#Murray-Smith #video about making a position sensor from #hoarding a mouse. #electronics
on 02026-08-24#Murray-Smith #video #toread on #DIY #manufacturing of metal-air #batteries
on 02026-01-14#video #toread by #Murray-Smith on magnesium-oxide #cements, specifically Sorel oxychloride cement #materials
on 02025-11-11#video on #Murray-Smith’s channel by his brother explaining that he has died, committing suicide a day before his last video posted.
on 02025-10-07#video #toread by #Murray-Smith about #3D-printing some sort of electric generator #mechanisms?
on 02025-09-06#video by #Murray-Smith about “game changer?” linear (or rather reciprocating) #switched-reluctance motors (or rather generators). Lots of talking-head filler, but at least a third actual information. But this isn’t actually a switched-reluctance design; it’s a permanent-magnet design! But with both the coil and the ring magnet fixed, coupled by a moving core. He said it took him two hours to make it from scratch, including the wood base I guess, which is sort of a game changer. He gets 600mV open-circuit voltage spinning it by hand and 40mA short-circuit current, so ≤24mW, which makes it less of a game changer since he’s exerting several watts of power to spin the crank. (He claims “It’s generating quite a lot of energy from something so trivial!” but according to his measurements it isn’t.)
on 02024-09-2210 uses for a microwave oven transformer: #hardware #hoarding #video by #Murray-Smith. Among other things he demonstrates welding six of them together to get a large motor stator. #toread
on 02024-04-06