Hello,
I have an I/O expansion that I can't seem to get working as expected. The chip is the 328P, which, I believe, indicates this is a v1.0 module, correct?
When I load up the I/O expansion example code and hook up a float switch to one of the inputs, I don't seem to see any change to the status of the input represented on the display. They all continue to show green. I have also tried multiple float switches, so I don't believe they are the issue.
If I disconnect the module, all of the inputs turn red, so I assume it's recognizing the module itself.
I am happy to debug further if someone is able to provide some next steps.
Thanks,
-Steve
I/O Expansion Issue?
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Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
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Are you closing the i/o channel to ground?
Roberto.
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Posts: 93
Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
I have one side of the switch in I/O port 0 and the the other side connected to ground, so yes, it should close to ground. I have also tried just jumping between the I/O port and ground, and I still see no indication of it working.
With the I/O expansion connected and no switches attached, should all the inputs on the display show green in the example code? I would think they'd turn green only when a switch is activated. Thanks, -Steve |
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Posts: 93
Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
Anyone have any thoughts?
I picked this expansion module up from another reefer, but it's the old style (v1.0) and has no exterior labels. Looking at the "documentation" for the I/O expansion on the website, it shows that it now has a DC connector input. However, this older style module only has a USB connector. Opening it up, I see that it has the 328P chip, which I assumed meant that it's an I/O expansion. And the inputs in the example code turn green when I plug the module in, reinforcing this. Is there any chance that this is a dimming expansion and not an I/O expansion? They look very similar from the outside. |
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Posts: 93
Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
Is anyone able to help out here? What additional debugging can I do? Can anyone point me to another thread, for example? I really need this module working in order to move my project forward. Thanks.
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Can you send me a photo of the board?
Roberto.
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Posts: 93
Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
Exterior:
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Looks like it is configured to be I/O.
Not sure what is going on. Roberto.
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Posts: 93
Joined: Mon Sep 17, 2012 12:41 pm Location: Lincoln Park, Chicago, IL, USA 60614 |
Any further way to debug, other than hooking it up to the controller?
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If you want, you can debug just the module using Arduino, since this old module has a built-in mcu in it.
The original firmware is:
Roberto.
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