mixly图形编程LCD1602显示的超声波测距程序

ID:313638 · 发表于 2020-2-27 18:50

//Arduino超声波测距程序

#include <LiquidCrystal_SoftI2C.h>

#include <SoftI2CMaster.h>

LiquidCrystal_SoftI2C mylcd(0x27,16,2,A5,A4);

volatile int distance;

float checkdistance_2_4() {

digitalWrite(2, LOW);

delayMicroseconds(2);

digitalWrite(2, HIGH);

delayMicroseconds(10);

digitalWrite(2, LOW);

float distance = pulseIn(4, HIGH) / 58.00;

delay(10);

return distance;

}

void setup(){

distance = 0;

pinMode(2, OUTPUT);

pinMode(4, INPUT);

mylcd.init();

mylcd.backlight();

}

void loop(){

distance = checkdistance_2_4();

mylcd.clear();

mylcd.setCursor(0, 0);

mylcd.print("distance");

mylcd.setCursor(0, 1);

mylcd.print(String(String(distance, DEC)) + String("cm"));

delay(200);

}

ID:820761 · 发表于 2021-1-4 15:36

有没有接线图的照片

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