[MazdaMatt]

Originally Posted by motor_control

I've sugest you great tool - USB Logic Analyzer

SparkFun Electronics - USB Logic Analyzer

Check out the video of the Logic Analyzer in action
Logic Videos

I have used this and it is spectacular. However, it is useless for analog stuff. It is best suited to digital timing analysis and logging communication over I2C, SPI, UART, etc, or watching parallel busses pass information.

Paul could use it to watch the UART, the PWM output from the cpu (NOT THE DRIVER) and the hardware current limit. That's about all.