Arduino Master Lock Cracker! WW146

[@ThisOldTony]

awwwww bet that was fun to build!

[@amritlalsingh7780]

This Old Tony you here

[@taba1950]

This Old Tony teach us about the water displacement trick

[@PeterWMeek]

For all the complainers: this was a demonstration of concept and a demonstration of capabilities (of the hardware, the software, and the designer). The "brute force" technique (trying all combinations) predates everything but the actual invention of combination locks of this type. Nobody on KZbin (or in the 20th or 21st centuries for that matter) invented it. If you all you want is an openable Master lock, you can buy a new one with the combo card attached for a few bucks without needing to design, build (and pay for) a machine to crack it. If you want an existing lock open there are plenty of ways to "getter done"; I like a Sawzall™ with a carbide abrasive blade myself (or a cutting torch). This was pretty cool if you ask me.

[@MaxWattage]

Fun Math Fact: When the "combination" lock numbers are chosen, the order is important, and you can't repeat a number, it is therefore actually a permutation lock rather than a combination lock. The equation for calculating the number of permutations in this case is n!/(n-r)!, where n is 40 and r is 3, which gives us 59,280 permutations.

[@r.j.sworkshop7883]

Finally! Someone getting This Old Tony on This Old Tony!!! Mechanical design is my favorite and my old day job. Rarely does your first design look much like your final product. Fail fast and fail often was my practice when I was doing it 9-5, I just had never heard it put into words. Nice little design, thanks for sharing.

[@samykamkar]

Sweet!

[@joelonilsson]

Your version is also sweet! Humble of you not to start a fight over him not mentioning you. Are you working on any new projects that will be uploaded on KZbin? I'm always super excited when I see an upload from you!

[@lsdave]

Also love seeing your videos Samy!

[@av6966]

Samy Kamkar respect to NYC CNC for the great video ... but your like Big Boss to me bro I'm trying to learn to code arduino thanks to you ... sorry if im gushing had to shout out

[@Gkuljian]

I particularly loved this. When I was...45 years ago, I became interested in Master combo locks. I tore them apart and somehow figured out how the letters and numbers on the back correlated to a combination. I literally could walk up to a lock and open it first try. I haven't a clue how I did it. I was much smarter then than I am now. Thanks! This would have made a great exercise for the Fortran course we took in college.

[@jodyolivent8481]

Awesome work John, keep it up. I have a feeling that you knew this was the most cumbersome way possible to crack a combination lock. It is very inspiring though. What is really cool, and obviously missed by all the comment cry babies, is the technology doing the work. Fushion360 is FREE parametric CAD/CAM which allows you to build your design virtually. If NASA had an Arduino in the 1950s we would be living on the moon now. The ability to machine precision parts in your home without needing a donkey engine, line shaft, and a ceiling full of belts. Servos with built-in drives and a company that will offer specialized support? These are great times we live in. I have enough spare parts on the shelf that I could build one today.

[@samuelrosen137]

Thank you for mentioning that Arduino API is slow by embedded standards, though it is something I have known for a long time, most beginner users of Arduino would not know that. The only way you get 1 clock GPIO is through the use of timers and bare metal GPIO port manipulation. For more than GPIO, this gets difficult though, and will require the careful reading of datasheets. This is good to learn, but will take hours of research and potentially longer to debug. Having spent the time developing servo firmware, I now know that an Arduino directly driving motors with an H-bridge is only slightly uglier than a bare bones AVR, at least for what I was trying to do. Using an arm Cortex M is better if you don't mind bare bones embedded development in C, it will have overkill speed and will not require 8 bit processor optimizations for faster control. Using optical isolation between the microcontroller and H-bridge with separate supplies is a very good idea; I have zapped more microcontrollers with motor control than any other way. Another good idea is to use external diodes from H-bridge outputs to output power rails, this will prevent damage to microcontrollers.

[@WideVisionMetalFab]

I've had a few of those locks over the years, and I'm pretty sure all Masterlocks combos end in 5. Good video! :)

[@cornboy3]

Was that +ThisOldTony?

[@xenonram]

Verdi Rodrigues-Diamond Think it was.

[@eefalzer]

Just last week I was thinking about a project that did exactly this. Very cool implementation.

[@cylosgarage]

Tony saved the day as always

[@kentvandervelden]

Interesting, I've seen several similar projects at Defcon, but this is a pretty nice looking version, something that would fit in well on a table at a trade show.

[@DesignDynamicTactical]

Now THAT's an awesome project!

[@tjenkx6893]

The technology is awesome!! Creating a prediction for the combination is a great. I have worked in a prison setting for over 20 years and this lock is the easiest to break. Create a shim and the lock will be opened in seconds. Hitting it with a hard object is even easier.

[@owlmods2465]

This proof of concept is soo cool! Great work!

