How to Build Your Own Car Robot - Part2: Enable movement


In the previous blog post , we showed how you can use Piper to build a chassis for your car robot. In this post, we explain how you can enable movement in your car by adding motors. Motors are electronic devices that convert electrical energy to mechanical. Batteries store electrical energy and can be used to power motors. 


Step 1: Add motors

Use mounting tape or glue to attach the motors to the underside of the chassis. 



Once the motors are mounted, install the tires on the motors. Then push the motor wires through the body holes to bring them to the top side of the car.


Step 2: Add caster wheel

Using glue or mounting tape, attach the caster wheel to the front of the car to give it free movement. To adjust the height of the car, you can also 3d print an extra part to add height to the caster. 



Step 3: Wiring up

To power the motors we need to connect the motor wires to the battery pack. The wires need to be connected correctly.  

Notice that to have both the tires turning clockwise we need to have the motors run at different polarities. The switch connected to the battery is sometimes placed inside with the battery casing as shown below.




4) Testing

Flip the toggle switch on the and watch the car go crazy!!


See if you can make the car go backwards and turn left and right by changing the wire connections on the breadboard!! This is important in understanding how the car can be controlled to move in any direction. More on this later ☺


Congratulations on making yourself a toy car. In our next tutorial, we'll show you how to upgrade this to a car robot that you can control and program!!