I got this lcd with touchscreen from a store but i have no idea on how to connect it to the arduino uno. Any help is appreciated.

This is where i bought it from.

The display

My Arduino

  • 1
    your device uses two controllers. ILI9341 and XPT2046.
    – jsotola
    Jan 7, 2018 at 16:17
  • Maybe, then, you should buy your toys from somewhere that at least gives you a clue what to do with them. Anyway, the pins are clearly marked.
    – Majenko
    Jan 7, 2018 at 16:17
  • section 7.6 of the ILI9341 datasheet
    – jsotola
    Jan 7, 2018 at 16:21
  • @Majenko in romania this kind of resources are found in a very small amount of shops.
    – xM0nSt3r
    Jan 7, 2018 at 16:30
  • @jsotola i am new to this stuff, can you help me understand what is going on there?
    – xM0nSt3r
    Jan 7, 2018 at 16:35

2 Answers 2


You can get it working by two methods

  1. using a voltage divider e.g to shift from 5V to 3.3V you could use two resistors, 100k and 200k respecfully and between both resistors there is voltage of 3.3. One for each pin that needs it.

  2. Using 10K resistors in series between the LCD and the arduino. I really don't know how is working but it works fine that way.

I tested both methods, also the MISO pin from the LCD can be connected directly to your arduino.

  1. Download and install a suitable library
  2. Wire the display to the Arduino as per the markings on the display
  3. Try some of the examples for the library you are using.
  • Can you give me more details about the wiring?
    – xM0nSt3r
    Jan 7, 2018 at 17:50
  • Read the words on the board and compare them to either the SPI manual page or the instructions for the library.
    – Majenko
    Jan 7, 2018 at 17:51
  • but can i use transistors to lower the voltage instead of that logic level translator?
    – xM0nSt3r
    Jan 7, 2018 at 17:54
  • Sorry, what are you talking about?
    – Majenko
    Jan 7, 2018 at 17:55
  • on the page i mentioned in the question it says i have to use this to make it work, can i replace that with transistors?
    – xM0nSt3r
    Jan 7, 2018 at 17:57

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