UHF | RFID for flipper

[vernal cape]

@pine oracle you can ask questions here if need be, no need to DM me 🙂

[dry jay]

What's the hotplate used for?

[vernal cape]

reflow soldering!

in my case at least.

I put my board on it with my parts laid out, and then put a little tinfoil cap on it to trap the heat. bake for pretty much spot on 1m30s, and voila! nicely reflowed PCB

I need new solder paste though, had to cut mine with flux to make it work better 😬

[pine oracle]

@vernal cape I skimmed the channel looking for a Tindie link or otherwise where you might have listed a YRM100 fitted for the flipper, but didn't find it. So I DMed you about

[vernal cape]

it's literally in my bio xD

Right now I have none in stock to sell, however you can head to redteamtools.com and get one from there!

[pine oracle]

🤦‍♂️ sorry and thanks!

[vernal cape]

no worries!

I'm not sure how they are regarding shipping, so depending on where you are in the world it might be more economical to wait for me to restock if you're not in a hurry.

I need to get a new 3D printer before that happens though, as I'd like to be able to sell cases for my boards, but have to do some quality assesment first

[dry jay]

I thought the foil was your lunch. 😂

[vernal cape]

xD

[pine oracle]

I'm in the USA. I'm trying to emulate or copy the UHF sticker my community uses for the security gate we drive in through ($70 for replacement or extra windshield stickers) and potentially use it to access apartment complexes with similar gates for my work (this would be authorized based on the nature of my work).

[stark bay]

Photo of the sticker and reader?

[stark bay]

Nice, I’m guessing you would be able to clone that. Given the markings of 184 00516 AWID26 might even be able to do it without scanning the tag first

There’s not much on emulating UHF rfid but you can read and write to another tag.

Discussion on same tag here #1136167977708957737 message

[vernal cape]

ah.

yes. entirely possible to clone these, but previous testing shows that it's not a simple cloning process. MrKeyFob can do it with just the number engraved on the tag, so my best guess is the data to write on the tag has to take into account the TID of the tag and the engraved number. could be as simple as adding one to the other, but I highly doubt it, and have no way to research this anyways

so, tl:dr is, it's not possible to clone these with the flipper yet

[pine oracle]

Thanks! I'll read this discussion

[pine oracle]

Do you think that with the help of the YRM100, the flipper could emulate the tag?

I have this CC1101 on the way:
https://rabbit-labs.com/product/cc1101-900mhz-expansion-board-rabbit-labs/?v=0b3b97fa6688

[vernal cape]

sure, but you'll have to write the software to do that, and heads-up: noone did it yet afaik

[vernal cape]

Flippermeister V2.6.0 just dropped:

• flipped the wiring of the picoblade connector for the UHF module: that fixes needing a pass-through cable, now an off-the shelf cable (Molex P/N: 151340500 ) will work as bought, no wire flipping needed!
• nudged the sam slots 1mm higher so they don't interfere with the picoblade connector if a slot is present in CARD2

[shy wadi]

<@&932724996210573333> could someone pin this? Thanks

[shy wadi]

New update just dropped. Hopefully fixed issues reading with 115200 baud rate. Also some slight UI enhancements to the configuration menu. Should hopefully be merged into the application catalog this week but feel free to download and install earlier if you want! https://github.com/haffnerriley/Simultaneous-UHF-RFID-FlipperZero

[stone hound]

Great! I was able to scan 18 tags in a row without a single crash (latest fw and yrm100 with 115200 baud rate). I have a question regarding the ui: is it possible to preserve settings between app launches? Settings like module type, region, baud rate

[shy wadi]

Thanks for testing it out! And yes that is possible just not implemented yet. Can add that in the next release!

[shy wadi]

The latest release was just merged into the app catalog! Feel free to go update the app in qflipper now! https://github.com/flipperdevices/flipper-application-catalog/pull/738

[shy wadi]

Out of curiosity, what are y’all using these apps for specifically? Obviously for reading/writing and messing around with UHF RFID tags, but anything else specific?

Trying to get an idea of what y’all are using this for and how I can update it to benefit those use cases. Appreciate any insight as I continue to develop this app! Thanks!

[vernal cape]

me personally, not much, the app is too clunky compared to just plugging my flipper in my PC and using the demo software for the YRM modules.
other than that, checking TIDs so I can sort chips mostly, and, if the software doesn't crash / works reliably, testing out boards post-assembly!

[shy wadi]

Thanks for the insight! Is there anything I could do to make it less clunky? Appreciate any perspectives from others as well! The more feedback I get the better so don’t hold back!

[vernal cape]

broadly, I'd say try and make the read interface more like the NFC app.

Right now, it looks more like an inventory management app, where you'll scan a bunch of tags and then export the info to use elsewhere, while in comparison, the NFC app gives you a lot of info on the scan screen (chip name being one of them).

