In regards to the gimdow lock, is it possible to sniff the Bluetooth to figure out what it’s telling the lock mechanism to make it open, and emulate that with our own Bluetooth?
If so, can’t you just attach a nfc / or xac to a Bluetooth board and away you go?
So im looking at all the docs and pics I can find on this dam thing and it looks awesome! Almost exactly what we want im going to see if I can pick one up to disassemble and recreate in cad if we think thats useful?
Can you document the insides for us while you’re in there? Even if it can’t be replicated, I would still be happy as a clam if it can be hacked and bent to our will
Nice. I’ll keep that one in mind if I need to outfit a door that I can’t find a proper lock case or handle replacement for. The website doesn’t say anything on its ability to actual latches. I suspect it can only turn deadbolts. But maybe not.
Ok I’m sending off one of my unopened gimdow locks to @Devilclarke to see if he can explore some of the ideas in it and make some CAD drawings. Looking at these locks again got me curious again so I wanted to take it apart to understand how the tumbturn and key side could operate without any resistance at all… I didn’t get too far in my investigation of this but I will post stuff anyway until I or Dev can get more relevant info posted.
Inside is a very simple looking control PCB… basically motor control, wireless connectivity to the pin pad, and hopefully the security access list is contained here and not in the pin pad… but not sure about that yet.
The turn system is a gear driven ring… not sure yet how it manages to spin freely when the motor isn’t engaged… or rather, I’m not sure how the motor driver gear engages the ring when spinning… it might be a centrifugal system that pushes the gear into place… but my attempts to grab the drive gear with tweezers to see if it would swing out resulted in no movement… so not sure yet… but here are some more pics of that gear system…
actually there is no leg… it might be a shadow you’re seeing. on the underside of the switch is the battery compartment and that white bit you see under the switch slide is the “battery string” visible at the first part of the video… it’s literally connected to nothing.
I have seen something “similar” before, it was an external switch that outwardly appeared to have no function, but it had an embedded magnet that interacted through the watertight enclosure with a reed switch on the internal PCB… but it doesn’t really look like it from your video.
Alternatively, it could simply be for a different / older / upgraded version of the unit