quiescentcurrent

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This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 2 points 1 month ago

I have one of those, it may pass as the great grandfather ;)

This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 1 points 1 month ago

They actually renamed the types which makes everything even more confusing

This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 2 points 1 month ago

Yeah, unfortunately fast data and fast charging are two independent characteristics...

This little gadget to find out which type of USB-C cable you have in c/[email protected]
[–] [email protected] 1 points 1 month ago

The thing is from Austria though?

350
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 1 month 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 1 month 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?

184
This little gadget to find out which type of USB-C cable you have (discuss.tchncs.de)
submitted 1 month ago* (last edited 1 month ago) by [email protected] to c/[email protected]
26 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

This tool for finding bad USB-C cables in c/[email protected]
[–] [email protected] 18 points 10 months ago (1 children)

Not sure what else, but the thing can tell you if a cable is USB2.0, USB3.0/3.1/.. or just for charging.

249
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/

Vintage Mac Community Begs Manufacturers for New Supply of Rare Dongle as Resellers Charge $250 in c/[email protected]
[–] [email protected] 14 points 1 year ago

I could design and produce a small batch of those adaptors.

Would anyone be interested in getting a prototype and helping to test it?

Shift register missing bits in c/[email protected]
[–] [email protected] 1 points 1 year ago

You're 100% right, I've lost 'i' somewhere in my debugging process

byte upper_byte = input_bin >> (8+i) ; byte lower_byte = (input_bin >> i) & 0x00FF;

Shift register missing bits in c/[email protected]
[–] [email protected] 2 points 1 year ago

Good idea, I've tried usleep after all lines, but no change..

Shift register missing bits in c/[email protected]
[–] [email protected] 1 points 1 year ago

You're probably right, but that should only change the order of the outputs right?

14
Shift register missing bits (discuss.tchncs.de)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
15 comments fedilink
 

Hey friends,

I have a two daisy chained shift registers (74AHC595) which are controlled via an ESP32. I want to set one output to high at a time before switching to the next.

The code seems to work, but the outputs O_9 and O_10 are not staying high (zoom) after setting them, whereas all the other ones are working fine. This is the used code snipped:

pinMode(SHIFT_OUT_DATA, OUTPUT);
pinMode(SHIFT_OUT_CLK, OUTPUT);
pinMode(SHIFT_OUT_N_EN, OUTPUT);
pinMode(SHIFT_OUT_LATCH, OUTPUT);

digitalWrite(SHIFT_OUT_N_EN, LOW);

uint16_t input_bin = 0b1000000000000000;

for(int i=0; i<17; i++){

    byte upper_byte = input_bin >> 8;
    byte lower_byte = input_bin & 0x00FF;

    digitalWrite(SHIFT_OUT_LATCH, LOW);
    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, lower_byte);
    shiftDataOut(SHIFT_OUT_DATA, SHIFT_OUT_CLK, MSBFIRST, upper_byte);
    usleep(10);
    digitalWrite(SHIFT_OUT_LATCH, HIGH);

    delay(10)
    input_bin = input_bin>>1;
}

Is there anything I'm doing wrong, or any idea on where the problem may lie? I've already tried looking for shorts and other error sources, but the design was manufactured on a PCB and no assembly issues are noticeable.

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