Recent Posts

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TFTs / Arduino shield and micro SD card
« Last post by zenny6377 on March 21, 2018, 11:32:12 AM »
Hi - I'm just starting out with the NHD-FT81x-SHIELD on an arduino and the NHD-3.5R-FT812 display, I wanted to load a background graphic from the micro-SD card to superimpose my buttons on (or just draw a single image including the controls I want to click on)  There are no examples I can find of doing this, can anyone help?
TFTs / Touch shifting on NHD-7.0-HDMI-N-RSXV-RTU
« Last post by sherlock on March 21, 2018, 05:16:00 AM »

I have sent an e-mail to, but did get any response.
So I ask my question here. Hope anyone can solve my problem.

I'm using NHD-7.0-HDMI-N-RSXV-RTU on my Win 10 PC. And connected with HDMI and USB.
But my touch panel has shift at the edge.

For an example:
  assume that left-top is origin (0,0) , total 800x480 pixels.
  when I touch (20, 20), the edge of panel, it responses at (50, 30) (obvious shift)
  but when I touch (400, 240), the center of panel, it responses at correct position (400,240)

Is that working properly? Why? Should I replace a new panel?

Very thanks
OLEDs / Re: Issue about drawing on NHD-1.27-12896UGC3
« Last post by balazs on March 19, 2018, 04:00:35 PM »
Hi Paul,

Since we have talked about the possible solutions, I tried them all of them. I have failed to resolve the issue, so I am using the display with this symptom.

I mean I am drawing the characters from left to right and from bottom to top and I have transformed my character arrays to be compatible with this way. Everything is okay with this method however I am curious why it is not working the same way as the display you have tried.

Thank you again for your help!

The display is great and shows nice characters.


OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« Last post by Paul_B on March 19, 2018, 07:45:52 AM »
Glad to hear you got your display up and running!
OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« Last post by arrgon on March 19, 2018, 06:10:11 AM »
Thanks for your help.
It's finally working, I just changed the slave adress 0x3C by 0x78 and it works, Im so happy :) !

TFTs / EVE2 TFT Module VHDL Code Support (NHD-3.5-320240FT-CSXN-CTP)
« Last post by bivin on March 19, 2018, 12:06:34 AM »
I'm using NHD-3.5-320240FT-CSXN-CTP. But the device manual is not clear on how to program the module through SPI/QSPI interface using FPGA. Kindly explain how to initialize the module from FPGA. Sent "CLKEXT" , "ACTIVE" etc are bit unclear. Kindly share additional documents for the same. :-[
OLEDs / Re: NHD-0420CW-Ax3 I2C VDD level
« Last post by Ted_M on March 15, 2018, 09:35:05 AM »
Please refer to this post for clarification on the issue of using I2C mode at 5v:,3953.msg6560.html#msg6560
OLEDs / NHD-0420CW-Ax3 I2C VDD level
« Last post by tumbleweed on March 14, 2018, 05:59:04 PM »
Can the NHD-0420CW-Ax3 work with VDD=5V in I2C mode?

In the datasheet I2C interface section it states:
Supply Voltage for OLED and Logic
VDD = 2.8V for 2.8V operation ONLY, 5V mode not supported

Looking at the datasheet for the US2066 controller I don't see any such limit:
Section 10.5 I2C characteristics Ta=25degC, VDDIO = 2.4-3.6 / 4.5-5.5V, VSS =0V

The display datasheet seems pretty clear that it can't, but I was wondering what the limitation is.
Vacuum Fluorescent Displays / Re: M0216SD-162SDAR2-1 Jumper Settings
« Last post by kpengwin on March 12, 2018, 03:46:58 PM »
I recently got one of these M0216SD-162SDAR2-1 and am having a problem with the same symptoms as Mike_B back in 2016 - the display does not seem to turn on at all. I'm trying to use the display by bit-banging serial with an arduino.

I've bridged J3 and J5 and left the other jumpers alone.

I'm using pins as follows:
Pin 1: Gnd
Pin 2: +5V
Pin 3: Serial I/O
Pin 4: Strobe
Pin 5: not connected
Pin 6: Clock

I set the pins as output, and then send the following bytes (same as Mike_B was sending above)

my send_byte function is:

// transmit byte serially, MSB first
void send_byte(unsigned char data)
   output_low(PORTD, 3); //begin write cycle
   int i;

   // send bits 7..0
   for (i = 0; i < 8; i++)
       // consider leftmost bit
       // set line high if bit is 1, low if bit is 0

       if (data & 0x80)
           output_high(PORTD, 2);
           output_low(PORTD, 2);

       // pulse clock to indicate that bit value should be read
       output_low(PORTD, 4);
       output_high(PORTD, 4);
       // shift byte left so next bit will be leftmost
       data <<= 1;
   output_high(PORTD, 3); //end write cycle
   output_low(PORTD, 2); //end write cycle
   output_high(PORTD, 4); //end write cycle

Anyone have any thoughts on what i might be doing wrong?
Graphic LCDs / Re: NHD-12864-WX serial mode
« Last post by Paul_B on March 12, 2018, 09:44:04 AM »
Hey j.campanelli,

I’m sorry to hear about the trouble you are having with the NHD-12864WX-T1TFH# display.

It would be helpful to verify your wiring / pinout. Feel free to post it below  ;)
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