While EPC might be useful for an inventory management app, it's not exactly the most useful info when you don't have a database to check it against and bring up info on the product the chip is embedded in.
TID on the other hand, can give a lot of info that is encoded in a way that is standardized and can show you exactly what the chip can do.

[vernal cape]

something more like this maybe?

[vernal cape]

with more > button leading to something like this maybe?

(green bar on the right side simply to show what the screen height is)

[stone hound]

Also, maybe saved credentials should be saved in separate fff files? Like .nfc, .ibtn, .sub

[vernal cape]

what?

[stone hound]

Last time I checked saved tags were in some other format than flipper file format

[vernal cape]

that's because there is no standardized file format for UHF RFID....

[stone hound]

Yes. But I mean, right now all EPCs are saved as a single file, while I think it might be nice to save each tag contents separately. Epc, tid, user (if applicable ). And fff is just an example of how it could be organized. Just a thought

[vernal cape]

ah yeah, I see what you mean. Sure, we just have to come up with our own file format, making sure that it's future-proof. that alone requires a very thourough read of GS1 specs because oh boy are there some wild cards out there.

also it very much depends on what you want the app to do. if you're making an app for inventory management, having a single file (CSV would be better) is a godsend. but imo for what the flipper is supposed to do, seperate files is better like you said

[stone hound]

I thought of this when I wanted to diff some library ticket with writeable unprotected USER. Separate files (in any format, really. Even CSV) seemed much easer to handle

[vernal cape]

I guess the big question for the filetype is:
how much info do we want in there?

do we want just the raw data?
do we want something a bit more user readable with fully decoded content (at least for stuff we can decode, like TID)?

[stone hound]

I think I (personally) would be happy with all memory banks contents (I mean raw contents). Tag type is useful on reading stage (to determine what are actually handling), but if it is too much of a hassle to implement on saved files - that’s fine, I can use digits repo to determine tag type😅

[vernal cape]

nah, determining tag type should be done in-app, that's why I have that .JSON file on my repo

I'm thinking something like this maybe. definetly not this, but it's a good starter imo.
just a text file, open with notepad.

had uploaded the wrong file

[stone hound]

Yes! That's what I meant when was talking about fff file

And since it is fff, it would be easy to read and compare

[vernal cape]

I mean it's not fff, just a file format

[teal laurel]

I would call that fff, fff just means non-unique key-value pairs separated by : , often with a header containing file type and version

[stone hound]

Yeah, maybe I'm wrong. I thought of fff as a human readable file with data and necessary header info

[teal laurel]

Fff is the format, each application's usage of fff is a file type, atleast that's how I see it

[vernal cape]

fair enough

[vernal cape]

is there a proper description of the fff somewhere? fff page on the dev wiki just points to each implementation

also i did take the .nfc file format and just change the field values, so it's normal that it matches up

[stone hound]

I don't think there is restrictions on new file types

[teal laurel]

I know it from working with it all this time, but seems like the header for it has an explanation atleast https://github.com/flipperdevices/flipperzero-firmware/blob/dev/lib/flipper_format/flipper_format.h

[vernal cape]

sweet, exactly what I needed !

[stark bay]

wouldent you need to have a multi scan then select by epc or something first?

[vernal cape]

yeah true. I guess you could also just multi-scan, then select each tag and read everything successively maybe though?

[shy wadi]

Thanks for the ideas! This is super helpful!

[shy wadi]

Do you mind opening a GitHub issue documenting some of these feature request when you have the time? Will make tracking easier for me!

[shy wadi]

Make sense!

[vernal cape]

all done! 😊
made two, one for the UI, one for the file format

[shy wadi]

Thanks! Gonna try to work on some of this over the next month or two. May take longer for certain features so will try to release it feature by feature.

I assume the UI is a higher priority for y’all?

[vernal cape]

for me, yeah, but I know it's gonna be hard to get right

[stone hound]

No rush at all

[shy wadi]

I would love as much feedback as possible so anyone who has used this app please don’t hold back! The only way to improve is with feedback! I can totally change the UI to work for y’all

[shy wadi]

So I have a screen somewhat similar to this already. Would this work, adding the prev, scan more or is there any other functionality that would be useful. What other actions on this screen would be useful for y’all!? Is the saving functionality still useful here? Just trying to get an idea of what is good to keep and what is good to remove.

[shy wadi]

That’s fine! Any feedback is appreciated! I am willing to work with y’all to get it right. Just lmk what y’all prefer

[vernal cape]

USER and RES memory banks aren't needed on the scan screen, if you're that deep in tinkering that you need to see those, chances are you want all the info you can get.
Also, I know TID memory can get pretty big if you get the right combo of options, even more so with EPC, so having dedicated viewing pages for each memory bank is a must.
Pretty sure I saw a chip with more USER memory space than EPC memory space too, so yeah.

