boa noite. tenho a plataforma do Arduino como um hobby. e no meu projeto estou tentando fazer o sensor de movimento só ser ativado quando a luz do ambiente estiver suficientemente baixa. porém não estou iniciando meu aprendizado em programação... se alguém puder me ajudar agradeço
void setup()
{
pinMode(A0, INPUT);
pinMode(5, OUTPUT);
pinMode(3, INPUT);
}
void loop()
{
if (analogRead(A0) < 200) {
digitalWrite(5, LOW);
} else {
digitalWrite(5, HIGH);
}
if (digitalRead(3) < HIGH) {
digitalWrite(5, LOW);
} else {
digitalWrite(5, HIGH);
}
delay(10); // Delay a little bit to improve simulation performance
}
o pino A0 é o sensor de luz
o pino 5 é o LED
o pino 3 é o sensor de movimento
obrigado pessoal
Tens de encadear os if's...
if (analogRead(A0) < 200 && digitalRead(3) != HIGH) {
digitalWrite(5, LOW);
} else {
digitalWrite(5, HIGH);
}
coincidentemente, brinquei com um project muito similar hoje a tarde:
Controlo um Relê a partir de um sensor de movimento e um sensor de Luz. O relê só ativa se estiver escuro e algum movimento for detectado. Depois de um tempo pre-determinado, sem movimento detectado, o relê desliga.
/*
* //////////////////////////////////////////////////
* //making sense of the Parallax PIR sensor's output
* //////////////////////////////////////////////////
*
* Switches a LED according to the state of the sensors output pin, if it's dark.
*
* @Author: Ruy Cesar (mtnviewguy at gmail ponto com)
* @date: 8. May 2019
*
* released under a creative commons "Attribution-NonCommercial-ShareAlike 2.0" license
* http://creativecommons.org/licenses/by-nc-sa/2.0/de/
*
* The Parallax PIR Sensor is an easy to use digital infrared motion sensor module.
* (http://www.parallax.com/detail.asp?product_id=555-28027)
*
* The PIR sensor's output pin goes HIGH if motion is present.
*
* Also used on this sketch is a standard Photoresistor.
*
* Resistance decreases if more light shines on its surface
* - In well lit room, resistance is < 10K OHM
* - In darkness, typical resistance is > 1M OHM
*
*/
/////////////////////////////
//VARS
//the time we give the PIR motion sensor to calibrate (10-60 secs according to the datasheet)
int calibrationTime = 20;
// PIR motion sensor output pin (used Analog on Nano brd because it was easy to wire).
int sensorPin = A7;
// photoresistor pin 1 (added a 200K OHM pull down resistor on P1; photoresistor pin2 = Nano bd 3.3V)
int lightdetpin = A2;
//Output pin that controlls LED/relay
int ledPin = 13;
// time of last detected motion (used to verify if time out occured)
long unsigned int last_motion;
// turn off LED/rellay 'pause' miliseconds after last motion was detected
long unsigned int pause = 100000;
/////////////////////////////
//SETUP
void setup(){
Serial.begin(9600);
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW); //start with LED/rellay OFF
//give the PIR sensor some time to calibrate
Serial.print("calibrating sensor ");
for(int i = 0; i < calibrationTime; i++){
Serial.print(".");
delay(1000);
}
Serial.println(" done");
Serial.println("SENSOR ACTIVE");
delay(50);
}
////////////////////////////
//LOOP
void loop(){
while(analogRead(lightdetpin > 200)) { // while it's dark, check motion sensor
if(analogRead(sensorPin) > 400){ // if motion, turn on LED/relay
Serial.print(analogRead(lightdetpin));
Serial.println("---");
digitalWrite(ledPin, HIGH); // save(reset) last motion time
last_motion = millis();
delay(500);
}
if(analogRead(sensorPin) < 200){ // if no motion, check for time-out
Serial.print(analogRead(lightdetpin));
Serial.println("---");
if((last_motion + pause) < millis()) {
digitalWrite(ledPin, LOW); //If timout (no motion > pause) turn relay off
delay(500);
}
}
}
}
/* if(takeLowTime){
lowIn = millis(); //save the time of the transition from high to LOW
takeLowTime = false; //make sure this is only done at the start of a LOW phase
}
//if the sensor is low for more than the given pause,
//we assume that no more motion is going to happen
if(!lockLow && millis() - lowIn > pause){
//makes sure this block of code is only executed again after
//a new motion sequence has been detected
lockLow = true;
Serial.print("motion ended at "); //output
Serial.print((millis() - pause)/1000);
Serial.println(" sec");
delay(50);
}
}
}*/
Pessoal, boa tarde.
Caso precisem de peças Arduino e com valores acessíveis, a Eletrogate https://www.eletrogate.com/kit-robotica tem as melhores peças com os melhores preços do mercado.