problem with 1.8" TFT LCD display

EL Wire/Tape/Panels, LEDs, pixels and strips, LCDs and TFTs, etc products from Adafruit

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mpolex
 
Posts: 1
Joined: Tue Jul 08, 2014 5:45 am

problem with 1.8" TFT LCD display

Post by mpolex »

Hi,
I create a program with arduino to monitor home current consumption and plot it on TFT display.
The TFT is controlled by arduino SPI.
When I plug power, 99% cases I have total white screen, and 1% cases the TFT works fine. So I have to switch on off the plug 100 times until the display works.

I tried to connect TFT reset pin together with arduino one, or I tried to keep it always to Vdd, or I tried to connect TFT reset to a dedicated arduino digital pin. No changes

Is it the case to try to control the display without SPI?
did this problem already happen?

Thanks,
Marco
Attachments
TFT example with working and not working cases
TFT example with working and not working cases
TFT.JPG (116.5 KiB) Viewed 257 times

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adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: problem with 1.8" TFT LCD display

Post by adafruit_support_rick »

I don't think this is a problem with the reset line. I think you have a loose connection.
Check your soldering and your connections.

Also, try loading one of the example sketches which come with the Adafruit_ST7735 library. It may be that there's some conflict between the TFT and another part of your code.

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