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Messages - Saurabh_B

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OLEDs / Re: Problem with NHD 0420CW AY3 Display
« on: October 28, 2015, 11:53:22 AM »
Any chance you would be able to upload your initialization sequence?

OLEDs / Re: Problem with NHD 0420CW AY3 Display
« on: October 27, 2015, 03:16:23 PM »
The pullup resistors will depend on the MPU you are using. If it does already have pull up resistors built in (Like the arduino Mega) you wouldn't need any. But we prefer using 10k resistors if they aren't on the input lines. 

Can you tell me what slave address you are using, and if you are enabling the internal voltage regulator for 5V.

The pins that are no connects should be tied to ground.

Character LCDs / Re: NHD-0420H1Z-FL-GBW-33V3 - 2 Lines Mode Problem
« on: October 27, 2015, 03:12:30 PM »
The initialization seems to be fine.

The only thing i can imagine is that the when you are sending the 0x38 command to set 2 line mode it changing it from 1line mode, which could possibly blank out the screen.

If you would be able to email me at I can give you the code i wrote to test these displays. It is made for an arduino and it will work for all of our character displays that use the ST7066U controller.

Character LCDs / Re: NHD-0420H1Z-FL-GBW-33V3 - 2 Lines Mode Problem
« on: October 26, 2015, 10:31:31 AM »

Any chance you would be able to post your initialization sequence, along with how you are changing the line you are writing to?

The display moves onto line 3 because of the addressing, you can find the address table for the display on page 5 of the display specification here:

Here are links to example codes we have available on our website for this controller:

I also have another code for this display in 4bit mode using an arduino if you would be interested in that please email

Character LCDs / Re: Setting SPI mode for NHD-0429D3Z-NSW-BBW
« on: October 23, 2015, 08:19:23 AM »
Yes, that is where you would want to place a jumper. The board has recently been changed and I wasn't sure if you had the older or newer design.

OLEDs / Re: NHD-0220CW-AB3 "doubling" data?
« on: October 22, 2015, 12:07:51 PM »

I was wondering if you could share your wiring diagram, along with the initialization sequence you are using.

The initialization sequence for this display will be significantly different compared to the standard character OLED displays.

Character LCDs / Re: Setting SPI mode for NHD-0429D3Z-NSW-BBW
« on: October 22, 2015, 11:54:24 AM »

I you'll want to solder the jumper I marked in the following picture.

[attachment deleted by admin]

Graphic LCDs / Re: NHD‐240128WG-ATMI‐VZ#
« on: October 19, 2015, 02:59:07 PM »
Hi Rob,

There isn't a memory associated with these displays. You would tell the controller to display the pixel data onto the display. To write complete screen size images you would either have to convert the given image into hex by using a program such as LCD Assistant, or set up your MPU to read a given image and convert it into display data.

Graphic LCDs / Re: C128128BZ-FSW-GBW and SPI 3-wire
« on: October 15, 2015, 04:40:37 PM »

According to the controller datasheet:
In 3-Line mode, default message from MCU is command, the 2 bytes command of Set Data Direction & Display Data
Length must be set before display data send from MCU, after the display data is sent over, the next message is turned to
be command

I was wondering if you sent these 2 commands in the beginning?

If at all possible would you be able to share your schematic for how the display is setup along with your initialization to ensure you enable the internal regulator to generate the voltage required for the contrast.

You can see the controller datasheet here:
Pages 22 and 23 go into more detail about how the 3/4 wire SPI will work for this device.

OLEDs / Re: First time for OLED, HELP NEEDED!
« on: October 12, 2015, 08:07:25 AM »
Hi Lin,

The OLED you bought is a graphic display, there wouldn't be a cursor blinking. Before you are able to write to the display, you need to first initialize the display and then provide the pixel data.

You can use this example code to help you get started with programming the display and having it display data: Example Code

I am curious if you were interested in a Character OLED vs. the Graphic because you mentioned the blinking cursor. If this is the case I would recommend taking a look at either the standard Character OLED display or the Slim OLED displays.
Character OLED
Slim Character OLED

TFTs / Re: [TFT][NHD-2.4-240320CF-CTXI-F][MSP] Interface
« on: October 05, 2015, 11:20:27 AM »
This is what you will see when the display is initialized.

Have you tried writing to it?

TFTs / Re: NHD-4.3-480800EF-CTXP#-T EOL, replacement
« on: October 05, 2015, 08:29:58 AM »
Hi Bruce,

Unfortunately we do not have a replacement for that display that would match those specifications. We have a standard 4.3" display that has a resolution of 480x272.

It doesn't come with a built-in controller, you could get the controller board to go along with it or use a MPU with a built-in TFT controller.

On a side note, there are newer high brightness models available to help with readability in areas with a lot of ambient light.

Graphic LCDs / Re: NHD-C160100DiZ-FSW-FBW 3D model and assembly
« on: October 02, 2015, 08:36:39 AM »

To get the 3D model for this display please email a request to

There are multiple ways to mount it onto your case, You could create an enclosure with an opening for the display to house it, or even use some double sided tape to fix it into place.

To connect it to your mpu you would need the Molex 52892-1433 connecter mounted onto a pcb such as the NHD-COG14-36.

TFTs / Re: NHD-2.4-240320CF-CTXI#-FT ribbon cable question
« on: October 02, 2015, 08:29:03 AM »
The length of the cable is fixed for the standard display.

However it is possible to customize the display to include a longer cable, this would require a NRE cost along with a MOQ.

If you are interested in this please email:

Graphic LCDs / Re: NHD-C12864WC-FSW-FBW-3V3 booster
« on: September 25, 2015, 09:35:08 AM »
I was wondering if you could confirm the number of capacitors you have in the circuit along with the values you are using for the following commands:

Power Control Set
Electronic Volume
Booster Ratio Set
Voltage Regulator internal ratio Set

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