while driving a motor with PWM, many say to set the freq above the audible hearing range, but in many cases isnt the motor loud enough that it covers the harmonics created by the PWM drive? -- View this message in context: http://www.nabble.com/multi-dc-motor-control-tp18619878p18662047.html Sent from the PIC - [PIC] mailing list archive at Nabble.com. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist