Ram,
The job is complex. Here are just a few things to consider. There are dozens more.
1. What do you want to do with the LCD?
2. How are you going to analyze and digitize what you get?
3. How are you going to present the data and control it?
4. If you are using existing circuitry, you must analyze each piece of data you want to display and make it compatible with the LCD.
5. If you are integrating this into an old design, you must dedicate a processor to just gather the data, change it to useful information and send it to the LCD.
6. If you are using a new design, you must integrate a processor that may have to be dedicated to the control of the LCD.
Like I said earlier, it CAN be done but at a cost of hundreds, perhaps thousands of man hours. It is not a trivial task. I would never ask any of your list of geniuses to do it. I doubt they have the time. I know I don't have the time to do it just so you can have an LCD.
Why not use one of these? Then you can simply replace your meter with this and have an LCD.
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http://cgi.ebay.com.au/Blue-LCD-Digital-Voltage-Volt-Meter-Voltmeter-Panel-20V-/370452794965?pt=AU_B_I_Electrical_Test_Equipment&hash=item5640b50e55
No design required. Just stick it in and find a place with a varying voltage to send to the two wires. Easy.
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http://www.thunting.com/smf/index.php/topic,19193.msg125892.html#msg125892
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« Last Edit: November 14, 2010, 02:50:55 am by GoldDigger1950 »
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