Liquor Cabinet with SAFE "CRACKING" ROBOT!

  • Published: 13 April 2018
  • I made a liquor cabinet out of an old safe. I used an Arduino and a stepper motor to "crack" the safe combination using a keypad rather than turning the dial by hand. Cheers!

    Arduino Sketch:

    Parts (Amazon affiliate):
    Arduino -
    Driver -
    Stepper Motor -
    Keypad -

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Comments • 57

  • Tommy Callaway
    Tommy Callaway  11 months back

    That's freaking awesome

    • CarterPlays Official
      CarterPlays Official  1 years back

      Hey, can you come to my school and put one of these on my locker?

      • CIamajdovsky PvP
        CIamajdovsky PvP  1 years back

        • nscr2
          nscr2  2 years back

          Now comes the fireball!

          • Josh Dirkson
            Josh Dirkson  2 years back

            What's wrong with day drinking!?

            • mickvk
              mickvk  2 years back

              You mentioned you would share how you used other arduino project parts to meet these requirements... Can you link to that?

              • Jacob Sokolove
                Jacob Sokolove  2 years back

                Switch out the easy driver for a tmc 2208 or 2130. You can make it nearly silent. The 2208 is easier to use. Another option is the 2100

                • Brian Prusa
                  Brian Prusa  2 years back

                  Hahaha. Achievement unlocked... drunken Mike will thank you.

                  • John Mansell
                    John Mansell  2 years back

                    Super cool project. For your next project, it'd be cool if you set Alexa or Google to open the safe for you like you did with the voice controlled dust collection and recording setup.

                  • Kayli Stewart
                    Kayli Stewart  2 years back

                    Super cool project!

                    • Sean Knight
                      Sean Knight  2 years back

                      That’s cool. Good thing you drank after the build.

                      • Jesse Blanchard
                        Jesse Blanchard  2 years back

                        Dont worry about knowing how to code... there hasnt been a new line of code written in like 50 yrs...

                        • Henry Bills
                          Henry Bills  2 years back

                          There’s no point in changing the code. You showed us the combo on the dial

                          • SpoonsJTD
                            SpoonsJTD  2 years back

                            People, when a word is in quotes, it means 'not really'. "Cracking" means it isn't really cracking the safe. Very cool project.

                            • Farmer Brad
                              Farmer Brad  2 years back

                              Soo cool

                            • diacsn
                              diacsn  2 years back

                              Never gonne change that Code, gonna steal you Booze! Ha!

                              • John Lochary
                                John Lochary  2 years back

                                That is thinking outside of the safe.

                                • Taylor F.
                                  Taylor F.  2 years back

                                  What’s a saw za? Pretty sure it’s a saws all. Haha

                                  • John Jones
                                    John Jones  2 years back

                                    Would be neat to reprogram it to sequentially try every possible combination until it comes upon the correct one, then see how long it takes to open.

                                    • Mike and Lauren
                                      Mike and Lauren   2 years back

                                      I thought about it. The only hurdle would be finding a way to see if the combination is correct. It would need to turn the knob open and get feedback whether or not it could turn all the way.

                                  • CheapAssReviews
                                    CheapAssReviews  2 years back

                                    I'll drink to that. Love how you never play it safe!

                                    • Gene Jordan
                                      Gene Jordan  2 years back

                                      It's cool! Dressing the exterior mechanism up with a Steampunk theme could be another project.

                                    • Evan Dunville
                                      Evan Dunville  2 years back


                                      • Brad Parler
                                        Brad Parler  2 years back

                                        Such a cool project!!!

                                        • The Den of Tools
                                          The Den of Tools  2 years back

                                          Ok, I was expecting some "cracking". This feels like you just took an old safe and made it digital. I mean you can buy a digital safe that same size from Harbor Freight (when its on sale) for the about the same price as what you paid for all your materials. Granted it won't have that geeky cool factor but still. I mean considering all the effort you put into this and the amount of space on the back of the door it seems it would have been cooler to make it more integrated.

