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Messages - Paul_B

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OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« on: March 19, 2018, 07:45:52 AM »
Glad to hear you got your display up and running!

Graphic LCDs / Re: NHD-12864-WX serial mode
« 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  ;)

Hi Lightcalamer! Welcome to the Forum  ;)

Brilliant, thank you for sharing your code it will definitely help others.

Best Regards,

Paul B.

OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« on: March 06, 2018, 08:26:50 AM »
To verify please check the datasheet for the I2C devices on your PCB  ;)

On the NHD-0420CW-AY3 module there is an address-select line (Pin 4). For troubleshooting purposes you can try to tie the address-select line (Pin 4) HIGH 3.3V. Please note that you will probably have to cut a pin / trace since your schematic shows it tied to GND. Finally, be sure to update the displays I2C Slave address to 0x3D in your software.

Disclaimer: Modified product will void warranty.

OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« on: March 05, 2018, 10:30:25 AM »
Can you confirm that the I2C slaves do not have conflicting addresses?


OLEDs / Re: Issue about drawing on NHD-0420CW-AY320 in i2c
« on: March 05, 2018, 09:49:46 AM »
Hey Arrgon,

What value pull-up resistors do you have on the SCL and SDA lines?
Has the timing been verified on an oscilloscope?

OLEDs / Re: Issue about drawing on NHD-1.27-12896UGC3
« on: March 02, 2018, 02:18:48 PM »
Hi Balázs,

The NHD-1.27-12896UGC3 module is mounted in the correct orientation, which is always a good start  8)

At this time I'm not entirely sure what is causing the stretched / misaligned text. There obviously is an issue with the initialization sequence that needs to be pin pointed.

Are you available for a brief call today so I can help you troubleshoot?

Tel: +1 (847) 844 8795 - Ask to speak with Paul

Hi Newto,

I believe the WiFi/Bluetooth pins were taken from the 10/100 Ethernet pins (don't quote me on that)...

The BeagleBone Black Wireless is still fairly new to me, I'll have to do some additional testing to confirm  ;)

OLEDs / Re: Issue about drawing on NHD-1.27-12896UGC3
« on: February 22, 2018, 12:04:18 PM »
Thank you for the information, can you please let me know how the NHD-1.27-12896UGC3 module is mounted in the enclosure? Any chance that it is mounted upside down  :o

Sorry, I have to check for my own sanity...

OLEDs / Re: Issue about drawing on NHD-1.27-12896UGC3
« on: February 21, 2018, 10:53:16 AM »
Hi Balazs!

I believe this is related to the "Set Re-map / Color Depth" command, please see page 32 in the SSD1351 datasheet.

Code: [Select]

oled_Command_12896RGB(0xA0); //Set Re-map, color depth   <-----------------

Character LCDs / Re: CAD Files for Displays
« on: February 21, 2018, 09:59:58 AM »
Please contact for further information.

Evaluation Tools / Re: NHD-FT81x-SHIELD
« on: February 15, 2018, 04:53:02 PM »
Arduino UNO or MEGA

The NHD-FT81x-SHIELD is compatible with a wide range of Arduino and Arduino clones, however there are some which are not compatible. The NHD-FT81x-SHIELD requires 5V to be supplied from the Arduino itself, and some Arduino clones, specifically 3.3V versions such as the Arduino Pro 3.3V, feature 3.3V on the pin typically specified as being 5V.

Arduino 1.8.5 (latest release)



For additional information, more details can be found in the "Arduino Shield User Guide for NHD EVE2 TFT Modules" pdf:

Evaluation Tools / Re: NHD-7.0CTP-CAPE - BBB does not start up properly
« on: February 14, 2018, 03:27:08 PM »
Afternoon Hendrik,

I've completed testing on the NHD-7.0CTP-CAPE utilizing the new BeagleBone Black Wireless and managed to replicate the issue you are experiencing. The issue seems to stem from the OSD3358 power management chip exclusively on the new BeagleBone Black Wireless model.

If you are having this issue, please see the work-around below:

Disclaimer:Modified product will void warranty.

  • Cut pins 7 & 8 on connector P1_B
  • Solder a 0 Ohm resistor (or solder bridge) between pins 5 & 7

This enables the backlight circuit to run off VDD_5V (main power supply from the DC input jack) instead of SYS_5V (main rail for the regulators on the main board).

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