![]() Follow me on Twitter or join my mailing list to hear about future projects and research./* * Created by ArduinoGetStarted. Point of Contact: can see more of my projects at. println () does the same thing, only after using println, anything new that is printed gets printed in next line, I.e. $9: If you don't already have a breadboard and wires, they will kind of help.Ĭombo Breaker's source code can be obtained in entirety from my github: 4 Answers Sorted by: 6 print () prints whatever you send in. $17: If you don't already have digital calipers for precise measurements to measure the lock, for example, these are inexpensive and accurate. Normal thermal paste has very little adhesion and kept falling off, so I switched from thermal paste to this thermal adhesive. $8: Not required, but this is the thermal adhesive I use to permanently attach the heatsink to the stepper motor driver. You don't need this one, but if you want to recharge the battery, you'll need a charger that supports 3-cell LiPos. $45: This lipo charger is overkill if only used for this project, but is a good one that I use at home for a wide range of batteries and cells. $14: This 500mAh 3S (3-cell, 11.1V) battery gives enough juice to the stepper motor to be very effective, and at 500mAh can last between 30-120minutes straight before having to be recharged. While the Arduino is 5V and can drive the servo normally, it won't be able to pump out enough current for the servo when it starts hitting the shackle and could damage your Arduino. $5: If you're using the analog feedback servo, you'll want to use an external voltage regulator to provide enough juice to the servo. $15: This servo not only provides the torque we need to lift the shackle (90.26 oz*in), but has an additional wire providing analog feedback that we use to detect the state of the shackle and whether it has opened or not. $25: For use only with the double shaft stepper motor, this optical rotary encoder lets us know what position the shaft of the stepper motor is at and allows us to employ an exploit on Master combination locks where the stepper will get locked into certain grooves within the internal combination disc of the lock. $16: This double shaft stepper motor allows you to build the more advanced Combo Breaker while employing an optical rotary encoder on the back to detect the position of the stepper when the dial stops turning (which is part of the exploit employed). ![]() $18: You can use a normal stepper motor for the "simpler" version of the Combo Breaker build, however if you're working on creating the more advanced version, you'll need a double-shaft stepper motor like I liste below. $13: Instead of the EasyDriver, I upgraded to a smaller, yet more powerful stepper driver that can go up to 1 amp (1000mA). This is what precisely controls the dial. $8: I originally used an A3967-based EasyDriver which can drive a stepper motor up to 30V at 750mA. Allegro A3967 / EasyDriver Stepper Driver $15: A 5V Arduino Nano microcontroller is used as the brains of the project. I've included the models for 3D printing on my github: Status: Operational, open source, open hardware, declassified. Live demonstration and full details available in the video: It is portable, open source, 3D models provided, and exploits a new technique I've discovered for cracking combination locks in 8 attempts or less, but in an even more exciting, automated fashion.īy Follow me on Twitter or join my mailing list to hear about future projects and research. Samy Kamkar - Combo Breaker: combination lock cracking deviceĬombo Breaker is a motorized, battery powered, 3D printed, Arduino-based combination lock cracking device.
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