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1  Using Arduino / Displays / Re: Anyone have any code for the NHD-C0220AA-FSW Newhaven Display? on: January 16, 2013, 05:21:07 pm
Worked great, can't thank you enough! BTW, is anyone else having an issue with arduino1.0.3 being really slow to compile or other issues?

Thanks again! Love this forum!
2  Using Arduino / Displays / Re: Anyone have any code for the NHD-C0220AA-FSW Newhaven Display? on: January 16, 2013, 05:11:33 pm
Thank you very much! Much appreciated!
3  Using Arduino / Displays / Re: Anyone have any code for the NHD-C0220AA-FSW Newhaven Display? on: January 16, 2013, 11:30:00 am
Hi, thank you...here is the datasheet. This is my second time inquiring about these displays. The first one was using the NHD-C0220AZ which was a 5V display and would not work with a 3.3V Arduino Pro Mini. Now I have changed the display and have most of the code to get it going but I am having trouble moving the cursor(to the second line). It will be easy once I find which command it is. If you know anything about these commands please reply. Thank you for your help I will take a look at your link.

http://www.newhavendisplay.com/specs/NHD-C0220AA-FSW-FTW.pdf
4  Using Arduino / Displays / Anyone have any code for the NHD-C0220AA-FSW Newhaven Display? on: January 15, 2013, 06:20:59 pm
I am not using the Liquid Crystal h file or any code in the Arduino sketchbook. I need the cursor on my display to go to the next line.  smiley-confuse smiley-confuse smiley-confuse
5  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 14, 2012, 01:26:40 pm
Hello! I am writing a follow up on this project. I did after all hook up my UNO and voila! the LCD display works! So it is indeed a big factor that it MUST be a 5V controller for this Display.

Quote
But from your earlier photo, you do have an UNO.
So while the UNO can't be used in the final project/product it could be used to verify if the LCD is working or not.
It would only take a few minutes to hook up the uno to the LCD and run the
"hellworld" LiquidCrystal library example sketch.
This would verify that the LCD is working.

I know this sounds strange but if I got caught using anything other than what I was given I would have gotten in trouble (alot of trouble).... I did this one the sly.

I did some research and found the NHD-C0220AA-FSW-FTW which is 3.3V and bought it. I hooked that one up to my original circuit (using the Pro-Mini) and voila again! It works like a charm on the 3.3V pro-mini.

Now, I have the display initialized (yay) and I am indeed writing an 'N' (see my code on page 1). I now have to write some more code and/or experiment with the code that is in the LiquidCrystal library.

Thank you all so much for all your help on this! I love this forum!

Cheers!   
6  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 11, 2012, 01:44:21 pm
Well it looks like I am at a block. I have not been able to get this display to give me any feedback whatsoever. I have put a 5V supply to it and a 10k pot (also switched the pot out for resistors) and cannot get blocks of anything. I have played with the voltage, played with the resistance, I have tried a few different displays, I have measured the current and resistance, I have spoken to Newhaven engineers and it is supposed to work ????????? Maybe it really does need to be initialized and newhaven doesn't know because they have never tried? They assured me it should work. 

Quote
It would be nice to know all of his constraints at once rather than getting them piecemeal.  We know that for some reason he has to use an Arduino pro mini but we don't know which one he has.  We also don't know if he is limited to running at 3.3V for some other reason.  According to the Arduino website (http://arduino.cc/en/Main/ArduinoBoardProMini) there are two versions: "There are two version of the Pro Mini. One runs at 3.3V and 8 MHz, the other at 5V and 16 MHz." and this may be a concern for him.

I think you are talking about me, so I will elaborate. I am using the 3.3V 8MHz Pro-Mini and I have to run 3.3V because I am told to do so. There is no way around that. I will be using this Arduino and three of these LCD's to display voltages (from another source) on a power supply (front panel). I have no control over what I was given and so I am trying to make it all work. The reason I posted this message in the beginning was to see if anyone else has ever used this combination and if so could help me on my merry way, but it seems no one has used this combination before.

Thank you all for all of your help and all the brainstorming, I really do appreciate this forum!
7  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 10, 2012, 04:41:08 pm
Hi bill (bperrybap)

Thanks for your response, I will definitely take a look at the example! I really hope that I could use it!!! My project is only in the beginning/preliminary stage but in the end I will have 3 of these Displays on the front of a power supply. I have to use this LCD and have to use the 3.3V Pro-mini; there is no room for change here. I have the initialization code (first page) that I wrote by following the datasheets and I do indeed get the correct output (according to my analyzer) I just cant get the LCD to work. I am still playing around with it and will post what I find.

Thank you very much!
8  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 10, 2012, 12:34:36 pm
Thank you all for your responses, it is greatly appreciated! I will have to go through and follow recommendations, I will post follow ups on my results. I do have to start at the beginning now because I removed the LCD altogether and just put it to a 3.3V then 5V supply and trim the pot up and down, down to zero and could not get anything out of it.

floresta, Thank you very much for the link and for the correction on the datasheet! How did you figure that out? Very bad for beginners  smiley-confuse
I was trying to give an example of how I was doing the initialization and just used 'Function Set' as an example, I wasn't questioning it. Also, I cannot use an UNO I have to have everything hooked up to the Pro-Mini. Its not me, I am just following the protocol. 


Thanks Again!

PS I went through the initialization process again and the output from the analyzer and myself and a co-worker are certain that it the correct sequence.

9  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 06:25:38 pm
dhenry, thank you very much for our response. Can you please explain
Quote
The display looks to be hd44780 compliant so the regular code should work.
How do I find out it is hd44780 compliant? What is the regular code, where? I am fairly new to this and the only thing that I know it is that Newhaven has an initialization set up that is written for an 8051 (does not work with Arduino). Do you mean regular initialization code for Arduino or the NT7605 controller? Thanks so much for your help!
10  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 06:13:52 pm
OK, I will change it. I had delays like that so I could initially see what was happening. I will take a look at the examples but I am sure that I searched extensively for something on this particular LCD and found nothing. Thank you again, keep posting please if you hear anything. Cheers
11  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 05:04:56 pm
Also, If you have any sample code, could you please post? I really appreciate it. Thank you!
12  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 05:03:42 pm
Ugh.  smiley-confuse Well, I have just finished doing most of that. I am not using the UNO, I can't. I am using the Pro-Mini but nonetheless, I have done that. I even took a separate 5V supply and attached it to the LCD (pins 3, 2, 1) with the pot on a separate breadboard and played with voltage down to zero and gotten nothing. I am at wits end. I will keep trying. If I come to any conclusions I will post again. Thank you very much for your help....If anyone out there knows anyone out there that has used this Display with an Arduino, Please please post. Cheers

13  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 04:44:27 pm
Logic Analyzer output 0 = E, 1= RW, 2 = RS....The data lines are 7 (to DB7), 6 (to DB6), 5 (to DB5), 4 (to DB4).

 
14  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 04:40:07 pm
Another photo
15  Using Arduino / Displays / Re: Newhaven NHD-C0220AZ-FSW-FTW on: December 07, 2012, 04:38:21 pm
Ok, here are the attached photos.

I had gotten a recommendation to ground the other lines. It didn't change anything either way.

Thank you!!
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