Need USB LPT drivers

dyter · Post by **dyter** » February 24th, 2009, 6:47 pm

Hi,

There is a lot of low cost USB-LPT adapter on Ebay

I need drivers for this:

http://cgi.ebay.fr/Cable-adaptateur-USB ... 240%3A1318

or where can I buy a all ready USB-LPT adapter ?

Thanks

Post by **mattcro** » February 24th, 2009, 9:51 pm

This probably won't work for connecting an LCD via USB!! Other people on this forum have tried USB>LPT adapters and they didn't work, because the adapter is not a true LPT port, it just emulates the printer port functions in Windows.

You need to use either motherboard parallel port or a PCI card parallel port for connecting an LCD.

Alternatively you can try the FTDI USB adapter project on this forum: http://forums.lcdsmartie.org/viewtopic.php?t=1540

dyter · Post by **dyter** » February 25th, 2009, 11:16 am

I found usb display driver:

banusblcd.dll
FTDI_LCD.dll
HD44780usb.dll
USB_LCD.dll

but nothing work !

Why nobody program this drivers, it's cost <5? !?

Post by **limbo** » February 25th, 2009, 12:57 pm

dyter wrote:I found usb display driver:

banusblcd.dll
FTDI_LCD.dll
HD44780usb.dll
USB_LCD.dll

but nothing work !

Why nobody program this drivers, it's cost <5? !?

I have tested one of these adaptors and I have to inform you that this adaptor adds "USB printing support device" to your system. Not a pure parallel port. It is a hardware limitation. You can't use this adaptor for LCD modules. In order to use an LCD module with usb connection you have to use an FTDI chip: http://www.ftdichip.com/Products/Evalua ... UM245R.htm

dyter · Post by **dyter** » February 25th, 2009, 1:04 pm

Thanks for your quick answer,

Is this ok ?:

http://cgi.ebay.fr/FTDI-UM245R-USB-Para ... 0345141792

or where can I buy a FT245R chip ?

Bellerophon · Post by **Bellerophon** » February 25th, 2009, 1:46 pm

same problem here. has anybody managed to get anywhere with this or is it a dead duck?

Can anyone suggest a cheap place to get a cheap printer card that will work with this lcd if the above will not work.

dyter · Post by **dyter** » February 25th, 2009, 10:38 pm

I found this:

http://cgi.ebay.fr/ws/eBayISAPI.dll?Vie ... 2759.l1259

but I don't know if any display drivers work

Post by **caesar** » February 25th, 2009, 11:41 pm

no specific driver, just the generic serial test driver will work.

Anyway, that product is connecting in 4-bit mode to the display, at 9600bps, it's very slow (no winamp spectrum possible).

Bellerophon · Post by **Bellerophon** » February 26th, 2009, 1:08 am

caesar wrote:no specific driver, just the generic serial test driver will work.

Anyway, that product is connecting in 4-bit mode to the display, at 9600bps, it's very slow (no winamp spectrum possible).

are you saying that this

generic serial test driver

solves my problems.

Where would I get it from? How do I implement this on my system?

THX

Post by **caesar** » February 26th, 2009, 8:33 am

I am just saying that this USB to serial LCD adapter

dyter wrote:I found this:
http://cgi.ebay.fr/ws/eBayISAPI.dll?Vie ... 2759.l1259

will work with the serial test driver (very slowly and no custom characters are available).

It would be better and cheaper to wire yourself a FTDI adapter to the LCD like in this post here: http://forums.lcdsmartie.org/viewtopic.php?t=1540

dyter · Post by **dyter** » February 26th, 2009, 8:57 am

but it's support Parallax LCD Character Creator (LCDCC) and LCD Custom Character for Windows.
I don't understand, this circuit as a ft232 chip, but it as additionnaly an interesting 16F628,
FTDI_LCD.dll display driver don't work with this circuit !?

I finally bought a UM245R module here http://www.ftdichip.fr/ ...

LCD Smartie

Need USB LPT drivers

Need USB LPT drivers

same problem here

?????????