Category: reparatie
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Fixed: RC522 RFID reader not reading (some) cards (Part 1)
Some of the RC-522 RFID card reader modules that can be bought on ebay / aliexpress have a problem: they do not read all (types of) cards they should be able to read. In this blog post I want to explain how to recognize these faulty readers and how to fix them. (There is a…
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Opgelost: RC522 RFID lezer leest (sommige) kaarten niet. (Deel 1)
Ik heb recent een probleem ontdekt met de RC522 rfid kaartlezer modules die men op ebay / aliexpres en dergelijk kan kopen: ze lezen sommige kaarten niet. In deze blogpost wil ik uitleggen wat het probleem is, en hoe het opgelost kan worden, in de hoop dat mensen die hetzelfde probleem tegenkomen daar wat aan…
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Fine motor skills?
I did not know this was possible. The hollow core motors of a Cheerson CX-10 can actually be opened, and a new wire can be soldered to the brushes when the original one broke of. This started as a challenge, me stating it was impossible to open these motors without damaging them beyond repair and…
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Some short notes on the Lecroy9450 repair project
Because there is no big news yet, some short updates. – Claude Schwarz pointed me to the Yahoo user group “Lecroy Owners group”, they have design files for a HHZ406 replacement. (Made by Dieter Frieauff). So maybe the ext. trigger input can be repaired as well. – A service manual for this ‘scope (And others)…
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LeCroy 9450 oscilloscope repair
This was supposed to be an easy repair, and therefore not worth blogging about. But as it turns out, it might get interesting after all. (The ‘scope is not repaired yet) The “Leidse Makerspace” owns a LeCroy 9450 350Mhz DSO. When they moved to their new location I temporarily got this oscilloscope. Not just for…
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Hotglue reflow
Dit is hoe ik m’n iPAQ (h2200, h2210) z’n batterijklepje heb gerepareerd, met smeltlijm. Om de een of andere reden plakt hotglue beter met een dun laagje tussen de te verbinden delen, ipv een dikke laag. Door met m’n heteluchtsoldeerstation de hotglue (en de te verbinden delen) warm te maken kon ik er zo’n dun…
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Fixing a broken SD card slot.
Repair companies are completely right they don’t repair on this level of detail, but swap an entire board instead. Much easy-er. But I don’t have spare boards lying around and I like a challenge, so… A friend of mine had a defective digital camera, someone forced the sd card in the wrong way, with bent…