#define BLYNK_TEMPLATE_ID "TMPLx76oHv"
#define BLYNK_DEVICE_NAME "Temprator Freez 1"
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <WiFiManager.h>
#include "uptime.h"
#include <TridentTD_LineNotify.h>
#include <OneWire.h>
#include <DallasTemperature.h>
char auth[] = "qxOrvYVf-DRiZfSku02F8GcsZZXuxb";
char ssid[] = "ULTRA TECH1";
char pass[] = "qwerty123";
int lastConnectionAttempt = millis();
int connectionDelay = 5000; // اعادة اتصال كل 5 ثواني
#define LINE_TOKEN "oMPewQHyJ1D2inWdkh9uKMHEhgO6jwnZT7xj75Ew"
#define ONE_WIRE_BUS D5
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
#define vPIN_UPTIME V0
#define vPIN_Temp V1 // درجة الحرارة
#define vPIN_HighTemp V2 // الحد الاعلى للحرارة
#define vPIN_LogTerminal V3 // مسجل الاحداث
#define vPIN_LowTemp V4 // الحد الادنى للحرارة
#define vPIN_State V5 // الوضع التلقائي
#define vPIN_LedState V6 // ليد الوضع التلقائي
#define vPIN_LedAmper V7 // ليد حالة الكهرباء
const int Relay = D7; // رجل الريلي
const int Switsh1 = D0; // رجل تفعيل الوضع التلقائي يدويا
const int Switsh2 = D6; // رجل حالة الكهرباء
bool buttonStatus1 = 0;
bool buttonTemp1 = 0;
bool buttonStatus2 = 0;
bool buttonTemp2 = 0;
float HighTemp=0; // متغير الحد الاعلى للحرارة
float LowTemp=0; // متغير الحد الادنى للحرارة
int NotifyAmper=0;
int NotifyHighTemp=0; // متغير ايقاف الاشعار عند ارتفاع الفولت
int NotifyLowTemp=0; // متغير ايقاف الاشعار عند انخفاض الفولت
int CuntHigh=0; // عداد قبل ارسال اشعار عند ارتفاع الحرارة
int CuntLow=0; // عداد قبل ارسال اشعار عند عودة الحرارة للحد الطبيعي
int CuntUnplogedSensor=0; // عداد قبل ارسال اشعار عند توقف الحساس
int StateSensor=0; // لارسال الاشعار مرة واحدة عند توقف الحساس
bool IsFirstRun = 1;
bool State = 1; // متغير للوضع التلقائي
float tem = 0; // متغير تحويل قيمة الحرارة الى فلوت
BlynkTimer UltraTimer;
WidgetLED LedState(vPIN_LedState);
WidgetLED LedAmper(vPIN_LedAmper);
BLYNK_CONNECTED()
{
if (IsFirstRun==1)
{
Blynk.syncVirtual(vPIN_HighTemp,vPIN_LowTemp,vPIN_State);
LedAmper.off();
IsFirstRun=0;
}
}
BLYNK_WRITE(vPIN_HighTemp){
HighTemp=param.asFloat();
Blynk.virtualWrite(vPIN_LogTerminal,"تم تغيير الحد الأعلى لدرجة الحرارة"+String(HighTemp));
//LINE.notify("تم تغيير الحد الأعلى لدرجة الحرارة"+String(HighTemp));
}
BLYNK_WRITE(vPIN_LowTemp){
LowTemp=param.asFloat();
Blynk.virtualWrite(vPIN_LogTerminal,"تم تغيير الحد الطبيعي لدرجة الحرارة"+String(LowTemp));
//LINE.notify("تم تغيير الحد الطبيعي لدرجة الحرارة"+String(LowTemp));
}
BLYNK_WRITE(vPIN_State)
{
if (param.asInt() == 1)
{
LedState.on();
Serial.println("تم تفعيل وضع التنبيه");
State=1;
Serial.print("State : ");
Serial.println(State);
}
else
{
digitalWrite(Relay, HIGH);
LedState.off();
Serial.println("تم ايقاف وضع التنبيه");
State=0;
Serial.print("State : ");
Serial.println(State);
}
}
void checkStatusButton1()
{
buttonStatus1 = digitalRead(Switsh1);
if (buttonStatus1 != buttonTemp1)
{
if (buttonStatus1 == HIGH) {
Blynk.virtualWrite(V5, 1);
LedState.on();
State=1;
Serial.print("State : ");
Serial.println(State);
Serial.println("تم تشغيل وضع التنبيه يدويا");
}
else {
digitalWrite(Relay, HIGH);
Blynk.virtualWrite(V5, 0);
LedState.off();
State=0;
Serial.print("State : ");
Serial.println(State);
Serial.println("تم ايقاف وضع التنبيه يدويا");
}
buttonTemp1 = buttonStatus1;
}
}
void checkStatusButton2()
{
buttonStatus2 = digitalRead(Switsh2);
if (buttonStatus2 != buttonTemp2)
{
if (buttonStatus2 == HIGH) {
digitalWrite(Relay, HIGH);
LedAmper.on();
Serial.println("الكهرباء متوفرة");
LINE.notify("الكهرباء متوفرة");
}
else {
digitalWrite(Relay, LOW);
