编号：simple_LCD1602
[code] #include <LiquidCrystal.h> const int rs = 12, en = 10, d4 = 6, d5 = 5, d6 = 4, d7 = 3; LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void setup() { // put your setup code here, to run once: lcd.begin(16, 2); // Print a message to the LCD. lcd.print("hello, world!"); delay(3000); }
void loop() { // put your main code here, to run repeatedly: for(int a=1; a<=9; a ){ for(int b=1; b<=9; b ){ lcd.setCursor(0,1); lcd.print(a); lcd.print('*'); lcd.print(b); lcd.print('='); lcd.print(a*b); delay(1000); } lcd.clear(); } } [/code]
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编号：tmp_hm_LCD1602
[code] #include "DHT.h" #define DHTPIN 7 //DHT11传感器的数据管脚和UNO7号管脚相连 #define DHTTYPE DHT11 ///定义传感器类型DHT11
#include <LiquidCrystal.h> const int rs = 12, en = 10, d4 = 6, d5 = 5, d6 = 4, d7 = 3; ///定义液晶屏每个管脚
#define ALARM_LED 8 //定义LED8号连接管脚 #define BEEP 9 //定义蜂鸣器的连接管脚为9号
DHT dht(DHTPIN, DHTTYPE); LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
float temp, humd; ///定义温度和湿度变量 float htIndex; //热指数
void setup() { // put your setup code here, to run once: pinMode(ALARM_LED, OUTPUT); pinMode(BEEP, OUTPUT); dht.begin(); lcd.begin(16, 2); lcd.setCursor(2,0); lcd.print("TEMPERAUTRE & "); lcd.setCursor(0,1); lcd.print("HUMIDITY MONITOR"); delay(3000); }
void loop() { // put your main code here, to run repeatedly: lcd.setCursor(0,0); lcd.clear(); temp = dht.readTemperature(); ///读取温度值 humd = dht.readHumidity(); ///读取湿度值 lcd.print(" Temperature="); lcd.print(temp, 1); lcd.write(0B11011111); lcd.write(0B01000011); //显示摄氏度符号 lcd.print(" "); lcd.print("Humidity="); lcd.print(humd, 1); lcd.print(%)； for(int i=0; i<24; i ){ lcd.scrollDisplayLeft(); delay(500); } lcd.clear(); lcd.setCursor(0,0); lcd.print("T:"); lcd.print(temp,1); lcd.write(0B11011111); lcd.write(0B01000011); //显示摄氏度符号 lcd.print(" "); lcd.print("H:"); lcd.print(humd, 1); lcd.print('%'); delay(3000); htIndex = dht.computeHeatIndex(); if(htIndex <=80){ ///安全范围内 digitalWrite(ALARM_LED, LOW); digitalWrite(BEEP, LOW); lcd.setCursor(0,1); lcd.print("HtIndx="); lcd.print(htIndex,0); lcd.print(" :SAFE"); } else if(htIndex >80 && htIndex <= 101){ ///不适范围内 digitalWrite(ALARM_LED, HIGH); digitalWrite(BEEP, LOW); lcd.setCursor(0,1); lcd.print("HtIndx="); lcd.print(htIndex,0); lcd.print(" :WARN"); } else if(htIndex > 101){ ///危险范围内 digitalWrite(ALARM_LED, HIGH); digitalWrite(BEEP, HIGH); lcd.setCursor(0,1); lcd.print("HtIndx="); lcd.print(htIndex,0); lcd.print(":DANGER"); } delay(3000); } [/code]