Inverted text

The Dot Matrix Display (DMD) is a 32x16 array of high-brightness LEDs for visually striking effects. [Product Page]
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sergantsergio
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Joined: Tue Apr 04, 2017 10:25 pm

Inverted text

Post by sergantsergio » Tue Apr 04, 2017 10:35 pm

Hello! I have a monochrome P10 yellow matrix and I connected it to my arduino uno. The DMD2 lib sketches are compiling and running but all characters are inverted.. I mean they are black on lit background.
Video : https://youtu.be/fXUZzK3VMNw
How can I swap it? Thank you!

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stryker
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Joined: Sat Jan 14, 2012 2:44 pm

Re: Inverted text

Post by stryker » Mon Apr 17, 2017 1:03 pm

Hi

Did you resolve this? Was the video the result of one of the DMD2 example sketches without making any changes?

Geoff

sergantsergio
Posts: 2
Joined: Tue Apr 04, 2017 10:25 pm

Re: Inverted text

Post by sergantsergio » Wed Apr 19, 2017 12:44 pm

Hi! Yes, I was using sketches provided with the library. I solved it by using dmd.drawString(x,y, Sting(string), GRAPHICS_INVERSE); and dmd.fillScreen(true); in setup(). fillScreen(true) must turn on all leds, but in my case it does the opposite. My matrix must be somehow inverted... I'm using yellow P10 with smd leds.

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stryker
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Re: Inverted text

Post by stryker » Wed Apr 19, 2017 12:55 pm

That is richly bizarre. Glad you sorted it with a workaround.

tommy_ent
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Joined: Mon Apr 29, 2019 7:51 pm

Re: Inverted text

Post by tommy_ent » Tue Apr 30, 2019 6:31 pm

This may be a dumb question, but how do I invert the graphics with scrolling copy? My background is lit and the copy is black, but I can't find where I would insert the GRAPHICS_INVERSE code when i'm using the scrolling function.

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