Reddit refuge, escentric engineer and serial hobbyist.

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Joined 2 years ago
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Cake day: June 10th, 2023

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  • I’ve owned and deployed a lot of pi, every model, and in my experience when I have similar instability as you described its related to the sdcard. Either the sdcard itself or the tray soldered to the pi. I had one pi that would corrupt the sdcard without fail after 2 months and I played with bending the sdcard metal tray inward a little to help press the card better into the contacts and the problem went away. Try fiddling with the sdcard holder or different sdcards.






  • I know way too much about the propagation of plasma in fluorescent lighting. When you first hit a fluorescent tube with high voltage you need some cosmic radiation to rip off the first barium ion off the cathode which causes a tiny little lightning strike of plasma that skitters across the inner surface of the tube. Once it makes its way across the length of the tube to the anode you now have a conductive path. This path then grows tremendously until it envelopes the whole cross section starting from the anode and works it’s way back to the cathode until the whole tube is filled with wonderful plasma that makes light when it excites the phosphor coating.