Hello Picsters, I am trying to figure out how to use the pwm "hardware" from within PBASIC Pro. It would appear that I need to use some assembly code in order to utilize this hardware (and this is not my area of expertise). If anyone is interested in helping me with this off-line I will give that individual a complete robot chassis with motors for the effort. If you would like a picture of the chassis assembly email me directly and I'll email it promptly. The PIC I am using is a 16C73 and I need to keep track of two encoders (single channel) and vary the PWM ratio based on feedback from those encoders. Additionally the PIC needs to be addressable serially to receive the desired move. Please keep responses regarding interest in the robot chassis off list but if you have any general suggestions that the list may find helpful so be it. Thanks for the bandwidth, Bill R.