MiniMed MiniLink Transmitter
Does anybody have an idea about how to do this? I do not think Medtronic will give me the info. I have 3 electrical engineers at my disposal. :) If they don't give me the info I hope we can reverse engineer the protocol.
Replies to This Discussion
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Permalink Reply by Jamie on -
Hey Jack, I'm working on a personal project, and would LOVE to get access to the data too - not from the transmitter, but from the stored data on the pump. Have you checked out the new CareLink USB, and if so, is there a way to see about writing something to access it, and get the data? (IE did you do the USB sniffing with the meter cable before?)
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Permalink Reply by A. Roeder on -
Hello, is this still an active topic?
I live in Germany and I also analyse the rf-link between my girlfriends medtronic/minimed pump paradigm 522 an the minilink sensors.
In Europe the frequency is 868.35 mhz but this is not important for the content of the transmitted data.
I have bought an RF-transceiver for a serial port directly from medtronic. It cost only 48 € and works fine. There is also a USB-transceiver, but I want to analyse the data with a serial sniffer software ;-)
The transceiver has a "TR1001" transceiver from "RFM". It is a typical chip for this tasks!
So far, I can see the data but unfortunately they are encrypted. But I found an interesting thing in the www. Maybe anyone can find a solution.
The software for personal use is named "CareLink Personal" from medtronic. The software based on JAVA and can only be started, if you have an web-connection for logging in, in your CareLink-account.
On the website https://carelink.minimed.com you can log in and start the JAVA Applet for syncing the data from the pump with CareLink. The JAVA applet will be stored in a temporally folder (folder is defined in the JAVA environment config). In this folder you can find many folders, with many .class-files. The .class-files are compiled, but with the tool "jad", you can decompile them into readable JAVA-files.
I decompiled some .class-files and find an config that says, that the encryption of the data are based on "md5". From my point of view, we can’t find a solution because we aren’t able to catch the "md5"-key.
But maybe anyone have an idea to run the CareLink Personal in an offline way!
Greetings from Germany
Andre
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