I'm under the assumption that these are HD44780-based displays, if this is wrong, please let me know and slap me.
I'm using a microcontroller for a little project of mine. I have a super-cheap HD44780 LCD that I have been using for prototyping, and it works fine, no backlight or anything, but that doesn't matter.
I decided to get a "real" LCD for the final project, and I went with the CFAH2002A-YMC-JP because they looked beautiful on the web page
I got it today and after hooking it up (w/o backlight) I turn it on and get nothing. So I disconnect everything and hook it all back up, still nothing, so I tear my circuit apart and put it back w/the old cheap LCD and it works fine.
So I try again, triple checking my wiring and can't find anything different. Still nothing...
What should I do? I don't have a parallel cable, nor do I have any desire to make one to hook it up to my computer to test this.
A couple assumptions, on the cheapo LCD I simply grounded the contrast line, this gave me a good contrast so I went with it. I did the same w/this screen, of course it didn't work, but I did also try it w/ a 10k pot. Also I'm assuming this will work w/o the backlight on? I later tried hooking LED+ to +5 and LED- to Gnd and still got nothing, no glow or anything...
I'm using a microcontroller for a little project of mine. I have a super-cheap HD44780 LCD that I have been using for prototyping, and it works fine, no backlight or anything, but that doesn't matter.
I decided to get a "real" LCD for the final project, and I went with the CFAH2002A-YMC-JP because they looked beautiful on the web page
So I try again, triple checking my wiring and can't find anything different. Still nothing...
What should I do? I don't have a parallel cable, nor do I have any desire to make one to hook it up to my computer to test this.
A couple assumptions, on the cheapo LCD I simply grounded the contrast line, this gave me a good contrast so I went with it. I did the same w/this screen, of course it didn't work, but I did also try it w/ a 10k pot. Also I'm assuming this will work w/o the backlight on? I later tried hooking LED+ to +5 and LED- to Gnd and still got nothing, no glow or anything...
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