Issue Arduino UNO R3 and Adafruit 2.8" TFT Touch Shield w/ Cap Touch 1947

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1

Hi, I'm wondering If I could get any help here.

I'm starting to play around with my Arduino UNO R3 (purchased on the arduino website). I decided to give this touchscreen a try and bought this Adafruit 2.8" TFT Touch Shield w/ Cap Touch 1947 (purchased on Digikey).

The box advises to visit 2.8 TFT Touch Shield for Arduino with Capacitive Touch : ID 1947 : Adafruit Industries, Unique & fun DIY electronics and kits and among the downloads you get the library ILI934 version 1.6.1, which I downloaded and installed. Many code examples are provided but they work only partially, it seems to me that the touch function doesn't work.

LIBRARY EXAMPLE | STATUS
graphictest | works
mandelbrot | displays an orange screen and that's it
onoffbutton | displays a blue/red button in a corner but does nothing
touchpaint | displays color palette on the side but doesn't do anything

I went throught this forum, and some people seemed to experience the same issue, but I couldn't find useful info.

I also tried the Adafruit Touchscreen-master library and its example doesn't work either:

touchscreendemoshield | Displays a white screen and I get X = 342 Y= 507 PRESSURE = 38 --> X = 330 Y= 508 PRESSURE = 38 etc... on the serial monitor.

I'm a beginner and may have a large blind spot. Anyone knows how I could test the touch function of my screen?

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I was searching for a long time before that first post, and literally minutes after reading a bit more on the topic it seems that the capacitive screen requires this library : "FT6206 Library" and there the versions of the example scripts touchpaint and onoffbutton work.