Open danielweidman opened 1 year ago
tnikitin
commented
1 year ago I received a PixMob bracelet at the Handball World Championships in Stockholm, Sweden (January 2023).
Opened it up, it seems like it's using something else than IR as it doesn't have an IR diode.
PCB contains the following text: Cement v1.1 20220228
danielweidman
commented
1 year ago I received a PixMob bracelet at the Handball World Championships in Stockholm, Sweden (January 2023).
Opened it up, it seems like it's using something else than IR as it doesn't have an IR diode.
PCB contains the following text: Cement v1.1 20220228
Woah, that's interesting. Thanks for the photograph. Perhaps it is a Bluetooth one? https://github.com/MustBeArt/PIXMOB-reversing.
Can you make out the text on the silver component in the top-middle? (and the others too, I guess)
tnikitin
commented
1 year ago I received a PixMob bracelet at the Handball World Championships in Stockholm, Sweden (January 2023). Opened it up, it seems like it's using something else than IR as it doesn't have an IR diode. PCB contains the following text: Cement v1.1 20220228
Woah, that's interesting. Thanks for the photograph. Perhaps it is a Bluetooth one? https://github.com/MustBeArt/PIXMOB-reversing.
The event had 20k+ people, not sure if bluetooth would work with that many people.
Can you make out the text on the silver component in the top-middle? (and the others too, I guess)
Markings on the PCB X1: 26.1522 MHZ-H
U1: CMT2210LH
U2: AKICW
U3: No visible text
"CMT2210LH is a low power, high performance OOK RF receiver. It is suitable for ISM band 315MHz/433.92MHz wireless applications."
I've checked the datasheet (https://www.hoperf.com/data/upload/portal/20220218/CMT2210LH%20Datasheet%20EN-V0.6-211214.pdf), with the 26.1522 mhz crystal the frequency would be 915mhz.
danielweidman
commented
1 year ago Markings on the PCB X1: 26.1522 MHZ-H
U1: CMT2210LH
U2: AKICW
U3: No visible text
"CMT2210LH is a low power, high performance OOK RF receiver. It is suitable for ISM band 315MHz/433.92MHz wireless applications."
I've checked the datasheet (https://www.hoperf.com/data/upload/portal/20220218/CMT2210LH%20Datasheet%20EN-V0.6-211214.pdf), with the 26.1522 mhz crystal the frequency would be 915mhz.
Okay, wow! Thanks for thoroughly going through those markings and finding the datasheet. Look like they really are doing a non-BLE RF model of bracelet now! I wonder if they are going to abandon the IR ones completely (TBH that would make me kinda sad) or if this is just a new, different sort of offering. I suppose this would be harder to do location-based targeting with, but they don't always do that with the IR ones anyway.
I looked for recent FCC filings by PixMob, and sure enough I found one for a new 915 MHz OOK transmitter. https://fcc.report/FCC-ID/2ADS4-WAVENODE/
Looks to support 31 individual bracelet groups. It also mentions and "Impact Mode", like on the older IR bracelets? Did they do any motion-sensitive effects at the event?
ivlzme
commented
1 year ago I got a bracelet recently at Taylor Swift "Eras" Tour (2023). PCB:
There is text VIC v2.3r1 (C) 20211206 likely indicating the firmware version. Looks to be a couple years old. Unlike the above, this uses IR.
You can't make it out on the picture but the component labeled U2 also has the marking AKICW
Also, looking through the issues, it looks like this is a model that has already been seen.
danielweidman
commented
1 year ago Thanks very much for the detailed info! I hope you had a good time at the concert :)
pqpxo
commented
1 year ago Hi there!
Here is a wristband from the Coldplay concert in Manchester, UK (3rd June 2023) ...
adi6409
commented
1 year ago Looks like the exact same one a friend gave me from the music of the spheres tour!
settwi
commented
12 months ago i have two PCBs from the Eras tour (June 2023) that are also v2.3r1. I emailed Pixmob to see if they could release their instruction set and didn't hear back lol.
It seems like these bracelets are pre-programmed to shut off a while after the show, even with charged batteries. They don't respond to the demo programs.
Is there a reset pin on the little 8-pin microcontroller? I might try to figure out a firmware dump...
WS
TheReelDill
commented
11 months ago
Another OOK rf device. This one from The Weeknd at the London Stadium
![Uploading BB562A2A-DAB5-4D6E-B263-707D6D8FFA89.jpeg…]()
antonialoytorrens
commented
11 months ago Another OOK rf device. This one from The Weeknd at the London Stadium Uploading BB562A2A-DAB5-4D6E-B263-707D6D8FFA89.jpeg…
This is exactly the same one as The Weeknd at Estadi Olímpic de Montjuïc (aka Estadi Olímpic Lluís Companys) I have gone today.
https://web.archive.org/web/20230721121534/https://estadiolimpic.barcelona/en/weeknd
tiix95
commented
6 months ago I received a PixMob bracelet at the Handball World Championships in Stockholm, Sweden (January 2023).
Opened it up, it seems like it's using something else than IR as it doesn't have an IR diode.
PCB contains the following text: Cement v1.1 20220228
Got the same at Amsterdam Music Festival in October. RF one, working well with captures in rf/ folder !
Bardymo
commented
4 months ago Hello, I was doing a little research on how PixMob bracelets work and on the codes that Danielweidman has given, and I find it interesting. I recently went to Juan Luis Guerra's concert, and they gave us the PixMob bracelets, of course out of curiosity before starting the concert I opened it, and I could see that they use an IR diode accompanied (according to what I was able to investigate) with an nRF52832. Power is provided by two AAA batteries and the bracelet has 4 RGB diodes. At the concert it was wonderful to see the spectacle of these colorful bracelets, I also don't know how they could create wave-like sweeps and also how they could illuminate one area and not another (I suppose they achieved this effect using projectors with moving heads but I'm not sure) . I tried to find out if there were IR projectors but my cell phone camera is not capable of showing the infrared spectrum.
After the concert they left us the bracelets, and I would like to be able to light them and make some color combinations as I have seen in some short videos. It would be interesting to use those bracelets again in some family activity that one does. I am not an expert in electronics or lighting, but if you could help me turn them on I would be very happy. With the little knowledge I have and using AI, I have tried to use the codes that several people have taught to turn on the lights, but I don't know why they have failed and when I try to execute them it doesn't happen, even when they are compiled on the Arduino. . Here I leave you a photo of the set.
AleX04Nov
commented
1 month ago Got my from Eurovision 2024:
Looks like it has 24.something crystal
RFs are working with FZ on both EU and US frequencies))
adriah
commented
1 month ago Got this one at a Taylor Swift Eras concert in Stockholm last Sunday (2024-05-19)
Hello,
I've discovered it's pretty hard to tell where PixMob products have been used in the past/tours where they are currently being used/upcoming events they might be at.
I wonder if we could crowdsource some of this info, so I'm starting a thread here.
I'll start with some I know of:
There are some more listed on the PixMob website and Wikipedia, however those sources are far from exhaustive.
If you get a bracelet from an event that's not been mentioned already, please leave a comment to let us know and describe the bracelet/other item you got!