Thank you for posting about this repair ! Its a nice challenge and you have nothing to lose but a bit of time :-) Looking back on this video, some of those chip connections have almost no solder on them, making them prone to this kind of damage. A bit of close examination showed it has a Micro SD shoved into the end of the plug. I would suspect the dongle “6” limit has something to do with available e2 to store paired items, processing power, or some other factor. This allows you to establish communications needed for (4) without any modifications to the hardware. Do not worry if you have lost your USB receiver, you can get a replacement receiver here and pair it yourself. Happy to ship to England! 1 Kudo 10 Replies Highlighted. If so, please press each of these keys in sequence and send me the output from the events pseudo-file. Yeah, it’s only registering as an 8GB drive but what do you expect?”. MaBe42 has updated components for the project titled CoViano. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. The firmware on the keyboard & mouse is not readout-protected. They do have a PC tool available to change between fixed / isolated / multiple paring and listening to anything in range. It also needs to be able to talk to multiple devices so its already the ‘complex’ PCB makes no sense to add costs to every peripheral. I hope to have a writeup & code dump ready in a week or two. Logitech has a paper on their dongle’s compatibility. Get a SPI reader and have fun. practice his microscopic soldering skills, Counter-Strike Gets The RGB LED Treatment, https://www.zdnet.com/article/logitech-wireless-usb-dongles-vulnerable-to-new-hijacking-flaws/, https://download.microsoft.com/download/3/3/2/3324D913-59F5-4EA2-BC6E-AA6EDBECFB9D/Microsoft_Wireless_Comparison_vs_27Mhz.pdf, As Facebook Tightens Their Grip On VR, Jailbreaking Looks More Likely, OpenOffice Or LibreOffice? Does maybe the dongle pick the number/code when first initialised by driver, does maybe the keyboard have some super low power capacitor backed nvRAM to remember it??? 78 channels x “> 65000” which is probably 65535 codes, TDMA to multiplex the many devices on each frequency. Here is how to obtain the information on Linux. It might not seem extraordinary to some people, but this video is a good example to show that repairs to delicate electronics in such a small scale are feasible, and can serve to reduce the amount of electronic waste we constantly dump out. Aside from code, the OTP contains factory-programmed settings such as address, RF channel set, and AES encryption key (not present in the mouse) This is the reason for the 6-device limitation *per dongle*. in a very big world wide online store I found it in 2 seconds. Best regards, Logi_Manny. Thank you! Just because some electronics seem dauntingly elaborate or beyond salvaging, it doesn’t always mean there isn’t light at the end of the tunnel. However it would also seem to add an extra expense in manufacturing, so one wonders if there was is there is a softer way of doing it going on. How does it manage that when the pairing software for Windows only does up to 6 per dongle? https://infocenter.nordicsemi.com/pdf/nRF24LU1P-OTP_PS_v1.0.pdf, Factory initialized unique keys and OTP firmware means that key injection and pairing MITM attacks. I find it highly doubtful that the keyboard/mice end can be reset – that is the end its easier to bake in the ID on production and ignore. Learn how your comment data is processed. AccidentalRebel has updated the log for Poor man's Mini 3D Printer. Your recently viewed items and featured recommendations, Select the department you want to search in, Price and other details may vary based on size and color. You’re seeing this ad based on the product’s relevance to your search query. Sometimes I wonder what the data would really have been worth to her or her boss. I'm begging you to help me. Fosmon Replacement Dongle USB Breakaway Cable for Xbox 360 Wired Controllers - Dark Grey (1 Pack) 4.5 out of 5 stars 872. Life too short to deal with lost dongle. I would love to be able to duplicate the dongle if it was lost. Also, if you happen to have the original receiver (especially for the Sculpt Ergonomic keyboard), I’d be VERY interested in seeing the HID descriptors, I’m still having trouble with some special key reports. Well, [The Equalizor] took it as a challenge and used the opportunity to practice his microscopic soldering skills just for funsies. (I figure the USB