Stap 3: Code (zonder LCD)
Ik gebruikte de NewPing-bibliotheek, die uw leven veel gemakkelijker met deze sensor maakt. Download de bibliotheekbestanden hier en zie documentatie hier. Deze bibliotheek werkt niet alleen met de SR04 maar ook deze ones: SRF05, SRF06, DYP-ME007 & Parallax PING)))™.
De code die ik gebruikt:
#include <NewPing.h> #define TRIGGER_PIN 6 // Arduino pin tied to trigger pin on the ultrasonic sensor. #define ECHO_PIN 7 // Arduino pin tied to echo pin on the ultrasonic sensor. #define MAX_DISTANCE 300 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // Creating the NewPing Object.void setup() { Serial.begin(115200); // Begin serial com. at 115200 baud rate. }void loop() { delay(50); // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings. unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS). Serial.print("Ping: "); Serial.print(uS / US_ROUNDTRIP_CM); // Convert ping time to distance in cm and print result (0 = outside set distance range) Serial.println("cm"); //If you would like ping in inches, remove "US_ROUNDTRIP_CM" and the backslash, don't forget to rename "cm" to "inches" }