed to work only on supported devices. Namely, anything …read more

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