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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 (MAX6675) Connections: The code sets these pins:

    • pinSCK = 7
    • pinCS = 6
    • pinSO = 5

    Wire your MAX6675 module as follows:

    • Arduino 5V to MAX6675 VCC
    • Arduino GND to MAX6675 GND
    • Arduino 7 (SCK) to MAX6675 SCK
    • Arduino 6 (CS) to MAX6675 CS
    • Arduino 5 (SO) to MAX6675 SO

    Note: If your MAX6675 module specifies different power requirements or has a regulator onboard, ensure you follow its recommended wiring.

  2. Roaster Control Lines:

    • txPin = 3 (Arduino output)
    • rxPin = 2 (Arduino input)

    Connect these pins to your roaster's control interface as required. These pins are used for sending and receiving signals from the roaster.

  3. Power and Grounding: Ensure all grounds (Arduino, MAX6675, roaster interface) share a common ground. Double-check all connections to avoid damage to the board or sensors.

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