I think having three dots on overflowing data can be nice to show that there's more info.
Also, and I'll open an issue for this, the scrolling needs to either pause when the data reappears, or needs to start appearing from the right of the screen. otherwise it's very hard to see the first word or two of a memory bank.

'EPC info' at the top is just semantically and factually incorrect, call it 'memory contents', or have the chip name. chip name imo is more useful.

Saving functionality is crucial. not only for just saving tag data that's important, but also sharing with other users, and (hopefully one day) emulating.

[lunar oracle]

Hi everyone, did anyone tried detecting pulses shorter than 50 microsecs using the internal CC1101 transceiver by any chance?

[vernal cape]

Not that I know, what are you trying to do?

[lunar oracle]

I'm trying to capture signals between a reader and a tag using the internal radio of the FZ, but so far I couldn't get any pulse shorter than about 50 microseconds. I made a custom preset for OOK modulation, tried with different settings for datarate and rx filterbandwidth but when I save the signals I've caught on the flipper, I see only random pulses or big chunks of pulses (like 10000 microsecs). I've tried luriking in the firmware code and I've only found a filter duration default setting but changing that didn't improve anything.

But I know I am capturing the whole communication because the duration of the big pulses I see in the .sub files matches with the expected duration of the communication, I'm not able to go to a more fine grained level

[vernal cape]

Ah, interesting use case!

I'd say drop the flipper for now and go straight for a cc1101 module hooked to an Arduino or esp, and try it that way? Maybe the firmware/FAP you're using is interfering with your data collection

Cc1101 should definitely be able to do this

[lunar oracle]

Yeah, I was thinking the same as plan B, thanks

or maybe attach an external cc1101 to the FZ?

[vernal cape]

Maybe? Now that I think if it, it could be a software limit from back when the firmware was all on the chip and not the SD card, worth a look in case it really refuses to work

[stark bay]

@lunar oracle you have seen this? https://github.com/zaphoxx/zaphoxx-uhf-rfid

[stark bay]

They are in the iceman discord too if people have questions.

[shy wadi]

Thanks for all the feedback. This is super valuable and I appreciate you taking the time to think about what can be improved. I noticed the GitHub issues and will start working on all the feature requests as I find the time.

[vernal cape]

you're welcome!

I want to have an app that works well, so we can start adding little add-on codes soon, like sending commands to light up LED tags and the likes!

[gritty shard]

Hey All - new to flipper and tinkering in general... I bought a YRM1002 to use with my Flipper Zero and (surprisingly) I got my radio to read a UHF RFID (parking pass) tag. My problem is two-fold. 1. The app seems to be very unstable. Crashing my flipper each time, sometimes not reading anything and requiring a reboot. I think I may have a configuration problem (baud rate, etc.), which leads to my second problem. I can't find any really good documentation on this setup. Some of the documentation I've seen is hit or miss at best. Some wiring diagrams show resistors, etc. (which I don't have in my setup). Does anyone know where I can find the best documentation for Flippzer Zero + YRM1002 ?

Thanks in advance.

[vernal cape]

Hey, Freya here.
first off, your wiring is spot on. (if the app doesn't crash but also doesn't seem to read, swap tx and rx)

secondly, yeah, the app is still a work in progress and does crash a lotI've found that using it without rebooting first seems to lead to crashes more often

the resistor you speak of is simply good practice for the EN pin (which you rightfully plugged in the 3.3v output), but not needed

[gritty shard]

oK @vernal cape thanks so much! Glad to know I probably did everything at least semi-correct.

Now i just need to build an easy-plug board so I don't have all these wires floating around.

[vernal cape]

dons coat and top hat well hello good sir, madam, or other, have you ever heard of the wonderful product that is Flippermeister?

it'll bring you joy to know this miraculous device was intently made to cure one such problem as you are experiencing presently!

and to add on to the amazing properties you now know of, know this, future patron, it also enables the use of the Seader app, provided you aqcuire a SAM on your own terms, and also provides easy access to SPI and ICSP plugs!

buy now!

https://www.redteamtools.com/flippermeister/

[mint egret]

definitely should be a wizards robe - I don't think wizards wear coats

[vernal cape]

ooooh velvet cape

https://tenor.com/TVVL.gif

[mint egret]

No robes around the mill 🫨😆

[gritty shard]

Wow thats cool. Currently out of stock lol

Also out of my budget range lol

[shy wadi]

Hey @gritty shard I am the creator of the app! Like digits said, it is still a work in progress. If you have any bugs/suggestions you wanna report please open a GitHub issue so I can track it accordingly. Thanks so much! https://github.com/haffnerriley/Simultaneous-UHF-RFID-FlipperZero

[gritty shard]

Hey @shy wadi - great work! Is there any sort of logging capabilities on the FZ or the App that I can review and send to you?

