If not where can I buy them for use with the PIC microcontrollers you sell?
Crystals and resonators: http://www.sparkfun.com/commerce/categories.php?c=88
If you use a crystal instead of a resonator, you will also need a pair of capacitors: http://www.sparkfun.com/commerce/produc … ts_id=8571
Some ceramic resonators (the ones with two pins) don’t have capacitors.
Leon
leon_heller:
Some ceramic resonators (the ones with two pins) don’t have capacitors.Leon
And the three pin ones sold by SparkFun don’t require capacitors either as the capacitors are built in.
To anticipate the question from the OP regarding the differences between resonators and crystals, both perform the same function. Resonators are cheaper and perhaps a little more rugged, but they aren’t as accurate in keeping the frequency. The frequency tolerances for resonators aren’t bad, but crystal tolerances are about 10 times tighter (for example, for a clock that would drift .1 second per day with a crystal might drift 1 second per day with a resonator). Most of my projects use resonators and work quite well, so you don’t have to avoid their use. For critical timing applications you probably want to use a crystal.
I don’t know how I overlooked the oscillator link in the menu :oops:
Thanks!
I bought several different oscillators, but there’s a problem. The numbers on the top of the oscillators don’t match the product number on the pages.
Does anyone know what the S100ECSXR is? I think it’s the 10MHz crystal I ordered, but I’m not sure. Searching for that number in google brings up no results 
Both oscillator modules and crystals usually have the frequency clearly marked, unless they are in very small SM packages. Are you sure it isn’t present?
Leon
What are the markings on the other crystals? Perhaps you can deduce a pattern. If you can’t, why not drop SparkFun support an email and ask them? If you need an answer right away, you might consider wiring up a processor and run a simple LED blink program. You will be able to tell by the blink frequency which crystal is which.
I’m pretty sure this is the 10MHz one… But no, it’s not clearly marked:
Here is a pdf with standard frequency abbreviations.
It looks like it probably is 10 MHz, then.
Leon
falingtrea:
Here is a pdf with standard frequency abbreviations.
Nice detective work, Tim.
Thanks!