How to open Serial Monitor Arduino?

To open the Serial Monitor in the Arduino IDE, follow these simple steps:

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For Arduino IDE 2.x (latest versions)

1. Connect your Arduino board to your computer via USB.

2. Open the Arduino IDE 2.x.

3. Click the “Plug” icon on the left toolbar (🔌) to ensure your board is recognized.

4. Select the correct Port from the lower status bar (e.g., COM3, /dev/ttyUSB0, etc.).

5. Click the “Magnifying glass” icon 🔍 on the top right (or go to “View” > “Serial Monitor”).

6. The Serial Monitor window will open — you can now view incoming serial data.

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For Arduino IDE 1.x (classic versions)

1. Connect your Arduino board.

2. Open Arduino IDE 1.x.

3. Choose your board and port under:

   • Tools > Board

   • Tools > Port

4. Go to Tools > Serial Monitor, or press:

    nginx
   
    Ctrl + Shift + M
   

5. The Serial Monitor will pop up in a new window.

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Notes

• Baud Rate: Make sure it matches what’s in your code:

    cpp
  
    Serial.begin(9600); // Use 9600 in Serial Monitor
  

• You can send data back to the Arduino using the input box at the top.

• For Serial Plotter (graphing data): go to Tools > Serial Plotter