Hi there!
A while ago I bought both a serial and a usb version of the 634 Display series and am running it on third pary software (jalcds) ever since.
While the serial version runs for weeks nonstop without problems, the USB version crashes on a regular basis.
Here's what happens:
On startup everything's fine, the display lights up, displays the boot screen and as soon as the software is up it starts displaying screens as requested.
After a period of time varying from 60 minutes to 10 hours however the display freezes and the software reports an error "unable to write to COM3" and crashes.
After that happens the only way to reactivate the display is to disconnect the usb, reconnect and then restart the software.
As mentioned earlier the serial version (running the same screens for the same amount of time on the same machine) will run straight through for weeks of consecutive uptime without a single error, so I see the problem in Crystalfont's USB-daughterboard.
Since I have a spare com-port and experience with a soldering iron i figured it would be easiest to just remove the daughterboard and convert the display to a serial one.
Now the question:
What else (beside tearing off the daughterboard) do I have to do to convert the USB-Display to a serial one?
Do I have to open / close any of the bridges on the back of the pcb?
A while ago I bought both a serial and a usb version of the 634 Display series and am running it on third pary software (jalcds) ever since.
While the serial version runs for weeks nonstop without problems, the USB version crashes on a regular basis.
Here's what happens:
On startup everything's fine, the display lights up, displays the boot screen and as soon as the software is up it starts displaying screens as requested.
After a period of time varying from 60 minutes to 10 hours however the display freezes and the software reports an error "unable to write to COM3" and crashes.
After that happens the only way to reactivate the display is to disconnect the usb, reconnect and then restart the software.
As mentioned earlier the serial version (running the same screens for the same amount of time on the same machine) will run straight through for weeks of consecutive uptime without a single error, so I see the problem in Crystalfont's USB-daughterboard.
Since I have a spare com-port and experience with a soldering iron i figured it would be easiest to just remove the daughterboard and convert the display to a serial one.
Now the question:
What else (beside tearing off the daughterboard) do I have to do to convert the USB-Display to a serial one?
Do I have to open / close any of the bridges on the back of the pcb?
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.