Hi. I took a series of codes from CircuitMagic to run a PIR sensor with an Arduino; works without a hitch. I try to incorporate Blynk so I can view on my phone whether the LED is on or off; once I do that, the sensor doesn’t work and the LED on the Arduino board remains ON. What am I doing wrong? Thanks for looking through this.
#define BLYNK_PRINT Serial //I added this line
#include <SPI.h> //I added this line
#include <Ethernet.h> //I added this line
#include <BlynkSimpleEthernet.h> //I added this line
char auth[] = "auth code"; //I added this line
int calibrationTime = 30;
long unsigned int lowIn;
long unsigned int pause = 5000;
boolean lockLow = true;
boolean takeLowTime;
int pirPin = 3;
int ledPin = 13;
void setup(){
Serial.begin(9600);
Blynk.begin(auth); //I added this line
pinMode(pirPin, INPUT);
pinMode(ledPin, OUTPUT);
digitalWrite(pirPin, LOW);
Serial.print("calibrating sensor ");
for(int i = 0; i < calibrationTime; i++){
Serial.print(".");
delay(1000);
}
Serial.println(" done");
Serial.println("SENSOR ACTIVE");
delay(50);
}
void loop(){
Blynk.run(); //I added this line
if(digitalRead(pirPin) == HIGH){
digitalWrite(ledPin, HIGH);
Blynk.virtualWrite(V14, HIGH); //I added this line
if(lockLow){
lockLow = false;
Serial.println("---");
Serial.print("motion detected at ");
Serial.print(millis()/1000);
Serial.println(" sec");
delay(50);
}
takeLowTime = true;
}
if(digitalRead(pirPin) == LOW){
digitalWrite(ledPin, LOW);
Blynk.virtualWrite(V14, LOW); //I added this line
if(takeLowTime){
lowIn = millis();
takeLowTime = false;
}
if(!lockLow && millis() - lowIn > pause){
lockLow = true;
Serial.print("motion ended at ");
Serial.print((millis() - pause)/1000);
Serial.println(" sec");
delay(50);
}
}
}