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This tool for finding bad USB-C cables
hackaday.com USB-C Cable Tester Is Compact And Affordable

We’ve all been bitten before by USB cables which were flaky, built for only charging, or just plain broken. With the increased conductor count and complexity of USB Type C, there are many mor…

USB-C Cable Tester Is Compact And Affordable

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/

32
Shift register missing bits

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.

15
InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)QU
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