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Messages - Saurabh_B

Pages: 1 ... 9 10 [11] 12 13 ... 24
151
TFTs / Re: How to print characters in TFT 5.0 with SSD1963
« on: July 13, 2016, 08:07:34 AM »
Hi,

You would need to either create a font table for yourself or download a library that has these tables built in.

Take a look at a few of the libraries below:
- http://www.microchip.com/forums/download.axd?file=0;757320
- https://github.com/fbrausse/ssd1963
- http://wiki.mcselec.com/bavr/SSD1963_fast_display_library_-_800x480

152
TFTs / Re: Problem with Display NHD-3.5-320240MF-ATXL#-T-1
« on: July 12, 2016, 03:47:49 PM »
Gregory,

The error you are getting seems to be either because you are declaring static variables inside of the function or the variables you are declaring might have been declared elsewhere in your code.
Would it be possible to remove the static modifier, or check to see if the same variables are declared globally elsewhere?


I tried to reply to the message you left on our site earlier, however the email address you provided did not work.

153
Graphic LCDs / Re: -40 to 85 C temperature range
« on: July 12, 2016, 08:15:57 AM »
Christos,

Could you please email nhtech@newhavendisplay.com for a quote.

154
Character LCDs / Re: 2x NHD-0420D3Z I2C Problem
« on: July 11, 2016, 01:24:36 PM »
How are the displays powered?

Is there a separate 5V input for the VDD on either display. Also are you using any pull up resistors?

155
Character LCDs / Re: Device found on Digikey, but not here
« on: July 11, 2016, 08:26:18 AM »
No, it is not.

The controller used in that display is no longer available. The electrical characteristics of that display would be similar to the display being sold on our website now.

156
Glad to see you have it working properly.  8)

157
TFTs / Re: Problem with Display NHD-3.5-320240MF-ATXL#-T-1
« on: July 08, 2016, 02:48:07 PM »
This sounds like something must have happened to either the code or the processor.

Were there any changes between now and the last time the display worked.

159
Character LCDs / Re: Device found on Digikey, but not here
« on: July 08, 2016, 02:27:36 PM »
That datasheet is from 2007, we haven't stocked that display for a very long time.
Newer glass and components would require 5V to function normally.

The controller for this display would now be the http://www.newhavendisplay.com/app_notes/ST7066U.pdf which would require 0.7*VDD for a logic High. ~3.5V.


160
Would it be possible to share the portion of the code where you are sending the characters?

At many times random characters may appear when there is a timing issue. How fast are you writing to the display, and are you allowing a delay after every command?

161
TFTs / Re: Sample code and eschematic
« on: July 08, 2016, 12:06:26 PM »
HI,

You would need to connect the display to the controller board, then from there the controller board would need to be tied to your processor.

The connections would depend on the ports and pins on the display itself.

To show an image on the display you could use the code here as a starting reference:
Arduino Code: http://www.newhavendisplay.com/app_notes/Arduino_nhd-4_3-480272EF.txt
Code Snip: http://www.newhavendisplay.com/app_notes/TFT_43M.txt

162
Character LCDs / Re: Device found on Digikey, but not here
« on: July 08, 2016, 12:04:37 PM »
HI Mike,

The NHD-0440AZ-FL-GBW is not a regularly stocked part, we would be able to make it however the display would have a 100pc MOQ.

Neither of these displays are compatible with 3.3V. We can also modify a display to make it compatible with 3.3V however it would be a custom part.

163
Graphic LCDs / Re: -40 to 85 C temperature range
« on: July 05, 2016, 03:49:12 PM »
HI,

Our standard displays are rated to handle -20 C up to +70 C, this range satisfies the requirements for most of our users, however it is possible to create a custom module that would be able to operate up to +85 C.

It is hard to say what would happen to the display when it is brought up to a temperature that exceeds +70. This has a chance of having dead pixels or dead portions of the display. Another possible issue is a damaged polarizer. However we are able to customize displays that would be able to safely be operated up to +85C.
 
The cold could also affect the display, at colder temperatures the liquid crystals themselves could start to freeze and expand. This could cause cracks and leaks of the LC inside the display. One recommendation is to use a heating element with your display to avoid damage caused by cold weather.

If the display is brought to an extreme condition momentarily it might still be able to function properly, but it is not recommended.

164
I have a few questions to see if we can narrow down where the problem lies.

When you start writing to the display, do you get an acknowledgement back?

Could you also measure the voltage on Pin 6 (Vout)?

165
Hi,

You can use our 7" TFT displays with the SSD1963 Controller board.
The controller board uses 8080 Parallel Interface to communicate to the MPU.

The capacitive touch panel however will still have an IC interface.

8-Bit Parallel Interface Controller
16-Bit Parallel Interface Controller

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