[@MrSidiox]

Great to see your enthusiasm! This is a great project, as you say showing all kinds of aspects; Arduino, CNC and design! Awesome stuff!

[@andreisima1977]

you are not a bad designer. you are just the last person i will ask for options. but i will trust giving you the options and let you design the thingy.

[@RoboCNCnl]

Cool project John !

[@alexanderrode6983]

Haha that is awesome! Great work John and nice idea. 👍

[@thomaslizon2594]

Nice lighting at the end, you look gorgeous !

[@DoogieLabs]

Now you need to pull up on the tab whilst turning the shaft, measure the current draw of the servo to detect when it stalls to find your detent locations, then use the input of those locations to crack the lock even faster.

[@DoogieLabs]

I really should watch the whole video before leaving a comment :-P Great job!

[@cffellows]

Love it! Problem solving at its best!

[@kaden56]

Way cool idea! Great execution too. Maybe I'll throw this on the far back burner of project ideas 😂

[@PetePanaia]

A cool reason to use CAD & CNC. This is pretty damn cool!

[@upshack1]

sammy kamkar combo breaker he is doing this project 15may 2015

[@Eggsr2bcrushed]

You seen the poison tap from him? Best project by far.

[@upshack1]

yeah ı see. sammy realy genius

[@TheColumna1]

sammy is my hero :^)

[@dakwman]

Master only has a few different combinations then they put the dial on in different locations. Once you can sense the last digit your looking at only a couple of dozen trys.

[@jeffmoss26]

too cool, for many reasons! a buddy of mine can decode/manipulate Master combos locks by hand in ~10 minutes.

[@canalmakertecparts1983]

Arduino é realmente muito legal para quem gosta de projetos caseiros, fácil de usar e aprender!

[@TheTechnocrat]

great idea man!!

[@bcbloc02]

I used to crack these by hand back in high school in less than 5 minutes. :-) Of course usually a feeler gauge gets one open in a few seconds. The device to do it automatically was very cool though! PS I think the camera girl has the color off a bit I feel like I am watching the Watchmen.

[@RookieLock]

Verry cool!I learned quite a bit from this! you should try making one for safe cracking :D :D they do exist but it would still be an awesome project! by the way, what you referred to as a detent is actually called a gate, their are true gates and false gates in good safe locks, the true gate allows the "fence" or the paul to be retracted. I just thought you might like to know the proper terms, but it doesnt take away from what you have done, great work, would love to see more Lock related stuff, Im a lock nut :P

[@LearningToFly77]

00:25 "I have this idea a few months ago" I saw this in youtoube a few years ago ;-)

[@rm.throws]

awesome project. did you guys work out the average time needed to solve a combination? or even just a ballpark number.

[@VLAHECO]

man... so cool job. ey John.... by any chance, are you going to the Maker F. in the Bay Area tomorrow?

[@codycarse]

I'd love to see you make a system that sorts everyone's jar of random nuts and bolts they have.

[@nickhankins5088]

Great video ! Now I wish I would have spent some more time looking at it at open house :-)

[@acruzp]

Read the title, instant like. I just know it's gonna deliver.

[@winkworks]

Great work!

[@WildmanTech]

I love this!

[@j0hmama]

there are even and odd locks, every lock only has about which is about 8000 possible combinations. if you know the last digit, your number of permutations could be reduced to 400. if you analyzed the indents, the number of permutations could be further reduced. I think I'll look at the ClearPath Library.

[@themaconeau]

You could also package this up in the next iteration and send serial output to an LCD screen. Plenty of libraries for them and wouldn't have to rely on a computer. Of course, great proof of concept but take it one step further ;)

[@davidmarks509]

Awesome video :)

[@HandsonCNC]

Great video :-) Can you share your motor config.. I'm reading Teknic's source and not sure how your motor is config-ed to get that kind of data from HLFB.. It seems to be reading state that doesn't match the 3 HLFB modes.. at least not as I understood them..

[@TeknicInc]

Hands on CNC - Great question. This is Brendan from Teknic and I helped create the libraries that were used in this video. The HLFB mode that was used was the "In Range" HLFB mode. The Arduino commands the motor to move in one direction while simultaneously pulling up on the shackle until the lock hits the edge of a "detent" (or gate). Once the lock hits the edge of the gate, the lock dial cannot continue to move in that direction which increases the tracking error of the motor. This tracking error triggers the "out of range" bit in the motor. Then the Arduino captures the position of each gate. For this device to work properly, the torque limit of the motor was lowered so that the motor doesn't "push through" these detent locations. Hope this helps.

[@HandsonCNC]

Thanks! That's what I was curious about.. By the way, thank you for commenting your C++ code so well.. Much appreciated!

