I'm looking for non-destructive way to structurally attach a standard servo with LEGO bricks. I'm interested in answers for either Large, Medium or Small size servos.

I'm using LEGO Mindstorm/Technic bricks to prototype all kind of robotic projects and I often use non-LEGO parts for the electronics (e.g. Arduino, Servos, LEDs, ...). I'm always trying to find better ways to integrate those non-LEGO parts without damaging the LEGO bricks.

I'm aware that there are some commercial adaptors available on the market but I'm interested in creative homemade solutions (low-cost to no-cost).

For example: here is one way to attach a medium size servo to a LEGO Technic beam:

Servo attached to LEGO Technic beam

  • 1
    At first I thought you were speaking of the electr(on)ic part of things, but now I think you may rather be after the physical assembly to LEGO parts - right?
    – Joubarc
    Commented Oct 7, 2012 at 14:58
  • 2
    @Joubarc Yes I'm talking about the physically attaching servos and LEGO bricks together. I'll clarify and add a image to help.
    – pcantin
    Commented Oct 7, 2012 at 15:34

2 Answers 2


The best solution is to create custom LEGO-compatible bricks that your servos (or other parts) fit into. This can be done by:

  • modding existing bricks with knives, glue and other tools
  • building bricks from other material (wooden LEGO, formed with Fimo/Sculpey...)
  • building bricks with a 3D-printer (for instance see the LEGO category on thingiverse). There are online services to print your designs if you don't have a 3D printer (yet ;-)

Each strategy is worth another question here at bricks.SE.

  • 1
    To add to this answer, I would also suggest looking at The Free Universal Construction Set. While they don't provide anything for integrating legos and servos specifically, there's a lot of examples of how to integrate Legos with non Legos components (some of which might make integrating a servo easier.)
    – kaliatech
    Commented Nov 6, 2012 at 19:06

Depending on your rigidity requirements, I've found double-sided tape to work well.

It's cheap and found in many general goods store. The servo itself can be taped and supported on all four sides and/or the bottom to many types of lego brick surfaces.

You can also use double-side tape to mount a lego surface to a servo control horn. That provides nearly infinite mounting flexibility. However, the control horn attachment will not be very rigid or support a lot of weight without an additional structures to support whatever is actually moving.

When finished, you can just peel the tape off. (...which is sometimes easier said than done.)

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.