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1  Forum 2005-2010 (read only) / Interfacing / Re: 7 Segment Display using SPI on: February 20, 2010, 06:37:09 pm
Thanks guys.  As far as the wiring goes I am all set.  I have the three displays wires all on the same bus except for the Slave "CSN" wire which is on a different pin on the Arduino.  For me, that was the easy part.

The code on the other hand is what I am trying to learn how to do.  I was looking for more example code to help me figure this SPI thing out.  

@Ran, I was wondering if Slaveselect in Busaboi's code was a special function from the library, so you cleared that up for me.   And yes, I need all three displays to simultaneously display constantly updating information.

Also, Busaboi doesn't call up the SPI.h library that I have seen.  Is it unnecessary to do so?
2  Forum 2005-2010 (read only) / Interfacing / Re: 7 Segment Display using SPI on: February 20, 2010, 05:08:28 am
Hey, I got 4 of these and am still floundering a little with the SPI.

Have you used this in a project yet?  I got your code to work great, but I am trying to do some other stuff..

I have 1 arduino I want to display
       1)  Elapsed Time
       2)  Temperature
       3)  Calculation (based on those first two numbers)

The whole Master/Slave coding I haven't discovered yet.  Any help guys?

Thanks,

BLake
3  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: how many 7 segment LEDs can a arduino run? on: January 26, 2010, 02:43:49 am
These are what I was asking about.

http://www.sparkfun.com/commerce/product_info.php?products_id=9230
4  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: how many 7 segment LEDs can a arduino run? on: January 26, 2010, 02:42:12 am
Hey guys, it doesn't look like this was ever answered proper.  I have a similar need:

I need to run 3 separate 8-segment LED displays independently.  Meaning, 1) Stopwatch Timer  2)  Temperature  3)  Calculation

Is three of these overkill? Sparkfun 7-Segment Serial Display
sku: COM-09230

Can the Arduino handle all that?

Thanks!
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