How to build your first Robot ($ 85)

Step 5 Buy the materials (Motors and wheels)

2 Gear Motors with wheels
The higher the ratio, the stronger robot, the lower, the faster robot. I recommend ratio somewhere between 120:1 to 210:1 for this kind of project.

Price, total: 15 USD
Get some here

Comments

[alexanderichartill]

 where i can buy these motors in the eu

[Elliot says]

Can i use a simple not geared dc motor?

[fritsl]

No, you will need a geared motor.

[michaeldnash]

another link for those of us in the US:

http://www.pololu.com/catalog/product/181

Again, you're welcome :)

[dragonis]

Does it matter what side the motor is. I mean that if you have a right angle shaft, can you place it on the left. What's the disadvantages if you do?

[fritsl]

Place motors any way you'd like :) When you come to the programming, you are going to decide what is to turn which way no matter which way things are.