LedAmper.off();
Serial.println("الكهرباء غير متوفرة");
LINE.notify("الكهرباء غير متوفرة");
}
buttonTemp2 = buttonStatus2;
}
}
void UPTIME(){
uptime::calculateUptime();
Serial.println(" "+String(uptime::getDays())+" days "+String(uptime::getHours())+":"+String(uptime::getMinutes())+":"+String(uptime::getSeconds()));
Serial.print("\n");
Blynk.virtualWrite(vPIN_UPTIME," "+String(uptime::getDays())+" days "+String(uptime::getHours())+":"+String(uptime::getMinutes())+":"+String(uptime::getSeconds()));
}
void temprator(){
sensors.requestTemperatures();
Serial.print("Temperature is: ");
Serial.println(sensors.getTempCByIndex(0));
tem=sensors.getTempCByIndex(0) ;
Blynk.virtualWrite(vPIN_Temp,tem);
Serial.print("NotifyHighTemp: ");
Serial.println(NotifyHighTemp);
Serial.print("NotifyLowTemp: ");
Serial.println(NotifyLowTemp);
}
void highTemp(){
if ((tem>HighTemp)and(NotifyHighTemp==0)and(State==1)and(CuntHigh<20)){
CuntHigh++;
delay(250);
}
if ((tem>HighTemp)and(NotifyHighTemp==0)and(State==1)and(CuntHigh==20)){
// Blynk.logEvent("TempRator", "درجة الحرارة أعلى من الحد الطبيعي ");
Blynk.virtualWrite(vPIN_LogTerminal,"درجة الحرارة أعلى من الحد الطبيعي");
Serial.println("تم تشغيل الانذار");
LINE.notify("درجة الحرارة أعلى من الحد الطبيعي "+String(tem));
digitalWrite(Relay,LOW);
NotifyHighTemp=1;
NotifyLowTemp=0;
CuntLow=0;
StateSensor=1;
}
if ((tem<HighTemp)and(NotifyHighTemp==1)and(State==1))
{
digitalWrite(Relay,HIGH);
NotifyHighTemp=0;
CuntHigh=0;
StateSensor=1;
}
}
void lowTemp(){
if ((tem<LowTemp)and(tem> 0)and(NotifyLowTemp==0)and(State==1)and(CuntLow<20)){
CuntLow++;
delay(250);
}
if ((tem<LowTemp)and(tem> 0)and(NotifyLowTemp==0)and(State==1)and(CuntLow==20)){
//Blynk.logEvent("TempRator", "درجة الحرارة الآن ضمن الحد الطبيعي");
Blynk.virtualWrite(vPIN_LogTerminal,"درجة الحرارة الآن ضمن الحد الطبيعي");
Serial.println("درجة الحرارة الآن ضمن الحد الطبيعي");
LINE.notify("درجة الحرارة الآن ضمن الحد الطبيعي"+String(tem));
NotifyLowTemp=1;
StateSensor=1;
}
}
void UnplogedSensor(){
if ((tem== -127)and(CuntUnplogedSensor<5)and(StateSensor==0)){
CuntUnplogedSensor++;
delay(250);
}
if ((tem== -127)and(CuntUnplogedSensor==5)and(StateSensor==0)){
Serial.print("يوجد عطل في حساس الحرارة");
LINE.notify("يوجد عطل في حساس الحرارة");
Serial.print(StateSensor);
Serial.print("CuntUnplogedSensor");
Serial.print(CuntUnplogedSensor);
StateSensor=1;
}
if ((tem>1)and(StateSensor==1)){
StateSensor=0;
}
}
void setup()
{
Serial.begin(115200);
pinMode(Relay,OUTPUT);
pinMode(Switsh1, INPUT);
pinMode(Switsh2, INPUT);
digitalWrite(Relay,HIGH);
Blynk.begin(auth, ssid, pass);
LINE.setToken(LINE_TOKEN);
sensors.begin();
IsFirstRun = 1 ;
UltraTimer.setInterval(1000L, UPTIME);
UltraTimer.setInterval(1000L, highTemp);
UltraTimer.setInterval(1000L, lowTemp);
UltraTimer.setInterval(1000L, temprator);
UltraTimer.setInterval(50000L, UnplogedSensor);
UltraTimer.setInterval(1000L, checkStatusButton1);
UltraTimer.setInterval(1000L, checkStatusButton2);
}
void loop()
{
Blynk.run();
UltraTimer.run();
if (WiFi.status() != WL_CONNECTED)
{
if (millis() - lastConnectionAttempt >= connectionDelay)
{
lastConnectionAttempt = millis();
if (pass && strlen(pass))
{
WiFi.begin((char*)ssid, (char*)pass);
}
else
{
WiFi.begin((char*)ssid);
}
}
}
else
{
Blynk.run();
}
}
Your sketch should look like this :
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
char auth[] = "";
/* WiFi credentials */
char ssid[] = "";
char pass[] = "";
SimpleTimer timer;
#define ONE_WIRE_BUS 2 // DS18B20 on arduino pin2 corresponds to D4 on physical board "D4 pin on the ndoemcu Module"