[vernal cape]

you can get debug logs using the devboard if you have it

[teal laurel]

if you dont have a devboard https://lab.flipper.net/cli type log debug

[shy wadi]

Like others suggested the dev board is a good option. I only have a bit of logging (not complete) so can add more too in the future.

[vernal cape]

Alright, little poll time. Let's say I was to sell cases for the Flippermeister.... What color(s?) would folks be interested in?
I can embed colors into each other, like say having Flippermeister written on the case, etc.

[vernal cape]

O.O

I think I'm almost ready to put this batch up for sale!

[limber pelican]

shiny!

[storm creek]

Hi, maybe this module can works on flipper for UHF:

https://a.aliexpress.com/_mNmXaT5

[vernal cape]

maybe

maybe not

[lone turtle]

Nice effect

[vernal cape]

Thanks!

Got this plate first because the Staryu Holo is probably the best looking, but I'll buy more as I sell boards

More choices for the people!

[vernal cape]

almost ready... what a fool I was.

Store restock tomorrow!
We got flippermeisters!
We got case options now!
We got more uhf inlays options as add-ons than last time!

Get'em while they're hot! 💸💸💸💸💸💸

@stuck nymph pretty sure you didn't nab one last time, so pinging you to make sure you can this time

[vernal cape]

it's been approved by the tindie gods!
https://www.tindie.com/products/didgitalpunk/flippermeister-v2/

[limber pelican]

the SAM slots, soldered means a socket is soldered not the SAM right? none of the options have a SAM provided I assume?

curious why neither slots soldered is the most expensive option? I'd have thought cheapest would be nothing soldered, followed by one socket soldered, and finally both sockets soldered being the most expensive

[vernal cape]

yep! only RTT had that option, I don't have SAMs on hand to solder unfortunately!

[vernal cape]

Gotta rework the board to remove a slot, by default I make them with at least one attached

more time efficient to rework one board than to prep for production again to solder the rest of the boards withtout damaging any other connectors

[limber pelican]

ooh that makes sense

[shadow night]

Hey guys, I am utilizing the Flippermeister board with a YRM100, it seems I often get lockups of the app when in read mode. holding the back button for a soft reset does allow me reset it and get back to a working state. Sometimes it takes a few tries to get it reading properly. I did get an out of memory error a few times, any recommendation on debugging?

[vernal cape]

yeah that happens. are you using Riley's app, of Frux.c's?

I guess it doesn't matter, the problem is, there's only a basically a single person behind each of these apps, and dev is slow and just a side project of theirs. the only thing that'd make them less buggy would be more people contributing to the code.

[shadow night]

Is that the repo that was updated like a year ago? Might have to give it a whirl.

[vernal cape]

Frux.c's repo is basically dead at this point, I think the last update is for firmware version 0.91 or something.
Riley's app is more up to date, but there are a still a lot of crashes, bugs, and ui optimization to be made

[teal laurel]

ive had more issues with frux's app overall, but found riley's app slightly less intuitive. once i figured out that every time i open the app i need to switch to yrm1000 and enable it too, then it works fine. also it seems less sensitive than frux's app, didnt wanna read for a while when i tried, maybe im using too low of a power level (user error)

[vernal cape]

Frux got it working very well on one of the updates, but iirc did some changes afterwards and it broke a bit

Same experience with Riley's app as you. I find switching region back and forth and exiting settings makes it work a bit better, though that may just be bias on my end

[wise vector]

hey I am trying to copy a parking garage pass but I am afraid the TID will block me from that

could any one help me out?

[nocturne relic]

then get TID changeable uhf creds

[wise vector]

creds?

Would I be able to do so with the regular y100

[nocturne relic]

the yrm100 can do it, don't know if any of the flipper apps yet

[wise vector]

What about fliipermeister

is that the same thing?

[nocturne relic]

flippermeister is the yrm100

what i'm saying is i don't know if any of the apps do TID change yet

get a chafon uhf desktop reader writer

and TID changeable chips

[wise vector]

There is a yrm100 on ali express

https://www.aliexpress.us/item/3256805110198094.html?gatewayAdapt=glo2usa4itemAdapt

[nocturne relic]

can someone answer whether or not the app has tid change

@vernal cape @teal laurel ?

[wise vector]

which application are you talking about?

On the flipper?

[nocturne relic]

yes

for the channel you are in

that's what i am saying

i do not know if the apps for the flipper have the ability to change the TID

the desktop ones do but i'm unsure for the flipper apps

[wise vector]

Can I get that YRM100 from ali express?

[nocturne relic]

sure but again, the app might not be able to do what you need.

so wait.

[wise vector]

and when you say desktop applications, I can do this without a flipper?

