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Author Topic: need access to pin 8  (Read 4293 times)
megabytemike
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« on: May 17, 2010, 04:20:55 PM »

I'm currently working on a project that makes use of ICR interrupts on my arduino.  To my knowledge, the interrupt capture pin is only available on pin 8 of the arduino.  This apparently conflicts with the arduinix board.  As far as I can tell arduino pin 8 connects to pin 6 of the second 74141N driver.

According to the schematic though, arduino pin 13 is connected to pin 3 of the first 74141N driver.  Looking over the 6 bulb code however, pin 13 isn't used.  Would it be possible for me to jump 13 to the pin 6 of the 74141N driver, or is pin 13 really being used?
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nonentity
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« Reply #1 on: May 17, 2010, 05:33:23 PM »

I'm currently working on a project that makes use of ICR interrupts on my arduino.  To my knowledge, the interrupt capture pin is only available on pin 8 of the arduino.  This apparently conflicts with the arduinix board.  As far as I can tell arduino pin 8 connects to pin 6 of the second 74141N driver.

According to the schematic though, arduino pin 13 is connected to pin 3 of the first 74141N driver.  Looking over the 6 bulb code however, pin 13 isn't used.  Would it be possible for me to jump 13 to the pin 6 of the 74141N driver, or is pin 13 really being used?

Hey Mike,

I am not where I can check right now, but the best way to try it would be to.. try it Smiley

You can use a multimeter on that pin to see if it's being sent any kind of signal, and if not, you can jumper things the way you're talking.  Should be fine to re route things.
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Emblazed
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« Reply #2 on: August 20, 2010, 08:48:03 AM »

Mega, Im with nonentity, give it a try. I think you will find that you are correct and this will work.

..

Emblazed.
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