Sample Project Field

Alaonix Smart LCD Display Weather Station Example Project

This is Alaonix 256x160 Smart LCD display Weather Station Data Logger project. It uses The DS1307 serial real-time clock (RTC) and SHT11 humidity and temperature sensor IC for recording Date, Time, Temperature and Humidity. The project uses Arduino Nano as controller. Below is the project detail information.

Project Test Code for Arduino Nano:

/*==============================================================
 File........Alaonix smart 256x160 LCD display module
             Weather Station Data Logger Test code for Arduino
 Purpose.....This test code for Alaonix smart 256x160 LCD display module
 Board.......Arduino nano
 Software....Arduino 1.8.13
 MCU.........Arduino ATmage328p
 Auther......Alaonix Team
 Website.....WWW.Alaonix.com
 Email.......AlaTeam@Alaonix.com
 Started.....
 Updated.....
 Note: MINIMUM CONNECTION:
       5V  <==========> Ala LCD 5V 
       GND <==========> Ala LCD GND
       Arduino Tx <===> Ala LCD Rx 
=================== Parameter =============================*/
#include "Wire.h"
#include <SHT1x.h>

#define DS1307_Addr 0x68
byte zero = 0x00; 
static char H_outstr[5];
static char T_outstr[5];

float temp_c;
float temp_f;
float humidity;
#define dataPin  10
#define clockPin 11
SHT1x sht1x(dataPin, clockPin);

void setup()
{
   Wire.begin();
   Serial.begin(19200); 
   setDateTime(); //Set DS1307 Date and Time
   //=====================================// 
   Serial.println("mr");                  // Change to root direction
   delay(100);
   Serial.println("mj,alaimage");         // Change to image direction
   delay(100);
   Serial.println("ML,0,0,1,1,face");  // Load Weather Station frame to buffer 1
   delay(100);
   Serial.println("mr");                  // Change to root direction
   delay(100);
   Serial.println("MC, 1, AlaData.csv,Date,Time,Temperature,Humidity");
   delay(100);
}

void loop(){
  ShowDataLogger();
  delay(1000);
}

void setDateTime()
{
  byte second =      00; //0-59
  byte minute =      34; //0-59
  byte hour =        2; //0-23
  byte weekDay =     4; //1-7
  byte monthDay =    17; //1-31
  byte month =       6; //1-12
  byte year  =       20; //0-99

Wire.beginTransmission(DS1307_Addr);
  Wire.write(zero); // End

Wire.write(decToBcd(second));
  Wire.write(decToBcd(minute));
  Wire.write(decToBcd(hour));
  Wire.write(decToBcd(weekDay));
  Wire.write(decToBcd(monthDay));
  Wire.write(decToBcd(month));
  Wire.write(decToBcd(year));

Wire.write(zero); //Start

Wire.endTransmission();
}

byte decToBcd(byte val){
  return ( (val/10*16) + (val%10) );
}

byte bcdToDec(byte val)  {
  return ( (val/16*10) + (val%16) );
}

void ShowDataLogger()
{
// Reset the register pointer
  Wire.beginTransmission(DS1307_Addr);
  Wire.write(zero);
  Wire.endTransmission();

//======= Read date and Time from the DS1307 =======//
  Wire.requestFrom(DS1307_Addr, 7);
  int second = bcdToDec(Wire.read());
  int minute = bcdToDec(Wire.read());
  int hour = bcdToDec(Wire.read() & 0b111111); //24 hour time
  int weekDay = bcdToDec(Wire.read()); //0-6 -> sunday - Saturday
  int monthDay = bcdToDec(Wire.read());
  int month = bcdToDec(Wire.read());
  int year = bcdToDec(Wire.read());

//======= Read values from the SHT11 sensor =======//
  temp_c = sht1x.readTemperatureC();
  temp_f = sht1x.readTemperatureF();
  humidity = sht1x.readHumidity();

dtostrf(temp_f*2+14,3, 0, T_outstr);
  dtostrf(humidity*2+14,2, 0, H_outstr);
  
//========= Send Information to Smart LCD ========//
  Serial.println("s");
  delay(10);
//================ Record data to MMC Card =======//
  Serial.print("MA, 1, AlaData.csv,");
  Serial.print(month);
  Serial.print("-");
  Serial.print(monthDay);
  Serial.print("-");
  Serial.print(year);
  Serial.print(",");

Serial.print(hour);
  Serial.print(":");
  Serial.print(minute);
  Serial.print(":");
  Serial.print(second);
  Serial.print(",");

Serial.print(temp_f);
  Serial.print(",");
  
  Serial.println(humidity);
  
  Serial.println("at,1,0"); // copy Weather Station frame to buffer 0
  //=========== Send Time Numbers =============
  Serial.print("Fa,10,185,18,2,1,0,");
  Serial.print(hour);
  Serial.print(":");
  Serial.print(minute);
  Serial.print(":");
  Serial.println(second);

Serial.print("Fa,10,185,3,2,1,0,");
  Serial.print(month);
  Serial.print("-");
  Serial.print(monthDay);
  Serial.print("-20");
  Serial.println(year);

Serial.print("Gm,14,128,242,20,");
  Serial.print(T_outstr);
  Serial.println(",1,0");
  
  Serial.print("Fa,32,128,102,2,1,0,");
  Serial.println(temp_f);

Serial.print("Gm,14,65,242,20,");
  Serial.print(H_outstr);
  Serial.println(",1,0");
  
  Serial.print("FA,32,128,39,2,1,0,");
  Serial.println(humidity);
  
  Serial.println("e");
    
}

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