The Arduino Nano Ajustable Thermostatic Relay Project

1/*--------------------------------------------------------------
2  Program:      Ajustable Thermostatic Sensor / Relay MCU
3
4  Designed for: AIoT Consulting
5
6  Version:      v2
7
8  Description:  This C++ code works on the ATmega328P microprocessor in conjunction with a DS18B20 Waterproof Temperature Sensor and a TM1637 Display.
9                There is some intelligence built into the program which triggers a single N/C relay  should sensors supply data outside nominal
10                operating parameters determined by Rotary Encoder. 
11                
12                
13  Hardware:     - Arduino Nano Microcontoller
14                - DS18B20 Waterproof Temperature Sensor
15                - TM1637 (7) Segment (4) LED Display Board
16                - EC11B Rotary Encoder with momentary push button switch
17                - 2 position toggle switch
18                - breadboard and/or Project Case
19                - Various Connectors and wires
20
21
22  Software:     Developed using 2.1.0 IDE software
23
24  Date:         2 August, 2023
25
26  Author:       Richard Inniss, http://aiotconsulting.com
27  --------------------------------------------------------------*/
28
29/********************/
30/*** HEAD SECTION ***/
31/********************/
32
33// Include all required libraries
34#include <OneWire.h>                                        // Needed for DS18B20 Temperature probe
35#include <DallasTemperature.h>                              // Needed for DS18B20 Temperature probe
36#include <TM1637TinyDisplay.h>                              // Library needed for the TMP1637 7 segment LED display
37
38// Set values to our named constants
39#define ONE_WIRE_BUS 8
40
41// Create our objects to access the methods in each of one of our libraries
42OneWire myWire(ONE_WIRE_BUS);
43DallasTemperature sensors(&myWire);
44TM1637TinyDisplay display(6, 7);
45
46// Declare our global variables
47float tempCelcius = 0.0;
48
49
50/*********************/
51/*** SETUP SECTION ***/
52/*********************/
53
54void setup()
55{
56  pinMode(6, OUTPUT);                                       // This is for the CLK Pin of the TM1637 LED Display
57  pinMode(7, OUTPUT);                                       // This is for the DIO Pin of the TN1637 LED Display
58  pinMode(8, INPUT);                                        // This is for our DS18B20 Temperature Probe
59  Serial.begin(9600);                                       // This will enable the serial monitor of our IDE 
60  sensors.begin();                                          // This will enable our DallasTemperature object called sensors
61  display.begin();
62  display.setBrightness(7,true);
63}
64
65/********************/
66/*** LOOP SECTION ***/
67/********************/
68
69void loop()
70{
71  // First thing we want to do is get the temperature from the probe
72  sensors.requestTemperatures();
73  tempCelcius = sensors.getTempCByIndex(0);
74
75  // Second thing we want to do is display the current temperature from the probe on our small LCD
76  display.showNumber(tempCelcius, 1, 3, 0); 
77  display.showString("\xB0", 1, 3);
78  
79}