Álvaro PrietoEver wonder if your USB C cable is USB2 or USB3? Do you have some charge-only cables hiding in a box just waiting for the right moment to spoil your project plans?!
Fear no more!
I’ve made a simple board to test most of the things!
Connect your cable to both sides and the signal LEDs will light up if they are connected. Here’s an example of a USB2 cable and a thunderbolt 3 cable.
Want to test a USBA to C cable? How about a USBA to MicroB? USBC to B? MiniB? You’ve got it!
Here’s what a the dreaded charge-only cables look like. I had to make my own since I had previously banished them from my lab!
Best part of all? It’s open hardware! If you want to make your own, here’s the kicad project: https://github.com/alvarop/usb_c_cable_tester
I made a few, so if you know me and want one, let me know :)
If you want to make it yourself, I've added gerbers, BOM, and assembly files here: https://github.com/alvarop/usb_c_cable_tester/releases/tag/v2.0
Should be pretty easy to order from JLCPCB. I have made a page with lots of screenshots on how to do it here: https://github.com/alvarop/usb_c_cable_tester/blob/main/ORDERING.md
:D
Charles Poynton, PhD@alvaro I'd love to buy a USB cable tester, if you have one available!
Shae Erisson@alvaro I would buy several of these, do you sell them online?
@shapr I don't, but you can get some made by JLCPCB. Here are the instructions https://github.com/alvarop/usb_c_cable_tester/blob/main/ORDERING.md
Axel 🚴😷🐧🐪⌨ | #WeAreNatenom@alvaro: You should try to put that URL on the PCB mask somewhere, maybe on the bottom of the backside text. So just posting the pictures would have sufficed to share the URL, even if the people would have to type it. 🙂
Benson Leung@alvaro You don't know me, but I'd be interested in one!
@bensonleung if you’re in the Bay Area, I can get you a few!
I’ve read your reviews for sure!!!
I’ve read your reviews for sure!!!
@bensonleung also, if you have a Joulescope JS220, I have a USB-C front plate for it as well
Ben 
Hi @alvaro I would like one of those. The godforsaken cables drive me up the walls. Do you sell this perchance as a ready to use thing?
Mahon Baldwin@alvaro I would totally buy one of these!
Electronic Eel@alvaro why doesn't one of the VBUS leds on the left light up for the charge-only cable?
@electronic_eel because I only connected it to 1/4 vusb lines available. Since it’s a USBA cable there’s only the one. :D