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Какой человек самый сильный? - Тот, кто способен познать Истину.
Изотерика это хорошо. А что хрустальный шар говорит о скетчах.
/*
* Ultrasonic Simple
* Prints the distance read by an ultrasonic sensor in
* centimeters. They are supported to four pins ultrasound
* sensors (liek HC-SC04) and three pins (like PING)))
* and Seeed Studio sensors).
*
* The circuit:
* * Module HR-SC04 (four pins) or PING))) (and other with
*   three pins), attached to digital pins as follows:
* ---------------------    --------------------
* | HC-SC04 | Arduino |    | 3 pins | Arduino |
* ---------------------    --------------------
* |   Vcc   |   5V    |    |   Vcc  |   5V    |
* |   Trig  |   12    | OR |   SIG  |   13    |
* |   Echo  |   13    |    |   Gnd  |   GND   |
* |   Gnd   |   GND   |    --------------------
* ---------------------
* Note: You do not obligatorily need to use the pins defined above
*
* By default, the distance returned by the read()
* method is in centimeters. To get the distance in inches,
* pass INC as a parameter.
* Example: ultrasonic.read(INC)
*
* created 3 Apr 2014
* by Erick Simões (github: @ErickSimoes | twitter: @AloErickSimoes)
* modified 23 Jan 2017
* by Erick Simões (github: @ErickSimoes | twitter: @AloErickSimoes)
* modified 03 Mar 2017
* by Erick Simões (github: @ErickSimoes | twitter: @AloErickSimoes)
* modified 11 Jun 2018
* by Erick Simões (github: @ErickSimoes | twitter: @AloErickSimoes)
*
* This example code is released into the MIT License.
*/

#include <Ultrasonic.h>

/*
* Pass as a parameter the trigger and echo pin, respectively,
* or only the signal pin (for sensors 3 pins), like:
* Ultrasonic ultrasonic(13);
*/
Ultrasonic ultrasonic(12, 13);
int distance;

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

void loop() {
  // Pass INC as a parameter to get the distance in inches
  distance = ultrasonic.read();
 
  Serial.print("Distance in CM: ");
  Serial.println(distance);
  delay(1000);