Hello,

I want to use 4 HC-SR04 sensors with the ESP32. Currently I am developing using the Arduino IDE.
Below is the code I am using:
// Pins
#define SENSORS_NUM 3

#define TRIG_PIN_1 2
#define ECHO_PIN_1 4

#define TRIG_PIN_2 12
#define ECHO_PIN_2 14

#define TRIG_PIN_3 26
#define ECHO_PIN_3 25 ...