Hi, the following code is designed to turn on fans when my green house gets too hot. so far it works initially but then seems to fail and enter a resetting mode. Is it related to my use of delays or is it potentially related to the 4 relay being underpowered when three of the relays are on?
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 4
#define WATER_VALVE 6
#define FAN_OUT 5
#define FAN_IN 3
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
DeviceAddress ambientThermometer = {
0x28, 0x05, 0x15, 0x5C, 0x06, 0x00, 0x00, 0x40 };
DeviceAddress soilThermometer = {
0x28, 0x43, 0x05, 0x5D, 0x06, 0x00, 0x00, 0x74 };
void setup(void)
{
// start serial port
Serial.begin(9600);
// Start up the library
sensors.begin();
// set the resolution to 10 bit (good enough?)
sensors.setResolution(ambientThermometer, 10);
sensors.setResolution(soilThermometer, 10);
//sensors.setResolution(dogHouseThermometer, 10);
pinMode(WATER_VALVE, OUTPUT);
pinMode(FAN_OUT, OUTPUT);
pinMode(FAN_IN, OUTPUT);
digitalWrite(FAN_OUT, LOW);
digitalWrite(FAN_IN, LOW);
}
void printTemperature(DeviceAddress deviceAddress)
{
float tempC = sensors.getTempC(deviceAddress);
if (tempC == -127.00) {
Serial.print("Error getting temperature");
} else {
// Serial.print("C: ");
// Serial.print(tempC);
Serial.print(" F: ");
Serial.print(DallasTemperature::toFahrenheit(tempC));
}
}
void loop(void)
{
delay(2000);
Serial.print("Getting temperatures...\n\r");
sensors.requestTemperatures();
Serial.print("ambient temperature is: ");
printTemperature(ambientThermometer);
Serial.print("\n\r");
Serial.print("soil temperature is: ");
printTemperature(soilThermometer);
Serial.print("\n\r");
Serial.print ("soil moisture ");
Serial.println(analogRead(0));
//Read analog pin A0 and print it (prints newline)
if(analogRead(0)>850)
//if soil humidity above - 550 on/off (change HIGH to LOW if needed) electrovalve
{
digitalWrite(WATER_VALVE, LOW);
delay(4000);
}
else
{
digitalWrite(WATER_VALVE, HIGH);
delay(4000);
}
sensors.requestTemperatures();
float ambientThermometerF = DallasTemperature::toFahrenheit(sensors.getTempC(ambientThermometer));
float diff = ambientThermometerF;
//Serial.print(diff);
Serial.print("turn ");
if ((diff) > 70) {
Serial.println("fans on");
digitalWrite(FAN_IN, HIGH);
digitalWrite(FAN_OUT, HIGH);
} else {
Serial.println("fans off");
digitalWrite(FAN_IN, LOW);
digitalWrite(FAN_OUT, LOW);
}
delay(6000);
}
