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Messages - Saurabh_B

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Character LCDs / Re: Reversed backlight connections
« on: September 21, 2016, 08:39:25 AM »
Many of our displays have solder bridges or jumpers that can be moved to reverse the polarity of the backlight or even provide the power for the backlight via the VDD and VSS pins.

Do you have a certain display you are looking at to match the display from the Elise cluster?
Beautiful car btw.  8)

Character LCDs / Re: 2x NHD-0420D3Z I2C Problem
« on: September 21, 2016, 08:35:50 AM »

You could power it through a 5V so long as the supply can provide enough current to run the backlight as well. Most MPUs would allow for this.
The display does have internal pull up resistors, so you will not need to worry about providing those externally.

OLEDs / Re: NHD-2.7-12864UC & Dev board
« on: September 19, 2016, 10:07:11 PM »

I will make a few wiring diagrams tomorrow.
If you want to order the cables I will tell you which ones will work as well.

Thats good to hear, luckily the last 2 pins are no connects, so you shouldn't have anything short out on the board.

Do not apply 19V to the board.

What is the current allowance for the VDD pin you are applying?

Did you try to power this display on with 19.2V at all?

The backlight enable pin is not directly connected to pin 2 of the TFT. The Controller itself has a built in voltage booster, which is tied to VDD.

The backlight enable pin can be tied to a GPIO or be left floating for the backlight to power on.


The backlight enable pin is an external signal that allows you to turn the backlight on or off.
It is normally tied high and will allow the backlight to remain running once VDD and VSS have been applied to the controller.

I did just confirm that this controller board will power the backlight, however it is normally black. Once power is applied to the backlight and the internal drivers of the display; the screen will flash for a fration of a second and go black.

This could also have to do with the display either being in Sync or DE mode, or the polarity of the clock.

We have seen the display shift when a the settings above have been changed, can you confirm whether you are using sync or de mode.
Also if you are on the rising or falling edge of the pixel clock?

TFTs / Re: NHD-2.4-240320CF-CTXI#-FT in 16 bit mode
« on: August 19, 2016, 08:15:01 AM »
Would it be possible to see your schematic for 16-Bit mode,
Also would it be possible to see the command / data write functions from your code?

TFTs / Re: NHD-3.5-320240MF-ATXL with full controller?
« on: August 12, 2016, 04:48:25 PM »
Hello Mark,

Unfortunately we do not have a controller board with an onboard GRAM that coudl be updated serially.
I would recommend looking at a controller chip such as the FTDI Eve:

TFTs / Re: NV3035C Dot Clock Lower Timing 6.1MHz
« on: August 09, 2016, 10:40:27 AM »
Writing to the display slower won't necessarily cause problems, however filling the entire display will take longer.
This can also lead to some flickering of pixels which tend to fall first.

Character LCDs / Re: 2x NHD-0420D3Z I2C Problem
« on: July 19, 2016, 10:24:07 AM »
Can you also try this without the pull up resistors?

Evaluation Tools / Re: NHDev updated support list?
« on: July 18, 2016, 08:48:27 AM »
Unfortunately we do not have an updated list for compatible displays, however I can confirm both of these displays will work with the NHDev Development Board.

TFTs / Re: Resistive/Capacitive Touch Screen - Sample Code
« on: July 14, 2016, 07:57:46 AM »
Hi, please email for the CTP Code.

Unfortunately it is not that simple to write code for the RTP. I would recommend using an external RTP controller such as the Microchip AR1100:

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