LCD for appliance


New member
Hi all,
I'd like to use crystalfontz display on some appliance to view (serial number, eth stat, CPU usage, memory usage, IP settings and a default logo) and specially to configure trough the LCD button the IP config (IP, netmask, gw, DNS) of linux systems (CentOS, Ubuntu).
I read lot of post but I'm not able to find a solution.
There's a display type like CFA533/CFA633 or other useful for my scope and also driver/software to permit view and edit of Linux settings?

Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.
Last edited:

CF Support2

Our intelligent modules with keypad have been integrated into a number of different appliances over the years.

Our CFA63x modules are supported under LINUX from a driver stand-point. The language you write your application in does not matter as long as you are able to communicate with a COM port and send commands to the module, or in the case of the CFA631, CFA533/633, and CFA635, receive input from the module.

As of 2.4.26, the FTDI_SIO files have been part of the kernel. Prior to that, you will need to get the FTDI_SIO files from, and then re-compile your kernel in order to communicate with your USB Module.

In case you need to recompile or do some tweaking here is a list of our VID and PID:

VID_0403&PID_FC08.DeviceDesc="Crystalfontz CFA632-USB"
VID_0403&PID_FC09.DeviceDesc="Crystalfontz CFA634-USB"
VID_0403&PID_FC0B.DeviceDesc="Crystalfontz CFA633-USB"
VID_0403&PID_FC0C.DeviceDesc="Crystalfontz CFA631-USB"
VID_0403&PID_FC0D.DeviceDesc="Crystalfontz CFA635-USB"

Here are some forum threads with sample Drive Header:

Simple Linux C Driver / Header for CFA635 - with ARM compatible code as well:

A link another customer has sent with some good information:

You might want to take a look at these Linux programs:

Our demonstration code is in C, and is a simple, commandline example program:

Here are a few threads in our tech forums regarding Python:

And a few referencing PERL:

Please let me know if you have any questions.

Thank you.


New member
Thank you for you reply but I was looking for a solution is already running on your display because I'm not a code developer.
We would like to implement your displays on our appliances, but we will not develop from scratch, we are looking for a finished product.


CF Support2

Our intelligent USB and Serial modules are intelligent in that they are able to do what they are told to do. They all require a host application to tell them what to display, or accept input for the keypad. We do not have a complete application that will do everything you want it to do - but we do have the tools and ability to support making one.