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This is based off of the "First Robot" tutorial and uses the Arduino Decima board instead of Picaxe; it's also the first robot I've ever built. The Arduino board doesn't have a dedicated slot for the motor driver chip, so it had to be on it's own board. After doing that I decided to make that board the main one and use several pin/header rows to connect it to the Arduino board and peripherals (sensor, servo, motors). This way I could easily unplug the motor when I wanted to test the servo ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/my-first-robot-with-arduino