Newbie found VFD in the trash

pedritox · Post by **pedritox** » March 24th, 2008, 4:42 am

I found a VFD display (Partnertech CD7220) from an old POS terminal (POS = Point of Sale) I had good look at the interface board found out its was 12V applied dc power to and then had to play with the wiring a little further to get serial connectivity, but it is working well.

I have no idea what the controller chip is as it buried under the VFD tube, so without de-soldering the tube I had no idea what display plugin to use, I have used testdriver.dll and testdriver.ini to get it to work.

testdriver.ini is:

[Test Driver]
Init=27,42,4
Fini=27,42,1,12
GotoLine1=27,91,72,27,91,76
GotoLine2=27,91,75,27,91,76

I have the manual it says how to do send custom char does not seem to work, would appreciate help with this if anyone can.

pictures available if anybody wants to see.

Miles_123 · Post by **Miles_123** » April 6th, 2008, 4:59 am

I also have a vfd from a pos terminal too, also interested in custom chars.

Currently battling with my test driver. After a long period of time the text shifts.

Post by **mattcro** » April 6th, 2008, 5:00 pm

As far as I know, there is no support for custom characters in the test driver, so you're out of luck unless you go the whole hog and write a driver for it. That's probably not a lot of work if you can program in Delphi/C/C#, since there are several drivers on the forum that have source code showing how to send data to the serial port.