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Topic: how do I get arduino to read black and white? (Read 1 time) previous topic - next topic


I have this idea for a black and white photograph to be scrolled across in front of a sensor which reads the shade of black/white at any point in time and send this data to arduino.

a) what kind of sensor do I need?
b) can this sensor read 'shades' or can it only tell if it's black or white?



If I understand correctly you want to build some sort of greyscale scanner?
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)


Yes. A greyscale scanner is what I'm after. So I would need to build it? There's nothing already on the market?


There's nothing already on the market?

Yes, they're called "scanners" or "fax machines".
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.


A QTI Sensor can tells shades of gray if you hook it up to an analog pin.  Of you could overkill it and get a Linescan Imaging Sensor that pretty much takes a picture of your picture and saves it.  Or, you could buy a light to frequency IC (TSL230R) and get your math on.

...or you could just scan it.  You've got some options here.

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