如何使用 tinkercard 在停车场项目中使用 lcd

问题描述

我正在尝试使用 arduino 进行停车场项目，但液晶显示器并未真正输出正确的单词。例如“清除”我被输出“cdeared”

#include <LiquidCrystal.h>
#define green 13
#define yellow 12
#define red 11
#define buzzer 10
LiquidCrystal lcd(2,3,4,5,6,7);
int inches = 0;
int cm = 0;

long readUltrasonicdistance(int triggerPin,int echoPin)
{
  pinMode(triggerPin,OUTPUT);  // Clear the trigger
  digitalWrite(triggerPin,LOW);
  delayMicroseconds(2);
  // Sets the trigger pin to HIGH state for 10 microseconds
  digitalWrite(triggerPin,HIGH);
  delayMicroseconds(10);
  digitalWrite(triggerPin,LOW);
  pinMode(echoPin,INPUT);
  // Reads the echo pin,and returns the sound wave travel time in microseconds
  return pulseIn(echoPin,HIGH);
}

void setup()
{
  Serial.begin(9600);
  pinMode(green,OUTPUT);
  pinMode(yellow,OUTPUT);
  pinMode(red,OUTPUT);
  pinMode(buzzer,OUTPUT);
  lcd.begin(16,2);
}

void loop()
{
  // measure the ping time in cm
  cm = 0.01723 * readUltrasonicdistance(7,7);
  // convert to inches by dividing by 2.54
  inches = (cm / 2.54);
  Serial.print(inches);
  Serial.print("in,");
  Serial.print(cm);
  Serial.println("cm");
  delay(100); // Wait for 100 millisecond(s)
  
  if(cm>=100)
  {
    digitalWrite(green,HIGH);
    delay(500);
    digitalWrite(green,LOW);
    delay(500);
    lcd.setCursor(0,0);
    lcd.print("All cleared :) ");
    lcd.clear();
  } 
    
     else if(cm>=50 && cm<100)
  {
    digitalWrite(yellow,HIGH);
    delay(500);
    digitalWrite(yellow,0);
    lcd.print("Traffic,be keen : ");
    lcd.clear();
     } 
       else if(cm>=25 && cm<50)
  {
    digitalWrite(red,HIGH);
    delay(500);
    digitalWrite(red,0);
    lcd.print("Very Close,be keen : ");
    lcd.clear();
     } 
       else if(cm<25)
    {
    digitalWrite(buzzer,HIGH);
    delay(500);
    digitalWrite(buzzer,0);
    lcd.print("Danger,you should stop :( ");
         delay(10);
     } 
 
}

项目链接在这里 https://www.tinkercad.com/things/7YGUx25OlB8-copy-of-car-parking-with-ultrasonic-sensor/editel?sharecode=2wBavFGycNlhRST4WIMblZCpkXLWwaaHzYAndvYEBao 请在这方面帮助我，因为我对它还是那么陌生。

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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arduino arduino tinkercad