using standard servos with LEGO parts?

Question

I've found that -- not surprisingly -- using a standard servo with LEGO parts is annoyingly troublesome. The mounting holes and case size don't match up neatly with LEGO hole/stud spacing.

I can imagine making an adapter part or two, perhaps as easily as drilling appropriate holes in a piece of plastic. But I'm wondering if anyone else has already come up with a clever solution to this problem. A quick Google search turned up only one item, using a nonstandard (smaller) servo.

Any pointers appreciated!

Thanks,

- Joe

Gordon McComb · Accepted Answer

One of the first I did was a LEGO-compatible servo mount for standardservos. 's not "clever" but it does work!-- Gordon

Joe Strout · Answer

That's cool! I had seen that before, but forgotten about it.

Does the position of the technic beam work out such that, when you build a "box" or frame enclosing the servo, you can arrange for a technic pin or hole directly opposite the servo horn, so as to make a joint?

Thanks,

- Joe

Gordon McComb · Answer

I wouldn't know. Maybe you'll get lucky. All I did was put the two mounting holes a LEGO-happy distance apart. There's probably a multitude of ways people may want to use it. At the time I envisioned the mounts for continuous rotation servos.

-- Gordon

Joe Strout · Answer

OK, probably not, then.  :)  But it's still a cool part.Thanks,- Joe

Jason S. Mantor · Answer

Gordon,	I tried to contact you a while back via the email on the contact page asking if you had any cad drawings of this servo mount, but didn't hear back : (  I'd like to import it or recreate in LDRAW so that people can use it easily in their Lego creations.  So, got any cad or dimensional drawings I can work from ?	Thanks	-JSMGord

Gordon McComb · Answer

Heavy spam filters. Sorry.My CAD drawings end up going to CAM files, and they have offsets for arouter with a 1/8" bit (plus a slight adjustment forexpansion/contraction caused by heat). Because of this they are notdimensionally meaningful outside my CAD/CAM setup. You'd get moreaccuracy measuring one of the brackets using an old wooden yardstick!-- Gordon

Jason S. Mantor · Answer

OK, but I think I'll use my el cheapo digital calipers : )

using standard servos with LEGO parts?

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