[nocturne relic]

until someone with experience with the app answers n

[nocturne relic]

yes but using a YRM for desktop apps sucks cuz you have to wire up to usb

which is why i said get the chafon

because that's a USB reader

and way cheaper

[wise vector]

and that can copy TID's

So with my original parking pass when it reads it, it willm also read the TID and copy it onto another "magic" card

[nocturne relic]

you need to use TID changeable chips but yes. the desktop software can

[wise vector]

When I search it up it says the Chafon CF601 cannot clone TID

[nocturne relic]

show me where it says that

screenshot

[wise vector]

No — the Chafon CF601 can read the TID from your parking pass, but it cannot send the special vendor commands needed to write a TID to a magic tag.

Here’s why:

Magic UHF tags have a hidden command set to unlock and overwrite their TID bank.

Most desktop readers like the CF601 (and the YRM100) are built for standard EPC Gen2 commands only — not the proprietary “TID write” commands.

The software that comes with the CF601 doesn’t expose raw low-level access to send those special commands, so even if you connect a magic tag, it will behave like a normal read-only TID chip.

from Mr. GPT

[nocturne relic]

you asked an AI

you didn't search shit

you used incorrect terms and it gave you garbage.

go do some actual research

chafon can send TID changeable commands, because it's about the SOFTWARE used with it

go get the UHF reader from Mtools @wise vector

it comes with the software which is very easy to use

[wise vector]

so what's the difference between that and the CF601

[nocturne relic]

hardware and manufacturing

the mtools one has proprietary shit in it

its software is better

[teal laurel]

doesnt look like it

neither app does

[nocturne relic]

the chafon one requires a lot of messing around to get it to do TID change

[wise vector]

Ahhhh yea your right

[nocturne relic]

the mtools is an AIO with software.

[wise vector]

it is about the software

Cool so TID Changeable UHF 900MHz TAG and the UHF Reader – Support Changing TID

Where do you learn all of this stuff from?

[nocturne relic]

years of experience and time investment in this area of study

[wise vector]

What is this area of study called

[nocturne relic]

rfid.

[wise vector]

So most parking garages uses the EPCand TID

What if the TID is rolling?

[nocturne relic]

the TID is the serial number of the card

it's like asking if your first name changed every time someone used it.

TID is not a memory portion that changes because that is oppositional to the function it holds.

[wise vector]

So what do parking garage do to combat cloning

[nocturne relic]

many of them are unable to combat cloning

and are easy to clone.

the ones that truly care will use a password contained check

which isn't very common.

[wise vector]

So what is the flipper zero for if you can just clone with other devices?

[nocturne relic]

what kind of question is that

the flipper zero is a multitool, of the technologies it includes, it can do many functions. but for every technology it has, there exists standalone devices that are much more individually capable at that task

do you have a flipper zero

[wise vector]

Yes I do

I did*

[nocturne relic]

then you know what the flipper is

you can't compare the flipper and a standalone single tech device because they serve different functions

[wise vector]

Yea but there are other things that are cheaper that can do a better job for their own specific task

[nocturne relic]

ok and all of those standalone devices only do one technology, if you buy all of the standalone devices, the total comes to more than a flipper and 10x the spatial requirement with 0 inter functionality

[wise vector]

Ahh

So all the apps for the UHF cloning cannot copy TID

I heard that you do not need the TID

for most garages

[nocturne relic]

given you heard that from chatgpt you can assume that it lied to you.

there is no "most" anything.

there is no one standard for garage systems

some use TID some don't, some use EPC some don't, some use EPC+TID some don't

what is the point in making broad sweeping statements about how other things operate

wait @wise vector if you don't have a flipper+uhf board or a UHF cloner

how do you know it's using the TID

[wise vector]

I am assuming to be honest

I do not know

Is that important to know

If i just get the two mTOols stuff I do not need anything more right?

[nocturne relic]

you can proceed with the assumption it's not like it's harmful to make an exact clone

[wise vector]

[So why do the peopel use Flipper Zero with the YRF 100(https://github.com/frux-c/uhf_rfid/blob/master/README.md)

[vernal cape]

because it's portable. there is nothing as portable as this that I know of, without stepping into professional gear that cost an arm and a leg.

[vernal cape]

don't think any of them do. I think it might have been one of the next steps on Frux's app, but they didn't have time for it anymore unfortunately

certain parking tags can be cloned easily, the problem is noone that shares info and finds here or on iceman's server seem to know how to do it, and the ones that do (especially on Iceman's) keep that shit close to themselves and don't want to share with the group.

[wise vector]

Using Flipper ?

Because the mTools reader and the mTools RFID cards are super cheap like less than 70$

[vernal cape]

Yes.

And yrm100

[tardy girder]

Hello to everyone! I'm having some issues with module YRM1002. Everything is connecting properly but still not reading. When I hit start, it tries but doesn't read anything. I set up (5v on-GPIO) and configured through the app connected with the module YRM100 antenna external with no luck. The Zipper is updated. I also tried with other firmwares
and nothing. If anyone can give any other recommendations, I will appreciate it. Thank you in advance.

[vernal cape]

Just use the app normaly, make sure you select yrm100, and don't change anything else. It should work then.

