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 Post subject: serial t23a connection
PostPosted: Mon Jan 31, 2005 17:51 
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Joined: Thu Jan 20, 2005 18:39
Posts: 10
Can someone tell me how to connect the Noritake T23A via serial. I've only been able to find parallel connection info.


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PostPosted: Thu Feb 03, 2005 0:50 
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Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland
It just needs a level converter with MAX232 or some equivalent function IC.

The serial input pin is pin 11 in the IDC data connector or then the middle pin in the 3 pin power connector. You can use either one of these.

Here is an example using MAX232:
http://chaokhun.kmitl.ac.th/~kswichit/MAX232/MAX232.htm

So you just connect the signal coming from the PC serial port TXD pin through the level converter to the VFD serial input pin.


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PostPosted: Mon Mar 07, 2005 19:59 
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Joined: Thu Jan 20, 2005 18:39
Posts: 10
Thanks Henri. Is there a benefit to serial. Lower CPU usage? High compatability? Easier to program?


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PostPosted: Mon Mar 07, 2005 22:52 
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Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland
I don't know if there's that much benefit using serial. Parallel should be faster but with a character display like this speed should't be a problem. Someone might like to connect it to serial port and someone to parallel.

Then there's of course the issue that some PC's don't have parallel port. Anyway if you have a display wired with either way and it's working I don't see reason to change. Also if you're just planning to wire the display it's up to you to decide which method to use. There shouldn't be any difference in functionality.


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