                                          • michele vitarelli
                                            michele vitarelli  5 months back

                                            cracking a safe with steppers isn't allowed on youtube. It's too effective and achievable. Safe manufacturers are in panic mode and need to introce a time-out like atms and passwords. 1oo failed attempts and come back in an hour would suffice.

                                            This video is a work around to demonstrating how it could be done. Even if it would take a months, it is still profitable.

                                        • Michael Baker
                                          Michael Baker  2 years back

                                          Mike, where's the shot chiller?!?!

                                          • Mike and Lauren
                                            Mike and Lauren   2 years back

                                            It actually made it to the new shop! That project is actually important that I finish because it’s one that I gave up on for no particular reason. I’ve quit projects before when they weren’t going like I hoped, but that one was going great and I just never finished it.

                                        • TheFantasic MrFox
                                          TheFantasic MrFox  2 years back


                                          • Windkisssed
                                            Windkisssed  2 years back

                                            That really is impressive....I could feel your success! Unfortunately, I never got into Arduino. I grew up “Mac” and it seemed Arduino was more for PC peeps! But I have to say the freedom to create almost ANYTHING sounds exciting! Thanks for the inspiration!! Lauri

                                            • Rafael Rafa
                                              Rafael Rafa  2 years back

                                              Where you get time for all your projects?🤔🥇 Salud🥃

                                              • Marcel's Workshop
                                                Marcel's Workshop  2 years back

                                                Cool project, so many possibilities. At a server to turn the handle.
                                                Use an RFID card instead of a PIN, project approved.

                                                • Mike and Lauren
                                                  Mike and Lauren   2 years back

                                                  Ohh cool idea. Really any input could be swapped for the keypad.

                                              • Knowledge Dosage
                                                Knowledge Dosage  2 years back


                                                • MilkCap
                                                  MilkCap  2 years back

                                                  Put your costa rican stash in there.

                                                  • doomoncharlie
                                                    doomoncharlie  2 years back

                                                    Do you ever hear this when you get home ... You spend how much on what?? Arggggggggggggggggggggg!!!

                                                    • Moto Giant
                                                      Moto Giant  2 years back

                                                      pretty sweet

                                                      • Tim P
                                                        Tim P  2 years back

                                                        When I sober up, I'm going to be totally jealous!!!
                                                        My greatest nightmare of locked up booze has been solved.... brilliant !!!

                                                        • Jennifer Shea
                                                          Jennifer Shea  2 years back

                                                          That was pretty cool, man!

                                                          • Wordsnwood (Art Mulder)

                                                            Yeah that's not a clickbait title at all.... good one, Mike! Would be cool to see this on a better safe, but the proof of concept is slick!

                                                            • Jacob Eggert
                                                              Jacob Eggert  2 years back

                                                              I totally thought you were gonna put the hardware on the inside when you showed all that space

                                                            • muh1h1
                                                              muh1h1  2 years back

                                                              Thats cool, would be even cooler if everything would be hidden in the door and the knob turned seamsinly by itself :)

                                                              • Tony Rios
                                                                Tony Rios  2 years back

                                                                you can use magnets to secure the device to the door

                                                            • letroy33
                                                              letroy33  2 years back


                                                              • dexuus
                                                                dexuus  2 years back

                                                                By calling it a cracking robot I was expecting something with a microphone listening to the clicks to break the code. Still really cool though.

                                                                • webslinger2011
                                                                  webslinger2011  2 years back

                                                                  dexuus I was thinking that too! That would've been awesome!

                                                              • Blake Murphy
                                                                Blake Murphy  2 years back

                                                                That's really awesome! I want to make one now :)

                                                                • masterchief88
                                                                  masterchief88  2 years back


                                                                  • Stephen
                                                                    Stephen  2 years back

                                                                    That's neat.

                                                                    • Josef Senti
                                                                      Josef Senti  2 years back

                                                                      Cool!! would be nicer if the motor was inside and moving like magic ;)

                                                                      • Eric Chan
                                                                        Eric Chan  2 years back


                                                                        • NE555
                                                                          NE555  2 years back


                                                                          • Shaz Suhail
                                                                            Shaz Suhail  2 years back