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Topic: Alternative to clock crystal. (Read 1 time) previous topic - next topic

jaredpi

Hello,
I am trying to set an arduino on a breadboard (http://arduino.cc/en/Main/Standalone) and was wondering if there is any alternative to using a clock crystal? The reason why I ask is that my local electronics store doesn't have them and I do not want to have to order online (b/c shipping is too expensive).
Thanks in advance,
Jared

Osgeld

if your able to change the fuses you can run the chip using the internal 8Mhz oscillator

jaredpi

Quote
if your able to change the fuses you can run the chip using the internal 8Mhz oscillator

How do change the fuses?

Udo Klein

You need and ISP. Then you can change them with avr studio or with avrdude from the commandline. In the second case google for "avr fuse calculator". With regard to the meaning of the fuses: the definite guide is the datasheet.
Check out my experiments http://blog.blinkenlight.net

n3qik


jaredpi

Quote
Can also use resonator. Will not be as stable timing wise but will work.

I think I will try that. I have a small bag of resonators from a grab bag I got and may find what I am looking for before I buy anything. The only problem is that I am not sure what the markings mean. XD
thanks,
Jared

n3qik

Take some very clear pictures and post here. Lots of smart people here on this board to help out.

jaredpi

Quote
Take some very clear pictures and post here

I have tried before, but cannot put any pictures on.
Here is an example of one: 271
                                      100v
I know the latter one is probably a voltage rating, but I'm not sure what the first is.


Constantin


oscillators are 3 pin packages, what you discribe is a capacitor

Yup, three pins in a row, usually poking out of a yellow or blue blob. Rat Shack may still carry them, if so, use a 16MHz one for easiest compatibility with existing Arduino board configurations. Also have a look at the RBBB arduino from modern devices, it's as bare as it gets.

jaredpi

#10
Sep 05, 2012, 11:05 pm Last Edit: Sep 06, 2012, 01:07 am by jaredpi Reason: 1
Quote
oscillators are 3 pin packages, what you discribe is a capacitor

No, it has three pins. Also, I remember reading somewhere that the exact value (16 MHz) of the crystal doesn't matter. If this is true, what is the margin of error (for lack of a better word) and does that also apply to oscillator as well.

wwbrown

jaredpi,

If you do not have the correct resonator in your grab bag let me know and I will drop a couple 16 MHz resonators in an envelope for you.

wade

jaredpi

Quote
If you do not have the correct resonator in your grab bag let me know and I will drop a couple 16 MHz resonators in an envelope for you.

Thanks a lot for the offer, but I was recently looking at some other threads and found out about dipmicro (http://www.dipmicro.com/store/) and the shipping is so inexpensive that I will just order from them.
Thanks,
Jared

Docedison

I have both clock oscillators at 16 Mhz as well as 16 Mhzcrystals, Your local store Mar Vac's usually doesn't have anything... I have been shopping there for 25 years. I live at State College and Ball Rd and I can leave them at the 7/11 (one block from my house) and you can pick them up... Free. I do have a lot more than I will ever use... in the rest of my life time. I need to tell you that these parts are new and unused and I get them for free from a contact I have in Shenzhen China...

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

jaredpi

Thanks a lot for the offer Docedison, but I ordered one about 2 hours before you posted (another example of Murphy's Law).
Thanks,
Jared

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