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Messages - Saurabh_B

Pages: [1] 2 3 ... 24
1
TFTs / Re: Help with NHD-5.0-800480TF-ATXL#-CTP
« on: December 05, 2017, 04:40:12 PM »
This would depend on how you are planing on communicating with the display.

Most CTPs have have built in Controllers have multiple drivers available; at times these are even provided by the manufacturer.
If you are going to be using an external controller, this can be quite a bit different. The external controller (SSD1963, EVE, ect...) should have some stock drivers that can be found online.

2
Character LCDs / Re: NHD-C0220Biz-FS(RGB)-FBW-3VM initialization problem
« on: December 05, 2017, 08:15:02 AM »
Are you sending a delay between the commands or allowing the commands that were sent to execute?

3
Graphic LCDs / Re: Can't get NHD-12232KZ to work with STM32
« on: December 05, 2017, 08:13:24 AM »
Would it be possible to show a schematic of how you have the display connected?
Other than the shift register you also have certain control signals that need to be toggled to latch the data.

4
TFTs / Re: Help with NHD-5.0-800480TF-ATXL#-CTP
« on: December 05, 2017, 08:11:46 AM »
Hello,

The driver is not the same thing as a TFT controller.

While you will be writing to the driver to show anything on the display, it does not have a built in RAM and it doesn't refresh the screen either.
These would be handled by the controller.
Certain Microcontrollers do have a built in TFT controller which are able to handle TFTs without an issue. These would include PIC24s, TI Sitara and so on.

For smaller less powerful controllers you would need to use a controller such as the SSD1963 or the FT81X.
For this you would have the following:

Processor ---(SPI/ 16/8-Bit Parallel)--->Controller---24RGB--->Driver (OTA7001) --->Display

For a processor with a built in controller you would have:

Processor ---24RGB---> OTA7001 --->Display

5
Hello,

I have used this display and the pinouts do confuse a few people.
However i can confirm that when you are looking at the front of the display the pin on the far right is the Reset pin.

The schematic on EasyEDA might be looking at the display from the back, would it be possible to link that to me?

6
TFTs / Re: working with nhd-7.0-800480ef-asxv-t with buildroot framebuffer
« on: November 16, 2017, 08:15:38 AM »
Can you give us more information as to what issues you are having?

8
OLEDs / Re: NHD-2.8-25664UCB2 display - Linux device driver
« on: November 08, 2017, 08:03:56 AM »
Hello,

Unfortunately we do not have any Linux drivers for our monochrome displays.

However there are plenty of people who have made drivers for this and other displays online:
The first one I found was FBTFT: https://github.com/presslab-us/fbtft
Another would be the Luma: http://luma-oled.readthedocs.io/en/latest/intro.html

9
TFTs / Re: FT5336 problem with sensitivity and gesture
« on: November 01, 2017, 04:56:10 PM »
Sorry for the misunderstanding.

The firmware on the CTP is often programmed by the display manufacturer.
The different versions on the firmware could be perfectly normal, however you would have to check their application notes to see what might have changed.

More than likely the standard values of the registers will be different. You would need to adjust the threshold & sensitivity of the touch panel.

10
TFTs / Re: FT5336 problem with sensitivity and gesture
« on: November 01, 2017, 11:16:17 AM »
This might be a firmware related issue, i would recommend contacting FTDI for more support. they've worked with more manufacturers than we have and they might have a fix for it.

11
TFTs / Re: NHD-2.4-240320CF-CSXN#-F Brightness Adjustment
« on: November 01, 2017, 11:13:47 AM »
Hello,

For our LCDs you are directly connected to the LEDs, the power is not controlled by the ST7789s.

I would recommend using an external current limiting circuit into the anode for the display.

12
OLEDs / Re: OLED Update timing problem
« on: October 26, 2017, 04:05:03 PM »
I am still unsure how you are getting characters to show up when the display is powered on.
All of our OLED displays do not show any information until they have been given data to show.

Would it be possible to show me a picture of what characters you are seeing, also a video describing the problem.

I believe the DDRAM of the OLED display is being updated when the power is not appled.

One simple solution is to use the display OFF command after the display boots up from a reset / power off. After this i would recommend doing a clear display before using the display ON command.

13
OLEDs / Re: OLED Update timing problem
« on: October 25, 2017, 04:01:24 PM »
When you reset the MCU do you know if it sends any random information out of the port that's connected to the LCD?

14
OLEDs / Re: Characters Mirrored on NHD-0420CW Display
« on: October 25, 2017, 04:00:17 PM »
Unfortunately the pins are not available to the end user.

They do come out to the PCB on pins 5 & 6 of the ribbon connector that soldered onto the back of the display.

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