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Archive for the ‘Building projects and kits’ Category:
2025-10-06 Schematic Of On-Off Touch Switch, Latching
This circuit uses four BJTs – 3 NPN and 1 PNP high current to drive the load. It has two touch pads, one for On and one for Off. I don’t see any information about the power supply voltage or load current. Some maximum voltage and current should be given for the circuit as shown.
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2025-09-14 MESHtastic Bill Of Materials
What https://m.facebook.com/groups/276059605530869/permalink/654477951022364/?ref=share&mibextid=NOb6eG
2025-09-13 Every School Should Have A “Fix-it Lab” Where Students Learn To Repair Their Clothes, Bikes And Electronics.
“”Every school should have a “fix-it lab” where students learn to repair their clothes, bikes and electronics. We should grow up knowing that not everything is disposable, that care and repair are part of living well on this planet.”” https://www.facebook.com/reel/1280502713546957/?mibextid=9drbnH&s=yWDuG2&fs=e
2025-08-27 EVs Are Always Cleaner No Matter Where You Live
EV myth, busted. https://www.facebook.com/100050508698574/posts/pfbid0NDSFxzT27mYj3NXVdxkRVPPqLkWjU8MZN3GA7qd4iMFkxSBN2U4QdE5hYfs8yb6sl/?mibextid=6yaNxA
2025-08-26 MOSFET Tester Is Not So Good
The average hobbyist should not rely on this tester because of the deficiencies listed below. Instead he or she should buy a transistor tester that can analyze the device and tell what the pin out is and polarity, N-channel or P-channel. Also it can tell if the device is a MOSFET or a regular power
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2025-08-12 DIY Rocket Engine!
OMG! https://www.facebook.com/TheBackyardScientistOfficial/videos/970125545097522/?mibextid=9drbnH&s=yWDuG2&fs=e Here’s how to make rocket fuel https://www.facebook.com/TheKingOfRandom/videos/3916373305264694/?mibextid=9drbnH&s=yWDuG2&fs=e
2025-08-03 Walkie-textie Project
Uses a 12 key keyboard and texts like an old Nokia phone with multiple keypresses. http://www.technoblogy.com/show?2AON&fbclid=IwQ0xDSwL88ShjbGNrAvzr1WV4dG4DYWVtAjExAAEeX19OxuYe1QO8mrox71F6Zl_KCUppukTfJn3iSrHyEVT51xLwOmz2jhPHLKY_aem_is4HJCST113TNXDXWaTXGw
2025-07-10 HX-6B AM Radio Kit Assembly
Details on assembling this AM radio kit that’s mostly in Chinese. Note that “http:” is not secure so it might need https: instead. http://www.radioboatanchorblog.com/blog/hx-6b-chinese-radio-kit-build?fbclid=IwY2xjawLcfHdleHRuA2FlbQIxMQABHkIPEJW7iGvqm7ooztFySxe38gLI2guH4ymbV-sXwPbOoqyIxvYFQxL0J5j4_aem_Msqfjb36T0JDEY92jt3izQ
2025-05-13 How To Understand Any Electronic Circuit
Book Learn to Build Electronics Projects https://www.facebook.com/100064561517360/posts/pfbid02qmmukKwJbxWMs6HVLU11zNM5xfxdCX7nczjZdejgjrdGzsVs4RV8A7mNNgbTmJnAl/?mibextid=9drbnH&s=yWDuG2&fs=e
