Followers of alternative energy technology will remember how earlier in the year a battery container at Tesla’s Megapack Australian battery grid storage plant caught fire. Lithium ion batteries are not …read more (https://hackaday.com/2021/09/28/a-coolant-leak-the-likely-culprit-for-aussie-tesla-battery-bank-fire/)

Excel Ray Tracing with Help from C
https://hackaday.com/2021/09/28/excel-ray-tracing-with-help-from-c/

It isn’t news that [s0lly] likes to do ray tracing using Microsoft Excel. However, he recently updated his set up to use functions in a C XLL — a DLL, …read more (https://hackaday.com/2021/09/28/excel-ray-tracing-with-help-from-c/)

Sew-able Carbon Nanotube Thread Could Spin a Lot of Awesome
https://hackaday.com/2021/09/28/sew-able-carbon-nanotube-thread-could-spin-a-lot-of-awesome/

Plenty of people just plain dislike wearing jewelry, even (or especially) smart watches. Nevertheless, they’d like to have biofeedback like everybody else. Well, we watch-less ones have something to look …read more (https://hackaday.com/2021/09/28/sew-able-carbon-nanotube-thread-could-spin-a-lot-of-awesome/)

Is Your Movie too Loud? Can’t Hear the Dialogue? This Circuit can Help.
https://hackaday.com/2021/09/29/is-your-movie-too-loud-cant-hear-the-dialogue-this-circuit-can-help/

Everyone loves watching movies, that is, so long as you can hear what the characters on screen are saying. [GreatScott] found this second part difficult while watching through BladeRunner 2049, …read more (https://hackaday.com/2021/09/29/is-your-movie-too-loud-cant-hear-the-dialogue-this-circuit-can-help/)

BFree Brings Intermittent Computing To Python
https://hackaday.com/2021/09/29/bfree-brings-intermittent-computing-to-python/

Generally speaking, we like our computing devices to remain on and active the whole time we’re using them. But there are situations, such as off-grid devices that run on small …read more (https://hackaday.com/2021/09/29/bfree-brings-intermittent-computing-to-python/)

Teardown: Sling Adapter
https://hackaday.com/2021/09/29/teardown-sling-adapter/

The consumer electronics space is always in a state of flux, but perhaps nowhere is this more evident than with entertainment equipment. In the span of just a few decades …read more (https://hackaday.com/2021/09/29/teardown-sling-adapter/)

Plotting to Restore a r0tring CS-50
https://hackaday.com/2021/09/29/plotting-to-restore-a-r0tring-cs-50/

If you’re of a certain vintage and have ever done any technical drawing, chances are good that you used a r0tring of some kind, be it pencil or pen. Well, …read more (https://hackaday.com/2021/09/29/plotting-to-restore-a-r0tring-cs-50/)

101 Uses for an Everready — Flashlight History
https://hackaday.com/2021/09/29/101-uses-for-an-everready-flashlight-history/