Introduction: Fischertechnik Robot Lock Picker

Picture of Fischertechnik Robot Lock Picker

How to create a programmable fischertechnik robotic lock picker!

I play with different educational manipulatives for a living. (Visit Over the years I have built many robots!

I recently came across a great description of a device that would run through all the different possible combinations for a Master Combination Lock. Having a number of these locks without a combination, I thought this would be a great robotic project for this competition.

Unfortunately, I have not had the opportunity to render the step-by-step directions, so for now you will have to be content with some digital photographs.

UPDATE: I have posted pictures of an updated model using the PCS BRAIN.

A great analysis on finding a Master Combination Lock combination:

I want to cite Neil Fraser's locraker as the source of inspiration!
(This link was not working when I checked).

Note: I recommend Michael Sameks ft Designer to create CAD images of fischertechnik models.

Step 1: Description of Robot

Picture of Description of Robot

According to Jim Loy, a generic dial lock has a certain amount of slop in the combination. The combination can be discovered by trying every combination in pattern in about 200 minutes. (In his test, he solved a lock in about an hour. In Neil's project, it took about 30 minutes.).

In my first version of the Lock Picker, I used a pile of fischertechnik elements including two 9 v motors, a PCS Programmable Brick with the PCS Robotics Contoller, and a simple touch sensor.

Step 2: Have Fun!

Picture of Have Fun!

Have fun!

See my instructable on going to Morshausen!
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AmonRa (author)2013-09-15

Is the program you used something you could share?

milsorgen (author)2010-01-25

 Top goal!

chuck norris (author)2009-09-30

I do congradulate you on creating this device, ftking_83702. However, this is not an instructable. For example, If I may, "How to create a programmable fischertechnik robotic lock picker!"-you "Unfortunately, I have not had the opportunity to render the step-by-step directions..."-you, nine lines later. I understand what it is like to have no free time, however, if you are going to make an instructable, then make an instructable. I am not trying to be a mordant jerk, I'm just offering you some critisizm so that the next instructables you make will be better than this.

Howdy, no problem. I was getting this one online for a contest. In the time since I posted this, I have documented the model in CAD. Now I need to find the time to post here. ;)


Hope that helps!


duct tape man (author)2009-05-26

the chick is hotttttt (author)2008-08-27

I would save the time and open a can beverage. While you are drinking your favorite drink, search YouTube and see how to cut the can down and use it as a lock pick. This trick works great and I showed my son, who now uses it at school and changes the locks on his shooting club's team mates lockers. Revenge is sweet sorrow.

omnibot (author)tac.support2008-12-16

But that's not a robot. I like robots.

flymudpie (author)2008-07-17

Im sorry but this tells me nothing about how to build it just that you can find a combo in 200 minutes and u like Morshauen. Please add the part where you tell us how to actually make it. I want to know.

ftking_83702 (author)flymudpie2008-07-18

Howdy. Thanks for the interest. I will post step-by-step instructions and a video as soon as possible. Again, I appreciate the feedback.

joe57005 (author)2008-07-16

More detail would be nice, or at least larger pictures.

ftking_83702 (author)joe570052008-07-16

They will come. Just ran out of time for this stage.

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