Hi,
See the product below. Build something similar could be the next step?
Luciano
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http://www.lcd-module.de/eng/pdf/grafik/edip240-7e.pdf
EA eDIP240-7 is the world’s first display with integrated intelligence!
As well as a number of built-in fonts which can be used with pixel accuracy
it also features a whole range of sophisticated graphics functions.
Supplied with 5V, the display is ready for operation immediately.
It is controlled via one of the 3 integrated RS-232, SPI or I²C interfaces.
Graphics commands similar to high-level languages are used for programming.
There is no longer any need for the time-consuming programming of character
sets and graphics routines. The ease of use of this display with its
touch panel reduces development time dramatically.
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