[@stephenrider5045]

have you used the clearpath sc4 hub to control the servos? I'm able to use visual studio but im trying to find a c++ library to find more program examples

[@rerikm]

extra like for the enthusiasm

[@JackT9595]

I think you should make a 5 second video shimming the lock John. Just to satisfy the guys in the comments who don't care about fusion 360, machining and arduino :P

[@Phoenix1337]

Please, because some of us do not like seeing a golden hammer being produced

[@vincentjean6756]

Super cool!

[@cup_and_cone]

Spring loaded locking pawls on that Master. Shimming the shackle would take seconds.

[@Wrenchmonkey1]

But it wouldn't tell you what the combination is...

[@Wrenchmonkey1]

David ok.

[@Blacktronics]

Been done quite a while ago, exactly like this.

[@PetesShredder]

Google 'safe autodialer' its a whole type of product for cracking safes by dealing numbers in one at at time.

[@tansit2344]

You wouldn't want to try that on a newer high end safe. The RPM will burn the fusible link and lock the safe permanently. I think they are mostly inductive.

[@userequaltoNull]

Just sharply smack the lock upwards 3 to 30 times. This happened in the locker room of my High School machine shop.

[@aadornetto3279]

Very cool!

[@OldIronRC]

very cool

[@MyBigThing2010]

only missing about $750000 in tools and materials and contacts to actually build one myself. awesome!

[@Sketch1994]

5:12 This Old Johny!

[@simonhopkins3867]

bolt croppers are cheaper. ;-) only joking great fun video John.

[@RobertKohut]

Nice!

[@Xraller]

Saw the sad This Old Tony reference. That could of been a little better though.... come on!

[@CncObsession]

I smell a bank robbery ;-)

[@clintonconger4665]

very cool!

[@andriosz]

Pretty sweet :)

[@RobiSydney]

Not using digital write is called bit banging. On the arduino mega, I'm writing a linuxcnc via ethernet to arduino mega system. Basically a poormans MESA card. On the mega PORTA, PORTC, PORTF, PORTK, and PORTL are nice in that all 8 bits goes to pins. On the other ports you may get 2 to 6 pins per port which add a bunch of over head. On the uno and nano i think you only get 2 ports with 8bit access. John see you at Stans house!

[@jodyolivent8481]

That is awesome, I was planning on using machinekit on a BBB for a conversion. Unfortunately, I am not working on a machine small enough to warrant it at the moment.

[@GeofDumas]

ok that's amazing

[@hockeygeek21]

Bet the lock gets a bit warm! haha

[@repalmore]

Spring up, solenoid down, check for full up each iteration.

[@centurialinc]

I bet your AR Century Gun could crack it in about one millisecond..... ;) Best Matt

[@MrSoulBack]

how about giving credits to samy for his idea?

[@Eggsr2bcrushed]

6:25 rendering error, re-upload? Sound glitches out and screen is stuck.

[@jaredcallahan9515]

Woo I guessed it!!!

[@valshaped]

Samy Kamkar did it better, by reverse engineering the Master Lock.The second digit is sloppy enough to be out of 8 possible combinations, if I remember correctly.

[@habiks]

Classic over engineered product from the states. You could use that clear path to brute-force open the lock :D

[@xenonram]

Google+ SUCKS BALLS - the worst forced social network I don't think you know what brute force means in terms cracking a lock/code/password. BECAUSE IT CAN'T BE DONE WITH 1 MOTOR. (Unless there's a lot of complicated gearing and other mechanisms. That's so cute, you thought brute force attack was using physical strength. Bet you feel dumb.

[@Wrenchmonkey1]

Bet he doesn't actually feel dumb at all. Dunning-Kruger effect is a hell of a drug...

[@klo0095]

it takes 160 h to check all the combinations with it

[@RJMaker]

Awesome! Now you just need to create a system to unlock it in place.. ;~]

[@christopherleveck6835]

Hate to sound critical, but if you did this with a steppermotor and an easy driver, anyone could do this for 30 bucks. I have a couple of these drives but they are WAY to expensive to just have laying around or dedicate to a fun toy...

[@hairyfro]

One would imagine Teknic is providing some consideration in return for showcasing their motors with this project.

[@xenonram]

Sharklops He already said ohm the video introducing the motors about how he got them. Most of the time KZbin'ers get products for free without any stipulations. The manufacturer just hopes the product is shown off in the video, or that the product is mentioned on the channel. For them to send $600 (retail. so it prob only cost the company a couple hundred bucks to send the two motors.) worth of motors to John in hours of him talking about them is worth WAY Moore than the couple hundred bucks worth of product. Or whatever agreement John and they came up with. I bet if they tried to tell him how to place the product, with all sorts of stipulations, he would have just bought them on his own. Also, usually when you're working for a programming/research type of company, they have the rights to whatever you develop. Like when a researcher develops a drug while working for a pharmaceutical company like Pfizer... it's not the researcher's drug. Granted I don't think that's the case here because you obviously found out that it was developed by an employee.

