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
Archive for the ‘LED’ Category:
2025-08-10 Night Light Wastes Power Shunting Current From LEDs
This is the comment I left in Big Clive’s channel video. “I think this shunting current away from the LEDs is deceptive and fraudulent. They should be required to tell this in the instructions. In the US there are regulations governing vampire devices such as the AC adapters and their efficiency levels. Since they’re on
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2025-01-01 QR Codes Explained, Plus Bar Codes
Derek Veritasium shows us how QR codes work. He pronounces the a in Veritasium like the a in tassel. https://www.facebook.com/reel/2506467346230147?mibextid=9drbnH&s=yWDuG2&fs=e
2024-10-12 First Ever Images Of Electric Charges Across Semiconductor Materials
Researchers capture first ever images of electric charges across summit conductor materials within a solar cell. Times in picoseconds. https://pv-magazine-usa.com/2024/10/11/researchers-capture-first-ever-images-of-electric-charges-across-semiconductor-materials-within-a-solar-cell/t
2024-09-20 Simple 1 Digit Counter, IR Beam Break
This short uses a CD4026, a 7 segment display, 9V battery, some resistors, an IR LED and a CdS photocell or phototransistor. Break the IR beam and the display advances to the next digit. https://www.facebook.com/reel/525596709839365?mibextid=9drbnH
2024-06-09 SMD LEDs Identification
Nice to know how to ID the polarity of SMD LEDs. https://lighthouseleds.com/blog/polarity-guide-of-0402-0603-0805-1206-and-most-all-smd-leds.html
2024-03-11 Flexible LED Filaments
Some information on what current and resistors to use. The LEDs are all in parallel and need about 3 Volts, current limited with a resistor. https://www.facebook.com/reel/909951727389682?mibextid=9drbnH&s=yWDuG2&fs=e
2024-03-09 Big Clive’s Old Tungsten Roadwork Beacon – Barricade Flasher
I built this “tungsten roadwork beacon” as Clive calls it, using the parts given in my schematic (photo below). I didn’t have a 6V, 90 mA lamp, so I simulated it by using three 20 ohm, 1/4 Watt resistors in series, which gives 60 ohms and 100 mA load with 6VDC. For an indicator I
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2024-04-06 The Flexible LED Filament
This YouTube short demos a flexible LED filament and shows how to configure it for 5VDC.
2024-03-03 Video Game Uses Switch Port Lights
Someone must’ve written a program that runs on a switch and plays a video game like PacMan using the port lights. https://www.facebook.com/reel/236966269492966?mibextid=9drbnH&s=yWDuG2&fs=e
