quiescentcurrent

joined 2 years ago
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bro woke up as an april fools joke and chose violence in c/[email protected]
[–] [email protected] 1 points 1 day ago

That's actually a great video, no-ideal opamp characteristics have caused me a lot of headaches on multiple occasions in the past.

safe? in c/[email protected]
[–] [email protected] 15 points 2 months ago (1 children)

Then this is not safe.

The maximum charge voltage for a lithium cell is 4.2V while USB will provide 5V. It may work for a while, it may fail in a safe state or something gets hot and burns.

28
I never knew that USB-C extensions are not allowed for a reason (www.youtube.com)
 

There is a reason for USB-C extensions not to be part of the standard. They can be bothersome in the best case and dangerous in the worst.

1
This little gadget to find out which type of USB-C cable you have (discuss.tchncs.de)
 

cross-posted from: https://discuss.tchncs.de/post/22828099

USB was supposed to rule them all but it's now a mess of standards sharing the same connector. Different speeds, voltage, charging protocols, alt modes, even the number of pins used is variable.... For those asking, the thing is available on Kickstarter

This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 4 points 6 months ago (1 children)

Pretty much. I'm not even sure if regular USB ports can talk to pins individually, let alone test them for shorts.

This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 7 points 6 months ago (5 children)

Interesting, I just uploaded the .mp4 directly to lemmy and assumed this to be working. How else would you share a gif/short video?

140
This little gadget to find out which type of USB-C cable you have (discuss.tchncs.de)
submitted 6 months ago* (last edited 6 months ago) by [email protected] to c/[email protected]
25 comments fedilink
 

USB was supposed to rule them all but it's now a mess of standards sharing the same connector. Different speeds, voltage, charging protocols, alt modes, even the number of pins used is variable.... For those asking, the thing is available on Kickstarter

93
Review of a tester extracting the functionality of USB-C cables (www.getusb.info)
0
This tool for finding bad USB-C cables (hackaday.com)
 

EEVBlog also talked about this in a mailbag episode: https://www.youtube.com/watch?v=rEZQvSgdA2k&t=1839s

And they also have different cable versions available: https://caberqu.com/