A simple Arduino library for interfacing with the HC-SR04 Ultrasonic Sensor.

QuickUltrasonic provides an easy-to-use C++ class for measuring distances using the HC-SR04 ultrasonic sensor. It abstracts away the low-level pin handling and timing, letting you focus on your project.

• Simple API for distance measurement
• Configurable trigger and echo pins
• Supports measurements in centimeters or raw microseconds
• Adjustable measurement delay

• HC-SR04 Ultrasonic Sensor

#include "QuickUltrasonic.h"

Ultrasonic sensor(9, 10); // Trigger pin 9, Echo pin 10

void setup() {
    Serial.begin(9600);
}

void loop() {
    float distance = sensor.getDistance(); // Default: centimeters
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm");
    delay(500);
}

Ultrasonic(uint8_t triggerPin, uint8_t echoPin, bool inCm = true, uint16_t delayTime = 50);

• triggerPin: Arduino pin connected to the sensor's trigger
• echoPin: Arduino pin connected to the sensor's echo
• inCm: true for centimeters, false for raw microseconds (default: true)
• delayTime: Delay before measurement in milliseconds (default: 50)

• float getDistance(uint16_t delayTime = DelayTime, bool inCm = InCm);
  Measure distance. Optional parameters override defaults.
• void setDelay(uint16_t delayTime);
  Set the measurement delay.
• void setMeasurement(bool inCm);
  Set measurement unit (true for cm, false for microseconds).

MIT License

Ethan Mahlstedt