flip Posted October 21, 2009 Report Share Posted October 21, 2009 Hey! I want to buy an LCD display for the MB-6582. I was wondering if there are big quality differences between different LCD displays. If yes, what separates high quality LCDs from low quality LCDs? I'm also asking this, because I found very cheap LCD displays on ebay, and wanted to know if they are really OK to use, or if I should get something better. I'm already spending so much money on building this thing, if it really makes a difference I wouldn't mind paying the few bucks more for the LCD display. Here is the item I was looking at: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=170394118460 What do you think? Quote Link to comment Share on other sites More sharing options...
Wilba Posted October 22, 2009 Report Share Posted October 22, 2009 There are quality differences, more to do with the LCD type than manufacturers etc. i.e. "FSTN" is better than "STN", and LED array backlight is brighter overall than edge lit. If you like white on black (or perhaps green on black) then consider the Optrex STEP LCDs... these have the best contrast and are quite bright... Also I believe they do not draw as much current as your typical yellow-green LED backlight LCD. http://www.optrex.com/products/partdetail.asp?PartNumber=C-51847NFQJ-LW-AAN http://www.optrex.com/products/partdetail.asp?PartNumber=C-51847NFQJ-LG-ACN But they're relatively expensive compared to what you can find on eBay etc. I also like the red on black Orient LCD: http://character-lcd-lcds.shopeio.com/inventory/details.asp?id=1287&cat=Lcds&sub=Character%20Lcd Quote Link to comment Share on other sites More sharing options...
flip Posted October 22, 2009 Author Report Share Posted October 22, 2009 Thanks Wilba! I think I'll get the Optrex C-51847NFQJ-LW-AAN then. When I order it from mouser and don't have to pay shipping, its just about 7 EUR more than the one from ebay including shipping. Maybe there are some more people who want to order one too, then it wouldn't be more expensive at all. Quote Link to comment Share on other sites More sharing options...
Wilba Posted October 22, 2009 Report Share Posted October 22, 2009 If you use these displays, you will probably need to use less current than a normal LED array backlight LCD.... I recommend replacing the R4 resistor with 80K, thus limiting the current to around 25mA. Ideally, insert an 80K in series with R4's 1K, so you can short out the 80K later if you want to switch LCDs. Quote Link to comment Share on other sites More sharing options...
flip Posted October 22, 2009 Author Report Share Posted October 22, 2009 Thanks for the advice Wilba! I wouldn't have noticed. As I do not plan to switch the LCD, I'll just use an 80K resistor for R4. Quote Link to comment Share on other sites More sharing options...
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