Hi all,
the readers of lcd4linux-devel have already heard about this,
but since my girlfriend successfully assembled and of these
devices today it was time to go from devel to users ...
So here it is: lcd2usb, the open source/open hardware
hd44780 to usb interface:
http://www.harbaum.org/till/lcd2usb
The lcd2usb interface is supported by the current CVS
version of lcd4linux.
I have 25 spare pcbs which i am willing to sale for 15 Euros
each. These are _empty_ pcbs, you'll have to add the parts
youself. The most expensive part will be the atmega8 cpu
which costs about EUR 2.70, so the whole system is rather
cheap and even cheaper than most rs232 solutions. Besides
soldering the thingy together you'll have to upload a firmware
onto the cpu. This requires a special printer port adapter or
some other way to flash the avr mega8 cpu. I have a limited
number of spare cpus that i may be selling together with
the pcbs.
There's a libusb based demo program in the lcd2usb archive.
This program currently supports linux and windows since
the underlying libusb is available for both systems. MacOS
should work as well, but i haven't tested this yet.
This device does not work with anything else than a hd44780
based text display. It is possible to build a very similar hardware
to support graphic displays like e.g. the TC6863 based displays.
I don't own such a display. If you are interested in getting a
version for uch a display you can either grab my files and
convert it into the desired version or send me some of the
the displays you'd like to have a version for. Please drop
me an email in that case.
Ciao,
Till
--
Dr.Ing. Till Harbaum <ti...@ha...>
http://www.harbaum.org/till
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