blueTag - A Raspberry PI Pico JTAGulator Alternative

[@adriannaharouff3016]

i was going to warn everyone in the comments about 5v intolerance but i didnt need to! great video!

[@monad_tcp]

that's a cool thing, I always did that manually by poking with my O-scope and trying to use intuition to find the ports.

[@cezarylachut4428]

hello I tested jtagulator it didn't find swd but blue tag found it ; - ), -> I'm impressed

[@smokeweedeveryday9099]

First… just saying. Also, I love your videos. Look forward to each release.

[@hexlocation]

Another great video as always Matt. The pico seems to get more and more love everyday imo.

[@monraet]

Thanks so much for posting this video, a big help getting my Pico up and running

[@AdamSantamaria-b3q]

So clear ! Thanks for the demo :)

[@MkmeOrg]

Very cool!

[@the_beefy1986]

Pico is so inexpensive that I just keep 3-4 extras on hand for random projects now.

[@KNfLrPn]

The rp2040-zero is about $2 each on Ali and has a reset button and RGB led. I bought about 30 so I can throw them at any project that comes up.

[@norm1124]

XIAO Rp2040 are currently $3 per piece (2350 coming).

[@craigblackie2034]

This is really cool, thanks for sharing!

[@craigleemehan]

Awesome work!

[@UndernetSystems]

Pretty interesting tool. Would love to also see the other one just to see how it compares.

[@norm1124]

Amazing video, having XIAO RP2040 laying around this should work too. Did you test if it can communicate with the JTAG port of your STM32?

[@thejustintung]

Love the video! What do you think of Waveahare’s USB To UART/IC2/SPI/JTAG converter? It seems like it could be a good versatile tool. I’ve used. Lot of Waveshare’s stuff for raspberry pi, but can’t find any real world info or reviews on that particular device.

[@cmfanz]

In your example, you showed how to enumerate swd pins. I assume the exact same step can be done for enumerating jtag pins as well in an unknown board correct? Fyi, ive never used jtagulator before.

[@drooplug]

Is there a tool that would help determine communication protocols that doesn't involve and oscilloscope?

[@mattbrwn]

Logic analyzer

[@drooplug]

@@mattbrwn Thanks. 👍

[@drooplug]

@@mattbrwn Do you have any recommendations for a low cost solution?

[@mattbrwn]

Link to a super cheap one is in the video description. That's the one I use currently. Might upgrade to a Saleae when I have more funds.

[@drooplug]

@@mattbrwn thanks. I'll take a look.

[@dingokidneys]

Help! I'm trying to get a serial console on an old motherboard using a CP2102 USB to TTL/UART dongle. I'm getting nothing but gibberish in picocom using any of the normal speeds starting of course with the one that is configured by the linux image I'm booting from and tried with flow control on and off. I have the TTL leads connected to the COM port header, pins 2, 3 and 5 for RX, TX and Gnd connecting to TX, RX and Gnd on the dongle. This setup works to give me console on my Raspberry Pis so is there something fundamentally different about the PC UART that's not accounted for here? The linux image I'm booting from pops up a good serial console when booted in a VM with the COM port connected to a Unix socket so I doubt it's my software setup. I've googled my fingers down to the knuckle and can't find anything relevant nor any reason why this shouldn't work so if anyone has any insights I'd be very grateful to hear them.

[@Spozinbro]

Still haven't got around to getting a pico so sadly I'm gonna have to stick to my pi 4 and piscope :(

[@cognisent_]

"I'm running Arch Linux. I do not ... *smirk* ... automatically mount flash drives to my system." Haha yeah we know ❤️.

[@mattbrwn]

😁

[@The-KP]

This guy, deep knowledge. Amirite?!

[@fireteamomega2343]

So there's lots of people who claim to be hackers but this is what it often really looks like. It's looking at data sheets understanding how circuits work soldering modding and programming. Then making a game plan and using it all to make something do exactly what you want. In my opinion he deserves way more subs for what he's teaching on this channel. The usefulness unfortunately is often overlooked for channels with showmanship by people not necessarily all that knowledgeable in the realm. Whereas not to pick specifically on him but as an example guys like network chuck can just talk fast claim the hacker status while being just a regular experienced IT guy and get 500k subs (I don't think he even owns a soldering iron). And at the end what does he really do for you... gives you information you could easily Google shows clips a few terminal commands and sells coffee... Don't get me wrong if you find value in that kind of content great. But it's not really doing anything except a how to being a script kiddie certainly not a how to hack device unknown.

[@mpicuser]

Great video Matt, thank you!