Electrical and Computer Engineering

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Electrical and computer engineering (ECE) community, for professionals and learners. Discuss ECE related topics here, for instance digital design, signal processing, circuit analysis, electromagnetics, microelectronics, power electronics, RF electronics, etc.

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Analyzing USB (lemmy.world)

submitted 3 weeks ago* (last edited 3 weeks ago) by za_warudo_steve_freiheit@lemmy.world to c/ece@lemmy.world

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How do people use an oscilloscope to analyze USB packets and such? I saw a video by Ben Eater and the way he did it was by exposing the necessary wires of a USB cable and probing those. Is this standard or are there types out there that have this functionally built-in as some accessory or something?

Edit: logic analyzers are pretty interesting

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[–] emptiness@lemmy.blahaj.zone 1 points 3 weeks ago (1 children)

Does it have built-in USB decoding? If not then it’s not very practical tbh, but it could do low speed and full speed, with manual decoding. Not high speed.

OpenVizsla can do high speed: https://shop.sysmocom.de/USB-Tracing/

What are you after though? A scope is more fun. :)

[–] za_warudo_steve_freiheit@lemmy.world 1 points 3 weeks ago* (last edited 3 weeks ago)

I'm trying to learn electrical circuit design and programming and want/need an oscilloscope for obvious reasons (I already have most of the basic stuff such as a soldering station and a multimeter). I know I want to work with various ICs, FPGAs, and of course stuff like USB to plug stuff. Though budget isn't that extravagant, I should have decent wiggle room (I suppose totals of below or around 700$ is fairly manageable at the moment).