Let's Make Robots!

Arduino Duemilanove and Ardumoto SparkFun Motor Shield help

Hello all... first post on here :)

 

I am very new to Arduino and coding, for the past few days I have been struggling with some code. I am working towards a small Arduino based rover with two DC motor for movement control. Before I build a body and all that fun stuff I wanted to get basic controls working.

With the code below I can move forward, backward and the BR200# and so on...  (RB case) all work. When I try BF200# nothing happens.. I thought it might be due to the LOW settings on both motors as the HIGH HIGH works ok.