example projects of EVE2-TFT-Modules/5.0in/_800x480/Capacitive/ just producing white screen

Daniel Marano

Hello,

I am brand new to Newhaven's products. I just received the NHD-FT81x-SHIELD and NHD-5.0-800480FT-CTXL-CTP, connected them to my Arduino Uno and tried to run the sample code from github: https://github.com/NewhavenDisplay/EVE2-TFT-Modules/tree/master/5.0in/_800x480/Capacitive

But when I upload any of these projects it results in a blank white screen on the HMI. Is there any simple step I might be missing or recommendations to troubleshoot this problem?

Thanks!

Daniel

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Comments

6 comments

Date Votes
  • Cody J.
    NHD Staff

    Hello Daniel,

    Thank you for your interest in Newhaven Displays!

    Can you provide one or multiple photos of your overall setup? (Arduino Uno + NHD-FT81x-SHIELD + NHD-5.0-800480FT-CTXL-CTP)

    It is possible the display is not receiving ample power to fully boot up. Are you powering the Arduino Uno via USB or an external power supply?

    If you have any questions, don't hesitate to ask.

    Best Regards,

    Cody J.

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  • Daniel Marano

    Hi Cody,

    Thanks for the help!
    I am powering it through USB, here is my set up:

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  • Daniel Marano

    That last photo was with it powered off. When powered on the screen is steady white.
    I just tried adding external power supply on the 5v pins on the Arduino and the screen is now steady black (with a kind of dark blue tint). It looks like the external power supply might have fixed something!

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  • Cody J.
    NHD Staff

    Daniel,

    Thank you for providing the photo.

    You mentioned adding external power to the 5V and GND pins on the Arduino. Can you try adding external power to the VIN and GND pins? (Circled in red in the image below)

    Due to current limitations of USB input, we recommend a DC power supply always be connected to the Arduino's DC input. This recommendation is noted on page 5 of the NHD-FT81x-SHIELD user guide.

    Is it possible for you to provide external power to the Arduino Uno's DC jack? Arduino's accept 7-12V power. Please make sure the power supply can provide at least 1A of output current.

    If you have any questions, don't hesitate to ask.

    Best Regards,

    Cody J.

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  • Daniel Marano

    Hi Cody,

    Connecting to VIN works! I got the sketch project up and running and it looks great. thanks for your help!

    Best Regards,

    Daniel

     

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  • Cody J.
    NHD Staff

    Hello Daniel,

    It is great to hear everything is working!

    If you have any questions or issues during development, don't hesitate to reach out again.

    Best Regards,

    Cody J.

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