Will this fry my CPU?

[Graham]

I have never used a resistor across the crystal pins as in

oscillator_with_resistor.jpg

and I am curious as to the purpose of that. I've seen it in other schematics as well.

Interesting. Not having seen it in datasheets before - I have never used it.

Perhaps its a manufacturer recommended component for some crystal oscillators? In any case, yet to have that happen

[be80be]

TYPICAL PIERCE PARALLEL RESONANT OSCILLATOR CIRCUIT

use crystal pins as in
oscillator_with_resistor.jpg to lower or stabilize your crystal and for what i quoted http://ww1.microchip.com/downloads/en/A ... 00838a.pdf

[hop]

Interesting. I added that PDF to my data sheets collection, thank you. I noticed though that the title of that page referred to 16/17 series. Thanks as always be80be for clarifying.

[Jhackulon]

Hi, Sorry its taken so long for me to work stuff out.
Frankly I think that USB is too advanced for hobby projects, its a much better idea to try RS-232 instead as Graham excelently shows us how to. If your computer dosen't have a serial port like mine then you should get a serial-usb converter http://www.jaycar.com.au/productView.asp?ID=XC4834. Anyway, serial is also much easier to program with (works with VB.NET).

[charliem]

Yea I would lose the resistor.Don't really know why its there.

[silvering]

That is my problem big time too.i have search it in soucinggate or ebay ,but it still get work.anyone can help?thanks!!

[Graham]

Sorry silvering, there's a couple of things going on here - what was it you were looking for on ebay?