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Joined: Thu Jul 29, 2021 10:33 am

(Beginner) servo motor arm and toggle switch

Thu Jul 29, 2021 10:57 am

Hey guys,

I'm trying to make an arm toggle a switch and it seems that the switch is stronger than what servo motor (or the arm) can handle. The arm can reach that switch but never able to toggle it. What can I do in this case? should I use another toggle? is there anything I can do to make the arm stronger.

I know it's a noob question and I appreciate the help.


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Location: Mansfield UK

Re: (Beginner) servo motor arm and toggle switch

Thu Jul 29, 2021 12:57 pm


So you cant make a servo stronger , unless you replace the existing servo with a more powerful one.

If you can find a toggle switch with a softer action you might get your existing servo to do the job.

Is there a reason your need to activate an actual toggle switch ?
or could you just replace it with a micro switch


or even a relay for example.
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Location: Stuttgart Germany
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Re: (Beginner) servo motor arm and toggle switch

Thu Jul 29, 2021 8:56 pm

Those servo have limited torque. See
If you increase the length of the arm, the force available decreases.
If you do not want to exchange the servo with a more powerful one, then decrease the length of the arm.
Here a quick sketch how you could achieve this
20210729_224454.jpg (26.69 KiB) Viewed 352 times
Look for a thin tube of stiff plastic, drill a 1mm hole at one end. Steel wire of 1mm can be bent easily to get the needed shape. Use the plastic lever on the servo to push/pull the wire. Of course servo and switch need to be placed on a piece of plywood, in a box or alike to have the needed stability.

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