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);
float temp;
float Fahrenheit=0;
void getdata()
{
DS18B20.requestTemperatures();
temp = DS18B20.getTempCByIndex(0); // Celcius
Fahrenheit = DS18B20.toFahrenheit(temp); // Fahrenheit
Serial.println(temp);
Serial.println(Fahrenheit);
Blynk.virtualWrite(V3, temp); //virtual pin V3
Blynk.virtualWrite(V4, Fahrenheit); //virtual pin V4
}
void setup()
{
Serial.begin(115200);
Blynk.begin(auth, ssid, pass);
DS18B20.begin();
timer.setInterval(1000L, getdata);
}
void loop()
{
timer.run(); // Initiates SimpleTimer
Blynk.run();
}
This is my code it works fine but there is a difference of 4 degrees
By the way, there’s some mistakes in your sketch for example there’s 2 blynk.run in your void loop.
Thank you, I know, but it is not the cause of the temperature difference
Can you try the sketch I just sent you please ?
Well, I will give it a try
Thank you
thank you my friend
1 Like
How do you know this? What type of device are you using to measure the temperature, and how accurate is it, and when was it last calibrated?
Standard ds18b20 sensors have a ±0.5°C accuracy, but this can be 0.1°C for the clinical version of the sensor.
However, I think you’re confusing accuracy with calibrated accuracy.
If you have a reference thermometer which you know to be accurate then you can introduce a calibration factor into your sketch to ensure that the ds18b20 gives the same results as the reference thermometer. The ds18b20‘s calibrated readings should then be accurate to within half a degree of the reference thermometer.
Pete.
Thank you Pete, I knew the temperature difference compared to the air conditioner in the cold room
Do you mean that I reduce the excess difference by means of a variable? I did that and when the room temperature changed, the match was different. Unfortunately, I tried several ds18b20 sensors, but the same result
Is that a regular domestic AC unit?
If so then they are VERY inaccurate, and have a very wide hysteresis setting (the temperature at when the AC kicks in and out) so that they aren’t constantly switching the compressor on/off.
Yes
Probably because the temperature in the room is varying massively, due to the intentional insensitivity of the AC unit
You’re wasting your time unless you have a calibrated reference thermometer.
Pete.
It is a unit manufactured with international standards made in Turkey, not a local manufacture dedicated to preserving the corona vaccine
Do you trust ds18b20 sensor? Give me advice
I don’t really understand what you’re saying here.
As I said before…
Pete.
I mean, the refrigeration unit is equipped with a high-precision temperature sensor. The cooling unit is designed to save the corona vaccine. I don’t think there could be a mistake in its temperature sensor. It’s very accurate
Where is the DS18B20 physically, relative to the reefer temperature sensor? In addition, since you are monitoring a temperature that is controlled to be fixed, you could use an offset if nothing else works. Then the issue is what is the variation on the 18B20 with time? Calling it too often will raise its temperature as well.
1 Like
Hi,
I wonder the last situation. How did you solved the problem? I have a similar situation here with NodeMCU. I have connected Ds18b20 but, in room temperature i read 73 Celcius. Actually, beside this, i am trying to learn out of range notification settings “in coding” with Blynk.
Post your sketch so we can take a look at it.
Read this