[@Acc_Expired]

Ironically im pretty sure an actual lockpicking robot for normal key operated master locks would be easier

[@arrowstheorem1881]

Cool

[@JonesAndGriesmann]

Damn i cant believe that you told Grimsmo that his project was a complete waste of time. This is cool but far beyond useless.

[@xenonram]

ROFLhacks Two differences... John S. is a KZbin creator who puts out a ton of videos and needs content. John G. is a KZbin creator who puts out an "update" video every quarter to 6 months.

[@Wrenchmonkey1]

And Grimsmo admits that John was right, in that case. Grimsmo was reinventing the wheel, so to speak, and the time and materials he spent working on that project cost him more in the long run than simply purchasing an off-the-shelf-product would have. That's the difference. Grimsmo knows Saunders was correct, from a LEAN perspective. In retrospect, he realized that he failed to 'stay in his lane' so to speak, he openly admitted it, and said he was going to tell Saunders that he was correct as well. Grimsmo is about production of product, and getting it out the door. Saunders is about running his job shop and working on cool little hair-brained projects and putting them on KZbin/Patreon. Saunders is in his lane with the project. Grimsmo was not in his lane with his project. Apples and oranges.

[@MyBigThing2010]

all you need is a pencil, paper and the right math to crack these in about 5 minutes btw....there videos or there showing it too....it's pretty common knowledge amongst makers, hackers and locksmith communities

[@pursang360]

Now redesign it so you can do it with the lock in place on a hasp.

[@heyyou5189]

this has been done elsewhere on youtube.

[@justinturbomx85]

Nice that you credit the KZbinr that came up with this idea. :-(

[@chiefmachining7972]

JdC Turbo you came with that idea?

[@justinturbomx85]

Chief Machining sadly not. Sammy kamkar did search on KZbin Sammy kamkar code breaker

[@OpcodeZ]

I would assume it was a simple mistake or oversight. He has always been good about sources in the past afaik.

[@Chaos------]

If you're talking about the guy who did it in plastic and cracked it on the first try he didnt do anything like he did here. He just set it to pop in the correct code. This is an actual cracking program.

[@mq1506]

Sammy KamKar was not the first.

[@albiin900]

Lol Samy Kamkar made something similar but it was much faster

[@jasonmpd2946]

And this is how you charge money to open people's old combo locks.

[@tormachinc]

Holy Smokes! You did a This Old Tony! kzbin.info/www/bejne/qqXIeGWehsZ3m8k

[@bacawaka2813]

Awesome. Too bad I got rid of all of my master locks since they are one of the easiest locks to crack.

[@nobocks]

hahahha very nice

[@eformance]

If you're brute forcing 64k combinations, then you're not doing it right. Here is a paper that discusses the flaws in the Master Lock and how to crack it in far fewer attempts: jonwestfall.com/wp-content/uploads/2007/08/mlock1.pdf

[@R2053]

looks a bit like the lock drill from payday :P

[@Phoenix1337]

there is a easier way to do this.I bet that all other ways is easier than this

[@lutfijd]

What?!?!! no microphone to listen to the clicks, cmon!!

[@MrJTJINX]

I find it easier to use a master key to get into my smelly boot locker - bolt croppers

[@WarpedFabric]

Miniaturize and mass produce it

[@jeromevuarand3768]

Not sure what's the educational value of this. On the mechanical side a high school student can't do the complex machining for the jig. On the Arduino side, they won't have a corporate sponsor to provide hours of free software engineering. A library that does all the low level driving and interfacing and register mangling, and lets you set the motor at a specified angle is one thing, a library that provide a "TryAllPossibleCombinations" is just nonsense; it wouldn't exist in the professional world or in the amateur/hobby/maker world. To paraphrase you, "frankly here that's not OK".

[@Wrenchmonkey1]

So... Nobody except high-school students can find anything educational? Get outta here with that trash, commie!

[@theater40]

pft you could open a master lock by pissing on it...

[@thiagocruzy]

COOOOOOOOOOOOOOOOOLEST THING IVE SEEN IN ALONG TIME

[@mohamedelashaal9237]

textbook Turing machine......

[@Phoenix1337]

and by this you mean a textbook example of a normal computer?

[@mohamedelashaal9237]

yes, specifically the algorithmic method of making a thinking machine, first attempt by Alan Turing in the 50s. Same guy who broke the Nazi Enegma.

[@dorianmccarthy7602]

Try to avoid asking your own questions then answering them. It's a very egotistical american thing to do.

[@dunichtich100]

Fucking awesome!

[@dunichtich100]

I really want to use clearpath servos in my hobby- CNC-mill, but they are too expensive at the moment for me 😢