At 09:10 PM 10/19/00 -0400, Bob Ammerman wrote: >Here's a question/contest: > >who has built the system containing the most PICs? > >I suppose we'll need a few categories: > >Most PICs on one board I'm sure that this is NOT anywhere near what others have done, but I have one card with 8 - 12c508s on it. Its a fan controller for Komatsu earth moving machinery used in the Alberta oil sands tailings ponds. 2 of the PICs calculate and display temperature from Analog Devices TMP03 temperature sensors (engine and tranny temp), 2 more PICs read those same temperature sensors and calculate what the fan speed should be, the last 4 are 25 KHz PWM controllers, each driving 2 - 24 Vdc 5.5 Amp fans (total of 8 fans). I used separate PWM controllers so that a failure on one output wouldn't shut the whole works down. The only on-going problems with it are terminal failure (Phoenix, Wieland, Weidmeuler have all failed) and temp sensor failures (broken wires). The vibration is incredible! dwayne Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 16 years of Engineering Innovation (1984 - 2000) * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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: PICList Posts must start with ONE topic: "[PIC]:","[SX]:","[AVR]:" =uP ONLY! "[EE]:","[OT]:" =Other "[BUY]:","[AD]:" =Ads