Anyone know what LED driver IC is used in the RGB controller? Its not marked on the schematics.
Thanks,
Vern
Judging from the diodes shown in the diagram, and something I read somewhere about it being a motor driver, I assume it is something similar to a [ULN2803 Darlington Array.](http://www.sparkfun.com/commerce/product_info.php?products_id=312)
Thanks lou, I am always interested in different ways to power bunches of LEDs.
Vern
Delicon,
Have you used this backpack controller yet? I bought 2 of them and having problems with a ghosted image offset of the text being sent across to it. Anything more than 64 bytes being sent to the controller causes this. I see this on 1 or 2 of them (cascaded DO to DI).
Have you seen this?
Well I found out that my problem with the ghosting was because of the microcontroller running faster than 125 KHz or so. I had it set to 4 MHz. However, now the scanning is so slow that it is nowhere’s near being “smooth” - refresh is very observable.
I set the DEVICE and FREQ as below:
DEVICE SX28, OSC128KHZ, TURBO, STACKX, OPTIONX
FREQ 128_000
Now what?
Hello,
Do you have this problem yet?
Unfortunately it gave me too many headaches and I did not want to invest any more time into that. Great display though. If you are using SX/B (BASIC) for a Parallax SX-28 or SX-48 micro-controller, I can email you what I originally wrote if you like.
I’m using it with an arduino.
It works fine with my configuration:
i’m using a special firmware on my arduino + serial/OSC router + monome-like protocol
if you’re interested, i’ll post VERY soon my last release:
http://www.julienbayle.net/diy/LiveInterface/
it could be a way to control your matrix
I was posting that because I 'm hesitating with the serial router, cause of performance
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w32 router (got the source, trying to change it) => works fine but only monochrome support
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python router => rgb support, but little problem if i send A LOT of data very fast (I said VERY fast) but it works fine !
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java router (I have to code it in processing ide)