I want to send data from sensor DHT11 to my LCD screen but when I add LCD to my Arduino y I hit button to turn on relay + water pump my screen lcd get turn off and I don't understand it and sometimes the water pump get stuck and I don't can turn off. If I remove LCD screen from my Arduino if I hit push button turn on relay + water pump and work correctly. I use a power supply 12 V which I reduced it to 5V through the LM7805 regulator voltage. What is the problem
// Include DHT Library
#include <DHT.h>
#include <DHT_U.h>
// Including Libraries for I2C LCD
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// Sensor definitions
#define DHTPIN 5 //DHT data pin connected to Arduino pin 5
#define DHTTYPE DHT11 // DHT 11
// Actuators: Buttons and LEDS
#define PUMP_ON 11 //push-button
#define PUMP_PIN 13
#define PUMP 7 //water pump
// Variables to be used by Sensor
int tempDHT;
int humDHT;
// Variables to be used by Actuators
boolean pumpStatus = 0;
boolean LastStatus = LOW;
boolean InitStatus = LOW;
// Variables to be used with timers
long sampleTimingSeconds = 0; // ==> Define Sample time in seconds to read sensores
long startTiming = 0;
long elapsedTime = 0;
const int timeDebounce = 10;
int cont=0;
// Initialize the DHT sensor
DHT dht(DHTPIN, DHTTYPE);
// Initialize LCD
LiquidCrystal_I2C lcd(0x3F, 20, 4);
int cuenta = 0;
int statusButton;
int statusButtonLast;
void setup()
{
pinMode(PUMP_PIN, OUTPUT);
pinMode(PUMP_ON, INPUT_PULLUP); //Button
pinMode(PUMP, OUTPUT);
Serial.begin(9600);
Serial.println("ArduFarmBot Local Station Test");
dht.begin();
lcd.begin();
readSensors(); //innitial reading
startTiming = millis(); // starting the "program clock"
}
void loop()
{
//Start timer for measurements
elapsedTime = millis() - startTiming;
readLocalCmd(); //Read local button status
showDataLCD();
if(elapsedTime > (sampleTimingSeconds * 1000))
{
readSensors();
printData();
startTiming = millis();
}
}
/***************************************************
* Read data from Sensors
****************************************************/
void readSensors()
{
tempDHT = dht.readTemperature(); //Read temperature and humidity values from DHT sensor:
humDHT = dht.readHumidity();
}
/****************************************************************
* Read local commands (Pump and Lamp buttons are normally "HIGH"):
****************************************************************/
void readLocalCmd()
{
InitStatus = debounce(LastStatus); //leemos el estado del
if(LastStatus == LOW && InitStatus == HIGH)
{
pumpStatus = !pumpStatus;
cont++;
}
LastStatus = InitStatus;
showDataLCD();
aplyCmd();
}
/***************************************************
* Receive Commands and act on actuators
****************************************************/
void aplyCmd()
{
if(pumpStatus == 1)
{
digitalWrite(PUMP_PIN, HIGH);
digitalWrite(PUMP, LOW);
}
if(pumpStatus == 0)
{
digitalWrite(PUMP_PIN, LOW);
digitalWrite(PUMP,HIGH);
}
}
/***************************************************
* Showing capured data at Serial Monitor
****************************************************/
void printData(void)
{
Serial.print(" Temp DHT ==> ");
Serial.print(tempDHT);
Serial.print("oC Hum DHT ==> ");
Serial.print(humDHT);
}
/***************************************************
* Showing capured data at LCD
****************************************************/
void showDataLCD(void)
{
lcd.setCursor(0,0);
lcd.print("ArduFarmBot Ctrl St.");
lcd.setCursor (0,1);
lcd.print("Temp: ");
lcd.print(tempDHT);
lcd.print("oC Hum: ");
lcd.print(humDHT);
lcd.print("% ");
lcd.setCursor (0,2);
lcd.print("Pump: ");
lcd.print(pumpStatus);
lcd.setCursor(0,0);
}
/***************************************************
* Debouncing a key
****************************************************/
boolean debounce(boolean eLast)
{
boolean eInit = digitalRead(PUMP_ON);
if (eLast != eInit)
{
delay(5);
eInit = digitalRead(PUMP_ON);
}
return eInit;
}
Here this video issue
Code in github => github code
Mini water pump which I use
t's a mini water pump which I use.
This is
item minibomba
