At 12:52 PM 3/5/03 -0800, John Pearson wrote: >How long of a wire is it safe to send servo signals? > >Since the signal is 0-5Vdc and the pulse widths are in mSecs, would 5 or 6 >feet be safe from a pic or atmel I/O pin. You can go tens or hundreds of feet with no problem other than power. Be careful of how much voltage gets dropped across the ground wire - if the ground is too thin and/or too long, the current consumed by the servo motor will cause the signal seen at the input of the servo to change (and maybe even go negative) which causes all kinds of problems. I'd put a small resistor (470R) in series with the line near the PIC - this helps protect against accidents. If you have to go really far, use a separate power supply near the servo and just send the PWM signal and ground. Hundreds of feet is no problem doing this. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 19 years of Engineering Innovation (1984 - 2003) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.