[tardy girder]

Thank you !! but I already that way nothing changes do you if have to in a specific firmware ??

[vernal cape]

No, and we don't deal with firmwares other than OFW here regardless.

[vernal cape]

Describe precisely what you are doing

[tardy girder]

I just trying to read some cards but in the app read menu do you know what is CRC:XXX PC:XXXX ?. I don't know if I need to configure something else??

[vernal cape]

I mean tell me all the steps you're taking to set up your app, from launching the app to reading a tag.

[tardy girder]

I open the app(simultaneous UFHRFID) downloaded from the flipper zero web and then. I go to /configure, connection (on) and select the YRM100 module and then I jut go to read and push the middle botto, nothing happens

[vernal cape]

no. select your module first, then do connect.

[tardy girder]

it still the same, thank you for your time but do you have any other subjections ?

[vernal cape]

are you sure what you're trying to read is UHF?

made sure your reader connections are made properly?

restart your flipper and go through the connection and reading process on a clean boot, does it work any better?

[tardy girder]

Ey my friend Digits thank you for your help!! I got some advances, know it reads but most of the time crushed and I have to reboot .My questions how I can save the read of the tag !!!

[vernal cape]

can't for some reason, that might be a bug though. @shy wadi after scanning a tag, does the [next] button do something yet? I thought it did in a previous version?

oh wait, it's a sneaky input. press 🔼 @tardy girder

[tardy girder]

Thank you so much for your time and effort in trouble shooting with let's play with this for a little bit!!

[shy wadi]

Sorry everyone for being inactive recently. I have been trying to work on enhancements on the side but things are in a wonky state and haven’t had time to fix it the past month.

The prev and next only work for the M6E nano reader

[vernal cape]

Oh right, for multiple scan right?

[vernal cape]

It's fine, I'm sure you'll find time eventually!

[shy wadi]

Correct!

[shy wadi]

Yea I have some time blocked off but have been traveling a lot this summer. Hopefully will get some new changes out in September/October

[strong lodge]

I'm having a similar issue as you, what did you change?

[vernal cape]

Maybe flipped the tx and Rx lines

[strong lodge]

If I do that, it no longer detects that I have a module connected

[vernal cape]

Ok, then have you tried rebooting your flipper?

[strong lodge]

Yep, I get some luck by setting system baud rate to 9600 and also selecting 9600 in either of the two apps, and the blue LED will flash rapidly without reading

[vernal cape]

Either of the two apps?

[strong lodge]

https://github.com/frux-c/uhf_rfid vs https://awesome-flipper.com/application/lab.flipper.net/gpio/simultaneous_rfid_reader/

[vernal cape]

Ok, so frux.c's app has been out of date for well over a year at this point, and doesn't work on recent firmwares.
Riley's app has gotten updates since v1.1, do idk what firmware/ version of the apps you're using but regardless it seems like you're asking for it to crash xD

[strong lodge]

Is there a reccomended firmware and version? I'm not seeing one in the repo

[mossy swan]

Hey, for Riley's app, I'm seeing the saved tag with info like this:
EPC: empty here
TID: some hex data
Reserved: all 0
User Mem: XXXXXX
Does this mean the tag is protected with some password?

[vernal cape]

official, always, and latest app version through the app store.

[vernal cape]

that's.... wtf?
what does the TID's first sixteen characters say?

[vernal cape]

should be something like E2xx xxxx

[mossy swan]

TID is E28068942000402CF163

[vernal cape]

*I should have taken my coffe before responding messages, I meant first eight 🙃 *
your tag contains an NXP uCode 8 chip .
It has no special security features, and you should be able to read all sectors.

Keep in mind though that Ucode 8 has no user memory, so it showing up as XXXXXX in the app is just an indication that the memory space doesn't exist.

that's the difference between Ucode 8 and 8m, the 8m allocates part of the EPC (32 bits out of 128) to USER memory

[mossy swan]

Thank you. That is really helpful.

[vernal cape]

my pleasure.
have you tried reading the tag again? the missing info could be from an incomplete read.
if you have a picture of your tag, I'm always curious to see what people are reading!

[mossy swan]

I'm having some problems with the app rn, when I try to read a tag, the f0 has a very high chance freezing, then I have to restart it again.

[vernal cape]

yeah, that's normal

[mossy swan]

Idk if it is a firmware issue or app issue

[vernal cape]

wel, it's not normal per say, but it's what we have

if you're on official, definetly not a firmware issue

app has always been a bit buggy

[mossy swan]

Does the baud rate setting matters for reading the tag?

[vernal cape]

no, leave it as it is by default

[mossy swan]

I tried multiple times, it seems that the tag data is still empty

Is it possible that the garage system is just using tid to verify the vehicle?

[vernal cape]

aah, garage tags.
what system is it? AWID?

let me try real quick with one of my Ucode 8 tags

I'm sure I have one somewhere

[vernal cape]

I'll wait for you to repond to this first

[mossy swan]

I actually don't know, it's my apartment's system

oh wait

i think it is AWID

the tag has AWID26 on it

[vernal cape]

if it is it's wierd, never seen one of their tags with the EPC unable to be read.

if you were hoping to copy it, you're out of luck, the only folks that know how to do that keep the secret to themselves

it's not complicated at all, given that they only need the info that's physically printed on the tag, but none seems to know how to encode it on the tag

apart from them obviously

MrKeyFob is an example of such a service, but there a re others

[mossy swan]

ah I see, if that's the case, I will just at least try to read out the EPC

BTW, do you know if the three tags coming along with YRM100 is empty?

[vernal cape]

the three tags?

[vernal cape]

if you do manage to read the EPC, I'd greatly appreciate a full dump of your tag among with a photo of what's printed on it, I'm (very) slowly trying to make a database of all that info to hopefully find how the tags are encoded one day

[mossy swan]

I tried many times. I can read EPC from some other tags, but the garage one still shows empty EPC

I guess they are just using it without EPC?

[vernal cape]

That seems very weird to me. Even if empty it should show all 0s

[static knoll]

Hi, where can I purchase a UHF RFID module for my FlipperZero?

[vernal cape]

On my Tindie, or at red team tools!
Tindie's in my bio 😉

[vernal cape]

oh, unless you were strictly speaking abou just the UHF module itself, in which case Aliexpress or M5stack usually. there's a link for it in my product page on tindie I think 🤔

oh, and in the pins too!

[shell vortex]

So I am a noobie with no electronic background... I want to copy a UHF tag for my vehicle and have it usable for other cars. What do I need? (Flipper zero on the way) But from what I gather I need extra hardware/software.

Talk to me like I'm an idiot (because I am)

[vernal cape]

alright, first of all, what is this tag you speak of? is there stuff written on it? what does it look like (take a picture of it yourself, not a pic from the web if need be)

[shell vortex]

No other writing on the tag but you can see the antenna/wire pattern

[shell vortex]

Any ETA on restock of flippermeister? Trying to purchase on your tindie but it's OOS

[vernal cape]

go for the V2. V1 is never coming back

[shell vortex]

Excuse my ignorance what but what is a SAM?

[vernal cape]

it stands for Secure Access Module. basically it stores cryptographic information to do secure authentication. it alows you to read certain secure cards

not needed for UHF RFID strictly speaking, but there is one usecase which is still a long ways from developpement

[vernal cape]

I swear I've seen this antenna type before, but I can't remember who makes it

[vernal cape]

that's.... wierd

letme take a look

[vernal cape]

what options did you select?

[mossy swan]

My AWID tags have exactly the same attena pattern

[vernal cape]

oh, then NXP ucode 8 possibly, that said, inlay type ≠ chip

[vernal cape]

and inlay/chip type very much ≠ data encoding type.

[feral dragon]

Any fix or patch to stop the app from crashing/freezing when reading UHF RFID tag? I use YRM100 module and it freezes/crashes flipper during reading 95% of the time, basically unusable

[vernal cape]

Nothing yet, no. It's being developed by one person. In their free time, so it's bound to take a while

[shy wadi]

For which app? Just trying to keep track of bugs. I have been overwhelmed with work and personal things and am trying to find the time to work on this project since I know y’all are using it!

[vernal cape]

it seems Frux released his app on the app store!

[nocturne mango]

I have a YRM1002 module connected to the flipper zero. I am having an issue that when I try and read nothing reads. I have tried both [YRM100] UHF RFID and the Simultaneous UHF RFID app and also switched RX and TX multiple times with no luck.

I have enabled 5v on GPIO and get a red light on the board indicating that it is recieving power. Not sure how important this is but I do not ever get the blue light on the d2 led even when attempting to read.

On the YRM100 UHF RFID app, I enter the app and it shows me the Module info page (which I believe means it detects the module). However it is just blank for HW version, SW Version, and Manufacturer. I click continue and read tag and get to the detecting screen but nothing ever reads.

On the Simultaneous UHF RFID, I open the app, click configure, set connection to Connected and UHF module to YRM100. Then I navigate to read and click start. CRC and PC just show XXXX. #Epcs: 0 and Cur Tag: 1. But I dont believe its reading anything on that app either.

Snipped of Simultaenous logs:

[E][ExpansionSrvWorker] Stack watermark is too low 248 < THREAD_STACK_WATERMARK_MIN. Increase stack size.
40186 [D][ExpansionSrv] Detection disabled
40243 [E][simultaneous_rfid_reader] Failed to open Saved file
49722 [D][ViewDispatcher] View changed while key press 20018B98 -> 200217F8. Sending key: OK, type: Release, sequence: 00000038 to previous view
51444 [E][UHF_UART] UHF UART INIT BY APP
52700 [D][BtSrv] call 1, lock 0x00000000, result 0x00000000

[vernal cape]

On the yrm100 app, what happens if you spam retry?

Does it ever end up showing the module?

[nocturne mango]

no it says module detected but not what module type or manufacture or anything

[vernal cape]

wierd

[vernal cape]

once it says module detected, try and read a tag

[nocturne mango]

i tried but it didn’t read anything g

[vernal cape]

Weird, I'm not sure what's going on. I know both apps are flaky at best, but it could be your module, connections, etc.

Tag as well, who knows.

Actually, take a pic of the tag you want to read. Bonus points if we can see the tag's antenna

[normal light]

Hello all. I bought Flippermeister v 2.5 from Tindie. I was happy as a puppy, and then.. I found I have to buy UHF module elsewhere. So I did, today I received it. I bought YRM1001 from ali, as recommended on tindie. YRM came with usb-ttl converter and cable, the power LED works on YRM if using USB adapter. I tried to connect it to flippermeister, no bueno. YRM is not detected either in UHF RFID app or Simultaneous UHF RFID reader. LED on YRM module doesn`t come on when using Flippermeister. (There are 2 solder pads on the board, "Force on" is connected)
If I open flipper GPIO settings and set 5V on GPIO to ON, it stays ON only if YRM1001 is disconnected. Once I connect it and go back into GPIO settings, 5V on GPIO is OFF.

On RedTeamTools I found there are cross-cables (1-5, 2-4, 3-3..), so I repinned one of my cables (I bought 2 flippermeisters, 2 YRMs and got also 2 USB to TTL converters and cables), buuuuut... no bueno.
Is there some specific wiring I omitted? Flippermeister board short?
Thanks 🙁

[normal light]

Okay, my bad. The original cable already was mirrored. I un-mirrored it and now it works

[vernal cape]

Yeah, the cables I sell come all set-up from the get-go, since I make them myself ^^

I do have a paragraph in the product description stating that the YRM module is not included, but I might need to make it more visible? I agree that my product description is far from being pretty, I need to work on that.

I can't sell the YRM modules simply because I don't push enough volume to justify a bulk order of those module to make it worth it to the consumer to buy them from me as well. I get about 2 board sales a month or so, so stocking up on uhf modules would also be too big an investment for my tiny store.

Don't bother going into the GPIO settings, both of the UHF apps and seader should auto-enable the 5v rail upon launch 🙂
Don't hesitate to ask if you have any hardware questions!

Freya from Digits' e-lab

[normal light]

The info of "buy the uhf module separately, ideally here" wasnt there when I bought that before Christmas, I'd say, but now it's there (that's how I found out). I'd say the cable should be mentioned, at least something like "cable from seller doesn't work if not re-pinned" 🙂

The board and 3d printed box is very cool tho!

Btw i thought that "UHF inlay" is the reader thingie. It didn't connect the dots like inlay=tag

Btw the app often freezes during read, why is that?

[vernal cape]

That's very weird, I haven't changed the description since something like September?

I'll try and write something up about the YRM cables needing to be repinned according to the guide on RTT, that's a very good point.

Thank you! I take great pride in making my own 3d models and doing as much testing as is necessary to ensure everything fits as smoothly as possible.

An inlay is made up of:

• the chip
• the antenna
• the backing

It can be wet (with glue) or dry ( no glue).

Inlays are tags, but tags aren't necessarily inlays, though some tags (especially ones in card formats) are actually made using an inlay!

[vernal cape]

Buggy apps, unfortunately the devs working on them are both doing so out of their own times and don't always have enough free time to chase down bugs and freezes.
Frux.c especially seems to have been very occupied with other stuff for the past two years or so, and as such hasn't been able to work much on his app. There is a PR for it on GitHub with apparently a bunch of fixes, but he has yet to validate and merge it.

[normal light]

It's probable i bought it before september, as early xmass gift.. And I'm happy user testing it 🙂

[normal light]

Later on I understood what inlay is. It was confusing when I was ordering. Now the description is cleaner, definitely.

Aaand i can't wait for the PR to be approved

[harsh igloo]

@vernal cape

Seader still doesn't detect the UHF module
(https://old.reddit.com/r/flipperzero/comments/1s4hjzx/flippermeister_preshipment_issues/)

lol: it doesn't have any code to, yet 🤣

[vernal cape]

Aw damnit I completely flew over that bit xD

Ty @harsh igloo, I'll let them know

[harsh igloo]

it wasn't their main issue and it was just something offhand at the end. I just thought it was funny

plus they're not running OFW, so...

[vernal cape]

Ah, great

[proper cove]

Hey do you have any case files for a 3D print? I just got my flipper meister in today and would love to print an enclosure! Thanks 🙏

[vernal cape]

I do, I print my own cases for my sales on Tindie. Can I DM you?