Can Arduino print a bmp file on 32x32 LED

by ttallos on Sun Sep 16, 2012 9:54 pm

Is it possable to make an arduino print a bmp file on a 32x32 LED matrix if not how can this be done?
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Re: Can Arduino print a bmp file on 32x32 LED

by pburgess on Sun Sep 16, 2012 11:23 pm

Not directly from an SD card...there's not enough RAM nor enough I/O pins to both read an SD card and drive the 32x32 matrix (if we're talking about this item).

However, for small BMP files, it's possible to pre-convert an image into a format that can be stored in the Arduino's flash program space. This has some limitations though...each image requires about 1.5K of space, and there's less than 32K available on the Arduino Uno.

It might be a task better handled by a Propeller or other beefy microcontroller, but at present the example code is all Arduino-based.
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Re: Can Arduino print a bmp file on 32x32 LED

by RJeffway on Tue Jan 29, 2013 6:09 pm

Hi, Got my 32x32 Matrix Display, and got it working great first time! Thanks for the excellent documentation! Is there a utility outhere that would allow me to convert a BMP or GIP to the hex format so I as you say "pre-convert" my image? My goal is to be able to create images to display on the 32x32 in an easy way with say Photoshop. Any suggestions would be appreciated. Thanks, Bob
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