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Thermocouple Mod

Hardware Components You’ll Need:

  1. Arduino Nano
  2. HW-550 Thermocouple (MAX6675) Module
  3. Jumper Wires
  4. USB Cable for Arduino Nano connection

Step 1: Installing the Arduino IDE

If you haven’t already installed the Arduino IDE, follow these steps:

  1. Download the Arduino IDE from the official Arduino website.
  2. Install the software on your computer, following the on-screen instructions for your operating system (Windows/macOS/Linux).
  3. Once installed, open the Arduino IDE.

Step 2: Installing the MAX6675 Library

To interface with the HW-550 (MAX6675) thermocouple, you will need the MAX6675 library.

  1. Open the Arduino IDE.
  2. Click on Sketch > Include Library > Manage Libraries.
  3. In the Library Manager window, type MAX6675 in the search box.
  4. Look for the library titled MAX6675 by Adafruit and click Install.
  5. Wait until the installation is complete.

Step 3: Wiring the HW-550 (MAX6675) to Arduino Nano

Hardware Setup

  1. Thermocouple Wiring (MAX6675):
    The code expects the following connections:

    • pinSCK = 10
    • pinCS = 11
    • pinSO = 12

    Additionally, pinGND = 8 and pinVCC = 9 are used as power pins for the thermocouple board. You’ll need to set these pins as outputs and connect them to the corresponding thermocouple module inputs (or power rails) as appropriate.

    Typical Wiring:

    • Arduino GND to MAX6675 GND
    • Arduino 5V (or 3.3V if required by the MAX6675 module) to MAX6675 VCC
    • Arduino pin 10 (SCK) to MAX6675 SCK
    • Arduino pin 11 (CS) to MAX6675 CS
    • Arduino pin 12 (SO) to MAX6675 SO

  2. Signal Lines for Roaster Control: The code uses txPin = 3 and rxPin = 2 for sending and receiving signals. Ensure these pins are connected as required to your roaster control interface.

  3. Double-Check Pin Assignments: Before uploading, confirm all pins and connections match your setup. If needed, adjust pin numbers in the code.

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