What you said sounds so easy ;> If we could only reproduce it while at the office... even while at the PIC. We only notice the problems when remotely logged in. For the first time yesterday we had it happen in the office. Either way, I'll get you that information. Thanks for all the quick responses! Everytime I see an incoming mail I hope this might be "the one" :> Quintin Beukes On Tue, Sep 22, 2009 at 5:25 PM, Tony Vandiver wrote: > Make sure fuse settings actually set MCLR to an I/O port. =A0Remove the > led if necessary and pull MCLR to VCC just to be sure the same issue > exists when using MCLR as a reset line. =A0Is there any ripple on the > supply? =A0What kind of oscillator are you using (what's the load > capacitance), and does it have capacitors from each side to ground, and > if so what value? =A0Is there any resistance across the crystal? =A0A > schematic and graphic of the board layout including ground plane would > help. =A0Since you have serial communication that can help you debug, > change the code to show the reset source on powerup through the serial > port so you can figure out why it's resetting. > > Tony > > > Picbits Sales wrote: >> I've seen this happen a lot in PICs that aren't adequately decoupled. >> >> Check you have a decoupling capacitor (or capacitors) as close to the po= wer >> pins as possible. Try the circuit with a 100nF + 10nF + 1nF in parallel = to >> the power pins. >> >> Are you using an internal or external oscillator ? It could be the >> oscillator design becomes unstable when the extra capacitance of the hum= an >> body enters the equation. >> >> Dom >> >> ----- Original Message ----- >> From: "Quintin Beukes" >> To: >> Sent: Tuesday, September 22, 2009 3:39 PM >> Subject: Static Reboot >> >> >> >>> Hey, >>> >>> We discovered a very odd problem with our PIC18LF2520's. When you >>> approach the PIC it reboots. With some experimentation we found that >>> it's because of sensitivity to static electricity. In other words >>> grounding onself it doesn't happen, and deliberate charging causes the >>> PIC to reboot at physically further distances depending on the amount of >>> charge you're carrying. >>> >>> This is bad. >>> >>> >> >> >> > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist