0

1.8" Color TFT LCD display with MicroSD Card Breakout: Stop
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

1.8" Color TFT LCD display with MicroSD Card Breakout: Stop

by FVA1 on Tue Feb 19, 2019 12:52 pm

I bought 2 of the 1.8" Color TFT LCD display with MicroSD Card Breakout - ST7735R LCD's but the one is not OK. After some time maybe 1 hour the graphic images on it gets messed up, but the text stays OK for a short while until just a white screen is present. If I leave it for a couple of hours it will again work but will fail again. I just unplug the faulty one and then fit the other unit I have and all stays OK. Bought them on the 9 Feb 2019

Thanks
Attachments
20190219_185205-1.jpg
20190219_185205-1.jpg (184.72 KiB) Viewed 140 times

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by adafruit_support_carter on Tue Feb 19, 2019 2:56 pm

Can you recreate the issue using the graphicstest demo from the library?
https://github.com/adafruit/Adafruit-ST ... cstest.ino

adafruit_support_carter
 
Posts: 11091
Joined: Tue Nov 29, 2016 2:45 pm

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Tue Feb 19, 2019 3:25 pm

I uploaded your sketch but just white screen. On the working unit I have your test is working. Will leave the unit off for a couple of hours and then test again, as it recover after some time if its not hooked up.

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Wed Feb 20, 2019 7:47 am

Left it overnight. after Power ON, it worked and the Media buttons where changing for about 15min. Then just froze, did a reset and after that only white screen.

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by adafruit_support_carter on Wed Feb 20, 2019 1:42 pm

OK, so it does it also with the demo sketch. Thanks for testing that. Can you post a photo of the backside of the problematic display. It can be disconnected from the wiring, just want to check for anything obvious on the board.

adafruit_support_carter
 
Posts: 11091
Joined: Tue Nov 29, 2016 2:45 pm

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Wed Feb 20, 2019 2:11 pm

Sorry picture not that good. Can take a better one tomorrow during daytime.
Attachments
20190220_205804[1].jpg
20190220_205804[1].jpg (213.89 KiB) Viewed 95 times

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Wed Feb 20, 2019 2:36 pm

Hi, I noticed that when observing the Serial data that when the Display stop working it prints (File not found). After a reset (Initializing SD card...failed) that's when loading images from SD card. With your test shows (done) but screen stays white.

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by adafruit_support_carter on Wed Feb 20, 2019 3:56 pm

Thanks for the photo. That all looks OK.

For the test I linked, it will print "Done" and then go into an infinite loop that just inverts the display over and over:
https://github.com/adafruit/Adafruit-ST ... t.ino#L140

It sounds like you display did that? But only for 15 minutes?
it worked and the Media buttons where changing for about 15min. Then just froze

adafruit_support_carter
 
Posts: 11091
Joined: Tue Nov 29, 2016 2:45 pm

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Thu Feb 21, 2019 9:28 am

Yes, infinite loop for about 15 min then stopped.

If I then cut the power to it for couple of hours, it will again worked but just for a while. The other LCD function without a problem at all.

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by adafruit_support_carter on Thu Feb 21, 2019 12:56 pm

Sounds like some weird thermal issue. Something very marginal is becoming unhappy once it warms up. Then is OK again once it cools down.

Just to be clear - in your swap out testing with the other display, the only change is the display itself. Everything else is the same? Same cables, connections to main board, etc?

adafruit_support_carter
 
Posts: 11091
Joined: Tue Nov 29, 2016 2:45 pm

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Thu Feb 21, 2019 1:11 pm

Yes, everything is the same, I just unplug it and plug the other unit in. I re-soldered the 10way pins on it, but stays the same.

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by adafruit_support_carter on Thu Feb 21, 2019 1:20 pm

OK, let's replace it. Send an email to support@adafruit.com with a link to this thread and your order number and they can send you a new display.

adafruit_support_carter
 
Posts: 11091
Joined: Tue Nov 29, 2016 2:45 pm

Re: 1.8" Color TFT LCD display with MicroSD Card Breakout: S

by FVA1 on Thu Feb 21, 2019 1:57 pm

Thanks

FVA1
 
Posts: 10
Joined: Sat Aug 20, 2016 4:26 am

Please be positive and constructive with your questions and comments.