เครื่องช่วยจอดรถ
อุปกรณ์
Arduino Nano แถมสาย USB https://raka.is/r/Jzgk
HC-SR04 Ultrasonic Sensor Module https://raka.is/r/ejen
โฟโต้บอร์ด https://raka.is/r/BJpQ
โค้ด
#define Trig 2
#define Echo 3
const int LED = 4;
long duration;
int distance;
void setup() {
pinMode(LED, OUTPUT);
pinMode(Trig, OUTPUT);
pinMode(Echo, INPUT);
}
void loop() {
digitalWrite(Trig, LOW);
delayMicroseconds(5);
digitalWrite(Trig, HIGH);
delayMicroseconds(10);
digitalWrite(Trig, LOW);
duration = pulseIn(Echo, HIGH);
distance = duration * 0.034 / 2;
if (distance <= 20)
{
digitalWrite(LED, HIGH);
delay(40);
}
else {
digitalWrite(LED, LOW);
}
}
hc-sr04 echo 在 How to use HC-SR04 Ultrasonic Sensor with ... - YouTube 的推薦與評價
SunFounder HC - SR04 consists of ultrasonic transmitter, receiver, and control circuit. Mode of Connection: VCC/ trig(T)/ Echo (R)/ GND (VCC ... ... <看更多>