LCD 2 USB by Atmel AVR Mega8 CPU
LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like.
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Read More source:
http://www.harbaum.org/till/lcd2usb/index.shtml
Thank you.
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