| /** | |
| Measure distance with Ultrasonic distance sensor. | |
| 3 APR 2025 by Blind Author | |
| */ | |
| void setup() { | |
| Serial.begin(9600); | |
| pinMode(PIN_TRIG, OUTPUT); | |
| pinMode(PIN_ECHO, INPUT); | |
| } | |
| void loop() { | |
| digitalWrite(PIN_TRIG, HIGH); | |
| delayMicroseconds(10); | |
| digitalWrite(PIN_TRIG, LOW); | |
| int duration = pulseIn(PIN_ECHO, HIGH); | |
| int centimeter = duration / 58; | |
| Serial.println("Enter a distance in cm to compare: "); | |
| delay(200); | |
| if (Serial.available() > 0) { | |
| int inputNumber = Serial.parseInt(); | |
| if (inputNumber > centimeter) { | |
| Serial.println("Measured distance is less"); | |
| } else if (inputNumber < centimeter) { | |
| Serial.println("Measured distance is greater"); | |
| } else { | |
| Serial.println("Measured distance is equal to the target"); | |
| } | |
| } | |
| } |