Arduino - LCD 1.8inch

Schema:

Code:

#include <Adafruit_GFX.h> // Core graphics library

#include <Adafruit_ST7735.h> // Hardware-specific library

#include <SPI.h>

// For the breakout, you can use any 2 or 3 pins

// These pins will also work for the 1.8" TFT shield

#define TFT_CS 10

#define TFT_RST 9 // you can also connect this to the Arduino reset

// in which case, set this #define pin to 0!

#define TFT_DC 8

// Option 1 (recommended): must use the hardware SPI pins

// (for UNO thats sclk = 13 and sid = 11) and pin 10 must be

// an output. This is much faster - also required if you want

// to use the microSD card (see the image drawing example)

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// Option 2: use any pins but a little slower!

#define TFT_SCLK 13 // set these to be whatever pins you like!

#define TFT_MOSI 11 // set these to be whatever pins you like!

//Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

#define trigPin 4

#define echoPin 2

float p = 3.1415926;

void setup(void) {

// Use this initializer if you're using a 1.8" TFT

tft.initR(INITR_BLACKTAB); // initialize a ST7735S chip, black tab

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

tft.setTextWrap(false);

tft.fillScreen(ST7735_BLACK);

tft.setCursor(0, 30);

tft.setTextColor(ST7735_RED);

tft.setTextSize(1);

}

void loop() {

long duration, distance;

digitalWrite(trigPin, LOW); // Added this line

delayMicroseconds(2); // Added this line

digitalWrite(trigPin, HIGH);

delayMicroseconds(10); // Added this line

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

tft.fillScreen(ST7735_BLACK);

tft.setCursor(0, 30);

tft.setTextColor(ST7735_RED);

tft.setTextSize(1);

if (distance >= 200 || distance <= 0){

tft.println("out of range");

}

else {

tft.println(distance);

tft.println(" cm?");

}

delay(500);

}