Yahoo Groups archive

AVR-Chat

Index last updated: 2026-04-28 22:41 UTC

Message

Re: [AVR-Chat] What crystals/resonators do you'll use?

2005-07-04 by Pigeon

Hmm. I have none of that extra hardware..
I will go with the 33pF like Kathy.
Even if the 27pF was perfect'', this would still be a better solution that going with ceramic resonators?
Oh yeah, I was thinking about going with something like an Crystal Oscillator Modules.. but I couldn't find these on digikey.. How much do these normally run and where can I get a dip ver?
thanks
Lee
----- Original Message -----
Sent: Monday, July 04, 2005 5:13 PM
Subject: Re: [AVR-Chat] What crystals/resonators do you'll use?

At 04:08 PM 7/4/2005, Pigeon wrote:
Yes, all the crystals said 18pF (I take it, that that is all Ineed to know to know what caps I need?)

Also.. I have no scope. How will I see what ones are closer?

Do you have a shortwave radio with BFO?

A frequency counter?

Other than that, you'll have to rely on a carefully constructed software loop that executes a known number of cycles, or a timer routine that divides down the crystal, either way, you then toggle an output pin at some reasonable rate, like once a second, and then count the results over a long time.

You adjust your debugging tools to what you have on hand, or what you can easily get.


Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.