NXT Lawn Mower

In the following pages, you will be creating a robot using Mindstorms NXT LEGOs, adding a third motor to the bottom of your robot which will have a "blade" attached.  At the end, there will be additional instructions for making a remote control for the lawnmower, as well as program files for the mower and remote control. 

The design for this robot was done by Dawson, a student at SES.

Let's get started!

Step 1

In this step, you will be adding wheels to two of our NXT motors.  Remember to pause the video if you need to; you can watch it as many times as you need to!  When you're ready, head on to step 2!

Step 2

In this quick step, we will we attaching our motors to the NXT brick, giving us the front wheels and the base of the lawn mower.  Scroll down to move on to step 3 when you are ready.

Step 3

Step 3 is where it gets a little crazy.  We will be adding the lawn mower blade to the bottom of your lawn mower base.  When you are done, head over to step 4!

Step 4

Thankfully, step 4 is a little easier than step 3.  Here we will be building a "bridge" to the back of our mower, so we can attach another wheel in the back.  We'll learn how to add the wheel in step 5.

Step 5

As promised, we will be adding a free wheel in the back of our lawn mower to keep it from tipping back.  After this we only have one more step to go!

Step 6

Last step!  And it's an easy one!  All we need to do is connect the motors to the NXT bricks with cables.  Here we go!