Hello. I am currently doing a project wherein I’m using a US-100 Ultrasonic as a proximity sensor to detect objects within less than or equal to 3 inches. I asked for the help of someone and he gave me these codes to which I tried but got an error that the ‘NewPing’ does not name a type. I tried emailing him again to ask how to solve it but has still gotten no reply. I also tried fixing the code by myself but couldn’t seem to figure out the right way. I hope any of you could help me in this problem. Thank you very much.
/*-----( Import needed libraries )-----*/
#include <NewPing.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define TRIGGER_PIN 11
#define ECHO_PIN 10
#define MAX_DISTANCE 14 // Maximum distance we want to ping for (in centimeters).
//Maximum sensor distance is rated at 400-500cm.
/*-----( Declare objects )-----*/
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.
/*-----( Declare Variables )-----*/
int DistanceIn;
int DistanceCm;
void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
Serial.println("UltraSonic Distance Measurement");
Serial.println("YourDuino.com terry@yourduino.com");
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
delay(100);// Wait 100ms between pings (about 10 pings/sec). 29ms should be the shortest delay between pings.
DistanceIn = sonar.ping_in();
Serial.print("Ping: ");
Serial.print(DistanceIn); // Convert ping time to distance and print result
// (0 = outside set distance range, no ping echo)
Serial.print(" in ");
delay(100);// Wait 100ms between pings (about 10 pings/sec). 29ms should be the shortest delay between pings.
DistanceCm = sonar.ping_cm();
Serial.print("Ping: ");
Serial.print(DistanceCm);
Serial.println(" cm");
if ( (DistanceCm <= 7) && (DistanceCm != 0) )
{
Serial.println("3 Inches or closer! ");
}
