NHD-7.0-800480FT-CSXN-CTP, issues controlling with Teensy 3.6

ironhydroxide

• December 30, 2018 10:07

Hi.
recently I bought one of these screens, (7", capacitive touch) and have been trying to get any of the test/example sketches to work with it.

I'm using a Teensy 3.6, programmed with the arduino IDE and teensyduino.   The teensy is confirmed working (have used it on other projects, as well as the generic "blink").

I have the teensy/Display wiring as follows:
Teensy--NHD
CS0(dig10)--IDC6
MOSI0(dig11)--IDC5
MISO0(dig12)--IDC4
SCK0(dig13)--IDC3
dig8--IDC8
dig9--IDC7

I have also wired the display to an adjustable power supply (3.3vdc) as follows Teensy is also powered by the same supply.
Pins 1, 17, 18 to 3.3v
Pins 2, 19, 20 to Gnd

Sketch compiles and uploads without error, but I get zero response from the screen.
Any help on what to check?

Thanks

0

• 

  Ted M.

  NHD Staff

  • February 26, 2020 10:07

  Running the NHD-7.0-800480FT-CSXN-CTP on 3.3vdc will require a lot of current in order to drive the backlight.  I would suggest a 2 Amp source.
  If possible, use the 5v supply for this display as the backlight will run more efficiently and not draw down the power source as much.
  
  Here is a link to the Gameduino Library which may be useful for your project as it works with the Teensy:
  http://excamera.com/sphinx/gameduino2/code.html
  
  Regards,

  0

Please sign in to leave a comment.