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i modifed the sketch like as bellow =( still not working with 2 sonar
#include <NewPing.h>
#define SONAR_NUM 2 // Number or sensors.
#define MAX_DISTANCE 400 // Maximum distance (in cm) to ping.
#define PING_INTERVAL 100 // Milliseconds between sensor pings (29ms is about the min to avoid cross-sensor echo).
unsigned long pingTimer[SONAR_NUM]; // Holds the times when the next ping should happen for each sensor.
unsigned int cm[SONAR_NUM]; // Where the ping distances are stored.
uint8_t currentSensor = 0; // Keeps track of which sensor is active.
NewPing sonar[SONAR_NUM] = { // Sensor object array.
NewPing(5, 6, MAX_DISTANCE), // Each sensor's echo pin, trigger pin, and max distance to ping.
NewPing(7, 8, MAX_DISTANCE),
};
int pwmPins[SONAR_NUM] = {9, 10 }; // array Nomor pin utk keluaran PWM Analog out 0-5v
int ledPins[SONAR_NUM] = {12, 13};
void setup() {
Serial.begin(115200);
pingTimer[0] = millis() + 75; // First ping starts at 75ms, gives time for the Arduino to chill before starting.
for (uint8_t i = 1; i < SONAR_NUM; i++) { // Set the starting time for each sensor.
pingTimer[i] = pingTimer[i - 1] + PING_INTERVAL;
}
for (uint8_t i = 0; i < SONAR_NUM; i++) { // pwm output pin counter
pinMode(pwmPins[i], OUTPUT);
}
// initialize the digital pin as an output.
for (uint8_t i = 0; i < SONAR_NUM; i++) { // pwm output pin counter
pinMode(ledPins[i], OUTPUT);
}
Serial.println();
}
void loop()
{
for (uint8_t i = 0; i < SONAR_NUM; i++) { // Loop through all the sensors.
if (millis() >= pingTimer[i]) { // Is it this sensor's time to ping?
pingTimer[i] += PING_INTERVAL * SONAR_NUM; // Set next time this sensor will be pinged.
if (i == 0 && currentSensor == SONAR_NUM - 1) oneSensorCycle(); // Sensor ping cycle complete, do something with the results.
sonar[currentSensor].timer_stop(); // Make sure previous timer is canceled before starting a new ping (insurance).
currentSensor = i; // Sensor being accessed.
cm[currentSensor] = 0; // Make distance zero in case there's no ping echo for this sensor.
sonar[currentSensor].ping_timer(echoCheck); // Do the ping (processing continues, interrupt will call echoCheck to look for echo).
}
}
{
{
digitalWrite(ledPins[12,13], HIGH); // turn the LED on (HIGH is the voltage level)
delay(500); // wait for a second
digitalWrite(ledPins[13,12], LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
}
// Other code that *DOESN'T* analyze ping results can go here.
}
// If ping received, set the sensor distance to array.
void echoCheck()
{
if (sonar[currentSensor].check_timer())
cm[currentSensor] = sonar[currentSensor].ping_result / US_ROUNDTRIP_CM;
}
// Sensor ping cycle complete, do something with the results. Location option 1 for code processing
void oneSensorCycle()
{
for (uint8_t i = 0; i < SONAR_NUM; i++) {
// turn the pin on:
analogWrite(pwmPins[i], cm[i]);
Serial.print(i); // print sensor number accessed
Serial.print("="); // = märk
Serial.print(cm[i]); // sensor distance value
Serial.println(" -cm "); // cm
// Print format i = xxx cm
}
}
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but if i.m delete the as bellow the 2 sensor work fine :p
{
digitalWrite(ledPins[12,13], HIGH); // turn the LED on (HIGH is the voltage level)
delay(500); // wait for a second
digitalWrite(ledPins[13,12], LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
every body please help me ..... =( =(
moderator update: added code tags --> # button above smileys