Arduino Resistive Touch Screen

This tutorial shows how to interface 4 wire touch screen using arduino.

Arduino resistive touch screen. Adafruit industries unique fun diy electronics and kits 2 8 tft touch shield for arduino with resistive touch screen id. Normally you ll need 4 pins to talk to the touch panel but we decided to go all snazzy and put a dedicated touch screen driver onto the shield. There s two versions of the shield. Resistive touchscreen displays are composed of multiple layers that are separated by thin spaces.

Adafruit invests time and resources providing this open source code please support adafruit and open source hardware by purchasing products from adafruit. Trying to get this touch screen display working has caused some people frustration. Two of the wires one x and one y are connected to a couple of the analog inputs on the arduino. The unit came in an anti static bag as shown in the pictures with a stylus and no documentation.

Adafruit touchscreen library. Arduino uno leonardo uno plus nucleo xnucleo onboard stand alone touch controller better touching than solutions that use ad pins directly for touch control. You can use this for detecting finger presses stylus etc. Uno r3 2 8 tft touch screen with sd card socket for arduino board module.

This shield uses a 4 wire analog resistive touchscreen as described earlier. The touchscreen membrane is the set of resistive elements that sit on top of the display. One has a resistive touch screen one has a capacitive one. The microsd card is the same too.

Resistive touch screen tft lcd 4inch 480x320 resolution standard arduino interface compatible with development boards like. This tutorial is useful for all microcontrollers to know how to interface reisistive touchscreen. The lcd has a 2 8 4 wire resistive touch screen glued onto it. This is the 4 wire resistive touch screen firmware for arduino.

1651 spice up your arduino project with a beautiful large touchscreen display shield with built in microsd card connection. Works with all arduinos and teensy. The tft display and pinouts is the same for both. The differences come in on the touch screen controller and whether the spi pins are connected to pins 11 13 or the icsp header by default.

The driver shares the spi pins with the tft and sd card so only one extra pin is needed digital 8 this allows you to query.