trying to connect an RS232 to an LCD screen

Thread Starter

Natsoumi

Joined Apr 2, 2009
9
hi,

im trying to connect an RS232 cable with an LCD screen cable.
im doing so in order to connect the RS232 cable to my microcontroller and display certain data.

i would appreciate any ideas as to how i can make the connection between the RS232 and the LCD screen cables.

Thank you in advance :)
 

SgtWookie

Joined Jul 17, 2007
22,210
Why don't you explain a few more things, like what microcontroller, what LCD display?
Is the RS232 cable a null modem or DTE/DCE cable?

Are you trying to communicate using the LCD's protocol, or via RS232 protocol?
 

Thread Starter

Natsoumi

Joined Apr 2, 2009
9
Why don't you explain a few more things, like what microcontroller, what LCD display?
Is the RS232 cable a null modem or DTE/DCE cable?

Are you trying to communicate using the LCD's protocol, or via RS232 protocol?
The microcontroller im using is called Renesas M16C. My project entails reading a bitmap file from a USB flash memory stich and displaying it onto a monitor.

The thing is, i dont know much about monitors :confused:
I checked, and the make is a BENQ FP767 v2 with a 15pin D-sub connector. I dont know if this info is any help.

A big thank you to all the ppl who replied :)
 

SgtWookie

Joined Jul 17, 2007
22,210
I see.
You're trying to go directly from a uC to a computer video monitor that has only analog inputs.
A CNET review page for your monitor: http://reviews.cnet.com/lcd-monitors/benq-fp767-12/4505-3174_7-30638486.html

The easiest way for you to get data from your uC to the monitor is to use a PC between the two. Accept serial data via a COM or USB port using the Terminal program, and have the display connected to the PC's video card.

There ARE RS-232 to SVGA adapters out there, but they are not cheap.
Here is one such adapter:
http://archive.chipcenter.com/circuitcellar/january02/c0102npn7.htm?PRINT=true
I have not used that adapter or purchased from that vendor; the link was merely an example of what might be out there. Note that the article was from January 2002; it may not even be offered anymore.
 
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