LCD 1602 代码编写

附加LCD1602：

LCD 1602的连接与使用
mixly中的简化代码：

• 电路连接图

1 table

• 实物图

  
  实物图
  程序图

#include <LiquidCrystal.h>

LiquidCrystal mylcd(12,11,5,4,3,2);

void setup(){
  mylcd.begin(16,2);
  mylcd.display();
}

void loop(){
  mylcd.setCursor(0, 0);
  mylcd.print("HELLO");
  mylcd.setCursor(0, 1);
  mylcd.print("WORLD");

}

#include <LiquidCrystal.h> //Load Liquid Crystal Library

LiquidCrystal  LCD(10,  9,  5,  4,  3,  2);  //Create Liquid Crystal Object called LCD

int  myCounter=0;  //declare your variable myCounter and set to 0

void  setup()  {

LCD.begin(16,2);  //Tell Arduino to start your 16 column 2 row LCD

LCD.setCursor(0,0);  //Set LCD cursor to upper left corner, column 0, row 0

LCD.print("My Timer:");  //Print Message on First Row

}

void  loop()  {

  for  (myCounter=1;  myCounter<=10;  myCounter=myCounter+1)  {

 LCD.setCursor(0,1);  //Go to 1st column(column 0) and 2nd row(row 1)

 LCD.print(myCounter);

 LCD.print(" Seconds");  

 delay(1000);

    }

  for  (myCounter=10;myCounter>=0;myCounter=myCounter-1)  {

 LCD.setCursor(0,1);  //Go to 1st column(column 0) and 2nd row(row 1)

 LCD.print(myCounter);

 LCD.print(" Seconds");  

 delay(1000);

  }  

}

 

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vexing problem 烦恼问题

#include <LiquidCrystal.h> //Load Liquid Crystal Library
LiquidCrystal LCD(10, 9, 5, 4, 3, 2);  //Create Liquid Crystal Object called LCD
int myCounter=0;  //declare your variable myCounter and set to 0

void setup() {
 
LCD.begin(16,2); //Tell Arduino to start your 16 column 2 row LCD
LCD.setCursor(0,0);  //Set LCD cursor to upper left corner, column 0, row 0
LCD.print("My Timer:");  //Print Message on First Row
}

void loop() {
  for (myCounter=1; myCounter<=10; myCounter=myCounter+1) {
     LCD.setCursor(0,1); //Go to 1st column(column 0) and 2nd row(row 1)
     LCD.print("                "); //Print blanks to clear the row
     LCD.setCursor(0,1); //Go to 1st column(column 0) and 2nd row(row 1)
     LCD.print(myCounter); 
     LCD.print(" Seconds");  
     delay(1000);
    }

  for (myCounter=10;myCounter>=0;myCounter=myCounter-1) {
     LCD.setCursor(0,1); //Go to 1st column(column 0) and 2nd row(row 1)
     LCD.print("                "); //Print blanks to clear the row
     LCD.setCursor(0,1); //Go to 1st column(column 0) and 2nd row(row 1)
     LCD.print(myCounter); 
     LCD.print(" Seconds");  
     delay(1000);
  }

• 连接图2

  
  连接图

正极 程序 colo
https://detail.tmall.com/item.htm?spm=a230r.1.14.6.99da4c6aPUWRL5&id=530432143336&cm_id=140105335569ed55e27b&abbucket=10 trigger

int trigPin=13; //Sensor Trip pin connected to Arduino pin 13
int echoPin=11;  //Sensor Echo pin connected to Arduino pin 11
float pingTime;
float speedOfSound;
int targetDistance=6; //Distance to Target in inches
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly: 
  
  digitalWrite(trigPin, LOW); //Set trigger pin low
  delayMicroseconds(2000); //Let signal settle
  digitalWrite(trigPin, HIGH); //Set trigPin high
  delayMicroseconds(10); //Delay in high state
  digitalWrite(trigPin, LOW); //ping has now been sent
  
  pingTime = pulseIn(echoPin, HIGH);  //pingTime is presented in microceconds
 
  speedOfSound = (targetDistance*2)/pingTime*(1000000)*3600/63360;        //converts to miles per hour
  Serial.print("The Speed of Sound is: ");
  Serial.print(speedOfSound);
  Serial.println(" miles per hour");
  delay(1000);
  
}

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