I just saw this interesting article: This Little 3-D Printed Robot Cracks Combination Locks in 30 Seconds article tells that a well-known hacker Samy Kamkar published on his website the blueprint and software code for a 3-D-printable Arduino-based lock-opening robot he calls the “Combo Breaker.” Attach it to any of millions of Master Lock combination locks, turn it on, and it can open the lock in a maximum of five minutes with no human interaction. “If you’re trying to protect valuables in a storage locker, you should probably be using a better lock.”
C-C-C-Combo Breaker is a motorized, battery powered, 3D printed, Arduino based device that can crack any Master combination lock in less than 30 seconds! For details check out web page http://samy.pl/combobreaker/
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Tomi Engdahl says:
Robot Opens Master Combination Locks In Less Than A Minute
https://hackaday.com/2022/09/18/robot-opens-master-combination-locks-in-less-than-a-minute/
A common trope in bank heist B-movies is someone effortlessly bypassing a safe’s combination lock. Typically, the hero or villain will turn the dial while listening to the internal machinery, then deduce the combination based on sounds made by the lock. In real life, high-quality combination locks are not vulnerable to such simple attacks, but cheap ones can often be bypassed with a minimum of effort. Some are so simple that this process can even be automated, as [Mew463] has shown by building a machine that can open a Master combination lock in less than a minute.
https://github.com/Mew463/Project-l0ckcr4ck3r