Published August 31, 2022

Temperature Monitor

Do you wonder how many hours the temperature is higher than 30 degree in one day? We designed a temperature monitor to do this!

BeginnerShowcase (no instructions)1 hour153

Things used in this project

Hardware components

Seeed Studio SenseCAP K1100 - The Sensor Prototype Kit with LoRa® and AI

Software apps and online services

Arduino IDE

Story

Why this project?

The temperature is constantly changing. I wonder how many times in a day it will be above 30 degrees. When it is higher than 30 degrees, you might avoid going out. If you need to go out, you can also remind to make different preparations according to the temperature.

Project Introduction

This device recognizes the outside temperature through the temperature and humidity sensor. When the temperature is lower than 30 degrees, a blue picture will be displayed, indicating that it is in a comfortable state. When the temperature is higher than 30 degrees, a red picture will be displayed, indicating that the weather is very hot.

Process and steps

1. Select correct hardware configuration;2. Code programming and burning;3. Function verification.

temp monitor

#include <Arduino.h>
#include <SensirionI2CSht4x.h>
#include <Wire.h>

SensirionI2CSht4x sht4x;
//LCD
#include"TFT_eSPI.h"
#include "Seeed_FS.h" //Including SD card library
#include"RawImage.h"  //Including image processing libraryTFT_eSPI tft;

//
#include"TFT_eSPI.h"
#include"Free_Fonts.h" //include the header file
TFT_eSPI tft;

void setup() {

  Serial.begin(115200);
//  while (!Serial) {
//  delay(100);
////
//  
////  tft.fillScreen(TFT_BLACK); //Black background
//  }
  tft.begin();
  tft.setRotation(3);
  Wire.begin();

  uint16_t error;
  char errorMessage[256];

  sht4x.begin(Wire);

  uint32_t serialNumber;
  error = sht4x.serialNumber(serialNumber);
  if (error) {
    Serial.print("Error trying to execute serialNumber(): ");
    errorToString(error, errorMessage, 256);
    Serial.println(errorMessage);
  } else {
    Serial.print("Serial Number: ");
    Serial.println(serialNumber);
  }

  if (!SD.begin(SDCARD_SS_PIN, SDCARD_SPI)) {
    while (1);
  }
  tft.begin();
  tft.setRotation(3);

  
}

void loop() {
  uint16_t error;
  char errorMessage[256];

  delay(1000);

  float temperature;
  float humidity;
  error = sht4x.measureHighPrecision(temperature, humidity);
  if (error) {
    Serial.print("Error trying to execute measureHighPrecision(): ");
    errorToString(error, errorMessage, 256);
    Serial.println(errorMessage);
  } else {
    Serial.print("Temperature:");
    Serial.print(temperature);
    Serial.print("\t");
    Serial.print("Humidity:");
    Serial.println(humidity);
  }

  if(temperature < 30){
    Serial.println("");
     drawImage<uint16_t>("shidu1.0.bmp", 0, 0); //Display this 8-bit image in sd card from (0, 0)
     delay(1000);
    }else{
  drawImage<uint16_t>("re1.0.bmp", 0, 0); //Display this 8-bit image in sd card from (0, 0)
  delay(1000);
  Serial.println("");
}
}

  
//  drawImage<uint16_t>("shidu1.0.bmp", 0, 0); //Display this 8-bit image in sd card from (0, 0)
//  delay(1000);
//  
/*
  tft.setFreeFont(&FreeSansBoldOblique9pt7b); //select Free, Sans, Bold, Oblique, 12pt.
  tft.drawString("TEMP",0,210);//prints string at (70,80)
  tft.setFreeFont(FF10); //select Free, Mono, Oblique, 12pt.
  
  char sensorValue2[2];
  sprintf(sensorValue2, "%s", humidity);
  tft.drawString(sensorValue2,50,210);//prints string at (70,110)
 // tft.setFreeFont(&FreeSansBoldOblique12pt7b); //select Free, Sans, Bold, Oblique, 12pt.
 // tft.drawString(sensorValue2, 230, 200);
  //*/