Introduction: Squirrel Chasing Robot

Picture of Squirrel Chasing Robot

Using a bunch of 3d printed parts, I made a robot to chase squirrels.
First, the nerf barrel (with a squirrel on top) rotates every 30 seconds from left, to center, then to right. If the robot detects a squirrel, stage one is initiated. The robot charges forward then retreats. If the squirrel is still detected, the robot fires a nerf dart toward the offending creature. If the pest persists, the robot blows up a balloon and (using a heated resistor) pops the balloon.

Step 1:

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First, there are a lot of parts. I used an Arduino Uno, a motor shield, a robot base (from MakerShed or Amazon), nine AA batteries, two servo motors, a pump motor (vacuum pump,, a motion detector (parallax), a ball bearing (vxb bearings) and many 3d printed parts.

The design and print files for 3d parts can be found at:

You can find someone nearby to print the files using

Step 2:

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The software and block diagrams are here.

Step 3:

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Start by assembling the robot base.

Step 4:

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Add a servo motor to the top plate.

Step 5:

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Print the squirrel barrel and paint the squirrel.

Step 6:

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Attach the servo mount to the barrel using a soldering iron to weld the parts together. Add the servo motor. It is the release mechanism for the rubber band that fires the nerf dart.

Step 7:

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Add a servo horn to the connector. Affix the connector/horn to the servo motor on the top plate.

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Add the pump holder and balloon adapter.

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Attach the bearing holder and bearing so that they line up with the servo adapter.

Step 10:

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Drill a hole through the adapter and nerf barrel. Fasten with a small bolt.

Step 11:

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Attach the pir sensor to the nerf barrel. Route the wires so that they will not bind when the assembly rotates.

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Add the front warning holder. Print and insert the "No Squirrel" warning.

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The "Balloon Popper" is a resistor on a stick. The little pump will not reliably pop balloons (at least I can't find cheap crummy balloons when I want them). After the balloon is inflated, the resistor gets hot and assures a pop.

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Put it all together and you will have the most complex, delicate, high tech squirrel repeller available.

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Yonatan24 (author)2015-11-30

This, And Nellie.

I died ;)

bcman12358 (author)2015-11-04

I have a better idea, get a small, energetic dog

-Nate125- (author)2014-09-20

It would be cool if you make it have a kinect sensor on it, my dog would go crazy!

ivver (author)2014-07-14

Make it bigger, put some gass engine on it, some machinery and scare the hell out of the chipmunks :-P

doxielover4ever (author)2014-07-10

If I could, I totally would!!! I LOVE watching squirrels get terrorized... this HAS to be better than sicking the dog on them while they are dangling from bird feeders!!!!

InvictusLupus (author)2014-07-04

I hate squirrels. Terrible creatures.

elektrikbilim (author)2014-07-04


i will try it

jessyratfink (author)2014-07-03

This is intense! TAKE IT SQUIRRELS

Wow, this is awesome! If only it worked on gophers...

About This Instructable




Bio: I am an author and a maker. My current project is Santa's Shop. I'm working on a science fiction type book--more later. @EngineerRigsby
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