I changed the schematic to use the "standard" op-amp symbol. Is it more readable now? http://www.roboticsguy.com/images/misc/balancing_robot/balancing-robot-boar= d-schematic-r11.png http://www.roboticsguy.com/images/misc/balancing_robot/balancing-robot-boar= d-pcb-r11.png I put a 10uF capacitor between the power connector and the sn754410 (which is the only place VCC is used). Do you think that is enough, or should I put a few 10uF caps in parallel? I figured it would be pointless to put a .1uF bypass cap by the VCC input on the sn754410 since the motors draw up to an amp, but I could put one of those on there, too, if you think it would be a good idea. Here are the Eagle files if anyone feels like taking a closer look.. http://roboticsguy.com/files/balancing_robot_2550.zip Appreciate all of your advice! --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .