Arduino - Oven Thermometer

20 Dec 2020

Parts:

HiLetgo DC 3-5V MAX6675 Module + K Type Thermocouple Temperature Sensor
UCTRONICS 0.96 Inch OLED Module 12864 128x64 Yellow Blue SSD1306 Driver I2C
ESP32

Code:

// based on the lcdthermocouple example // also: // https://randomnerdtutorials.com/esp32-ssd1306-oled-display-arduino-ide/ // http://www.esp32learning.com/code/esp32-and-max6675-example.php // parts: // * HiLetgo DC 3-5V MAX6675 Module + K Type Thermocouple Temperature Sensor // * UCTRONICS 0.96 Inch OLED Module 12864 128x64 Yellow Blue SSD1306 Driver I2C // * ESP32 #include <max6675.h> #include <Wire.h> // also requires Adafruit Bus IO Library #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h> #define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_HEIGHT 64 // OLED display height, in pixels int thermoDO = 19; // SO int thermoCS = 23; int thermoCLK = 5; // SCK MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO); // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1); void setup() { Serial.begin(9600); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64 Serial.println(F("SSD1306 allocation failed")); for(;;); } delay(2000); } void loop() { display.clearDisplay(); display.setTextSize(1); display.setTextColor(WHITE); display.setCursor(0, 1); display.println("Paul's Thermometer"); display.setTextSize(5); display.setTextColor(WHITE); display.setCursor(0, 20); display.print((int) thermocouple.readFahrenheit()); display.println("F"); display.display(); delay(200); }