Let's Make Robots!
This is my first robot and I am quite pleased with it. I use a standard remote to control forward, backward, left, right, and stop. I put together the simple … Read more

4 wheels vs. 2 wheels

Was planning to start my first robot using a picaxe 28x1 kit I bought.

I was going to get my wheels from solarbotics as they have pre mounted

motor-gears-and wheels assemblies. I wanted to make it four wheels

but noticed a lot of people use 2 wheels with a third ball roller. Why is this?

Also what is the best place to shop for robot supplies? Thanks!

 

-Bryan

Range Finders

Ok so I just posted a question about wheels and now I'm on to

my next component in my first robot..range finders.

I see the SRF05 is popular which I can purchase here..http://www.hobbyengineering.com/H2262.html

 

They also seem to have a bunch of others like SRF04 and SRF08, anyone care to break

down the difference for me?

 

Next I see this sensor which also looks nice using 3 pins..the ping sensor..http://www.hobbyengineering.com/H2951.html

on a PICAXE 28x1 which will be my best bet?