Huh, I bought a decent desk LED lamp with sturdy metal leg and a main plastic case (for LEDs) made from a good plastic — and it worked at near three or four months. After that it suddenly refused to power on, while connected to the good source of 5V (lamp has USB cable, which was connected to the good power source).

Disassembled "controller" (on wire) and found that resistor R1 burned, LED on the another side of PCB is dead, and capacitor C1 is short curciuted. Changed it to the new capacitor, but it still has zero Ohms . So, looks like the unknown microchip U1 is dead, while it has 1 and 5 output short circuited. "Of course" unknown Chinese manufacturer carefully erased all the markings on the chip, lol.

So, this controller obviously is for trash bin. Fortunately, the main LEDs in the lamp are alive and possibly it could be fixed with a good power source or a good mono-colored LED line controller, which should know that 5V from USB — is not a reliable power source, so it could be sent directly to the inputs of microchip, lmao . Any high-voltage interference came via the wire connected to the bad controller (like original controller on this lamp) — will kill anything on the PCB.

#DIY #LED #electronics #fail

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Black and white photo of a broken LED controller for desk lamp. On the right side it has: pads for 5V, then two resistors: R1 and R2, capacitor C1 and unknown microchip U1 with carefully removed markings.

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Black and white photo of desk lamp LED controller. This is a top side of PCB with four buttons and one LED (dead).

My old laptop's replacement battery has attempted a self-ignition. I think it's time to start saving up for a new laptop. I'd love to have a #Framework 16. I just don't know if I can stand having a CPU with "AI" in it's name. A real mobile workstation would be sweet though. My current laptop can't play 4K video smoothly, lol.
It's possible if the #SteamFrame comes out first I might crack and get it instead. Running #ArchLinux on my face sounds like the apex.
#Computers #Thoughts #Fail #RMA

Quand la DGESCO (Direction générale de l'enseignement scolaire) nous envoie un sondage sans vérifier le code html 🤣
#html #fail #education

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Copie d'écran de l'onglet du sondage qui indique le titre "Ceci est un test de sondage long"

Quand tu utilise le premier résultat de recherche de ton moteur de recherche pour juste génèrer un simple QR code...

#QRCode #Fail

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Le scan d'un QR code d'une affiche renvoie vers un site qui affiche le message suivant en anglais "This QR code is deactivated for some reason. If you are the owner of this QR code, log in to activate it."