end will be as its got that USB connector that should be able to program it where the keyboard/mice would need either special jigs or firmware that listens for a rebind command and manual control to seek on the other end too. “Hey, you ever hear of a phantom limb where someone gets an arm or leg amputated and it feels like it’s still there? For comparison, here is a paper describing MS’ wireless technology. The firmware simply looks for the last valid entry. Also, my apologies for spamming the forum. The first part I need is the contents of the “rdesc” file inside each one of these (sudo cat /sys/kernel/debug/hid/####/rdesc, for each #### matching the description above). Please contact firstname.lastname@example.org if you have any question. “Also, if you happen to have the original receiver (especially for the Sculpt Ergonomic keyboard), I’d be VERY interested in seeing the HID descriptors, I’m still having trouble with some special key reports. “You can see the work performed on this tiny dongle after the break.” Currently has a SanDisk 16 gig in it. And then there’s the USB device that’s broke but still works. Heh, good one. What she didn’t tell me was that she had run over the drive with her car. From the video and also the reference schematic from the nRF24LU+ datasheet, I was able to bridge the broken connections and complete the repair. I bet that they didn’t even bother to fix this in newly manufactured units. $6.99 $ 6. The NRF24L?1 radios can listen on up to six distinct addresses at once (with some limitations), and will ignore messages sent on other addresses. So one wonders if leaving the batteries out for long enough would clear the keyboard and/or mouse. It’s been languishing in storage, but recently I had an identical dongle turn up in a box of wires that came in from somewhere else. K400 plus USB dongle.. Lost the Dongle,, Need a new one Answered. There's a problem loading this menu right now. 6. It’s an older type, uses PS/2 connectors. Lost it first. See, I can plug it into the computer and the computer thinks the drive is still there!!!!! I’m slightly more than academically interested, because I had a MS half-ergo* desktop for a desktop machine, where the dongle seemed to fry. First, they can use different channels, of which there are 126, but only 63 non-overlapping for the standard 2Mbit data rate. As its OTP its fixed to whatever it left the factory with. Email qq at kuku dot eu dot org.”, Let me know what information you need/how to extract that (screenshots? Microsoft arc 1392 keyboard dongle lost Hi guys. But watch this! Everything today is designed to LOOK premium while being the same garbage on the inside. 3. just copy&paste?or a command output) and I’ll mail it to you :). $6.99 $ 6. The paper mentioned by thechad seems to be describing a technology distinct from the logitech “Unifying” dongles. The firmware also implements “debug” radio commands which can, among other things, write the configuration area. I looked into mice / keyboard pairing recently when giving my kids a raspberry PI to use for educational websites. (note: I haven’t yet tested self-reprogramming on real hardware. 7. Finally, as I mentioned, I’m having trouble decoding the special key (F1-F12) reports when the Fn switch is turned on. Actual pairing is never lost in case of batteries dying or being changed. Kano keyboard supports the devices with the Standard USB Port. I’ve bought some cheap MS keyboard/mouse sets with “missing USB receiver”, and I’ve just managed to get them to talk with a homebrewed receiver. KatCeDe 11 September 2019 06:55; Hi, in a very big world wide online store I found it in 2 seconds. Comment actions Permalink. Then I carefully used a worn down cutoff wheel in a Dremel to carve a notch into the metal surround to make it possible to pull cards out with a fingernail. The wireless adapter in question, which came from one of his clients who accidentally bent it while it was plugged into a laptop, refused to be recognized by a computer under any circumstances. The original receiver is vulnerable to so-called “mousejack” attack, where an attacker sends unencrypted key messages which are happily accepted by the receiver. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. So, each HID device will have a directory in debugfs, something like /sys/kernel/debug/hid/XXXX:VID:PID.YYYY. Have not tried pairing them yet. The basic principles seem similar though. 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