Hi!
The display: https://www.adafruit.com/product/1770
The guide: https://learn.adafruit.com/adafruit-2-8 ... reakout-v2
I have tried to get the display working using the guide linked above. The display just light up and shows a white screen.
What i have tested:
- 8-BIT and SPI on both arduino MEGA and UNO
- Checked code to make sure the line for shield pin configuration was commented out
- checked wiring multiple times( will check again)
- Tried another computer
When running the example codes, it does not identify the lcd driver, but it's able to identify the resolution of the display. I have been through a lot of threads on forums with similar problems, but none of them was able to work for me.
Any suggestion on how fix this problem?
Thanks in advance!
2.8" TFT touch display white screen
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Please be positive and constructive with your questions and comments.
- adafruit_support_mike
- Posts: 67459
- Joined: Thu Feb 11, 2010 2:51 pm
Re: 2.8" TFT touch display white screen
Post a photo showing your hardware and connections and we'll take a look. 800x600 images usually work best.
- Bakevaren
- Posts: 5
- Joined: Sat May 01, 2021 7:38 am
Re: 2.8" TFT touch display white screen
Added a photo of the display board. Not sure if that was what you wanted, so let me know if you need more photos.
Thanks!
Thanks!
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- adafruit_support_mike
- Posts: 67459
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Re: 2.8" TFT touch display white screen
I need to see the signal connections between the display and the microcontroller.
- Bakevaren
- Posts: 5
- Joined: Sat May 01, 2021 7:38 am
Re: 2.8" TFT touch display white screen
Heres a picture for the digital pins.
For the analog pins it was hard to get it in a picture, but they are connected as listed below:
RD - A0
WR - A1
C/D - A2
CS - A3
For the analog pins it was hard to get it in a picture, but they are connected as listed below:
RD - A0
WR - A1
C/D - A2
CS - A3
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- adafruit_support_mike
- Posts: 67459
- Joined: Thu Feb 11, 2010 2:51 pm
Re: 2.8" TFT touch display white screen
When you run the test code, does it say an ILI9341 display is connected?
- Bakevaren
- Posts: 5
- Joined: Sat May 01, 2021 7:38 am
Re: 2.8" TFT touch display white screen
No. When running the code, the serial monitor tells me the lcd driver is unknown.
- adafruit_support_mike
- Posts: 67459
- Joined: Thu Feb 11, 2010 2:51 pm
Re: 2.8" TFT touch display white screen
Okay, that gives us a place to start. Double-check the wiring for the CS, C/D, RD, and RW signals. Those are most likely to be involved in a basic communication failure.
Check continuity from one board to the other with a multimeter. Sometimes you can get a jumper whose wire is broken inside the insulation.
Check continuity from one board to the other with a multimeter. Sometimes you can get a jumper whose wire is broken inside the insulation.
- Bakevaren
- Posts: 5
- Joined: Sat May 01, 2021 7:38 am
Re: 2.8" TFT touch display white screen
Hi, sorry for the late reply.
I tested the continuity of the wires and it all seems to be ok. Also checked the wiring, but it doesn't change anything.
Thanks again for help!
I tested the continuity of the wires and it all seems to be ok. Also checked the wiring, but it doesn't change anything.
Thanks again for help!
- adafruit_support_mike
- Posts: 67459
- Joined: Thu Feb 11, 2010 2:51 pm
Re: 2.8" TFT touch display white screen
Try removing and reseating the TFT's flex cable: pull the black clips at the ends of the fine-pitch connector toward the slot to release the cable. Pull the cable all the way out of the connector and put it back, making sure it's fully seated all the way across. Then press the clips at the ends of the cable back to lock the cable in place.
- gulliver22
- Posts: 3
- Joined: Sat May 22, 2021 2:00 pm
Re: 2.8" TFT touch display white screen
Im having the same problem, though my Arduino Mega 2560, so the display plugs directly onto my Arduino. When I run the grapicstest, i get this from the serial monitor:
ILI9341 Test!
Display Power Mode: 0x0
MADCTL Mode: 0x0
Pixel Format: 0x0
Image Format: 0x0
Self Diagnostic: 0x0
(then a bunch of benchmark times)
I am using the wall wart power supply.
TIA
ILI9341 Test!
Display Power Mode: 0x0
MADCTL Mode: 0x0
Pixel Format: 0x0
Image Format: 0x0
Self Diagnostic: 0x0
(then a bunch of benchmark times)
I am using the wall wart power supply.
TIA
Please be positive and constructive with your questions and comments.