This project involves using the Arduino Nano 33 BLE Sense to implement a simple state machine. Each state in the state machine is associated with a unique color displayed on the inbuilt RGB LED. The RGB LED is connected to pins 22, 23, and 24. The state machine transitions between states using a push-button mechanism, which can be either an external hardware switch or a software-implemented soft switch.

• Arduino Nano 33 BLE Sense
• RGB LED (built-in, connected to pins 22, 23, and 24)
• Push Button (external hardware switch or software-implemented soft switch)

• Implementation of a state machine with unique colors for each state.
• Use of the inbuilt RGB LED for state indication.
• Push-button mechanism to control state transitions.

1. Arduino Nano 33 BLE Sense: Ensure that you have the board and necessary cables.
2. Push Button (optional): If using an external switch, you will need a push button and necessary wiring components.

• Arduino IDE: Download and install the latest version from the Arduino website.
• ArduinoBLE Library: Install this library via the Library Manager in the Arduino IDE.

If using an external push button:

1. Connect one leg of the push button to a digital I/O pin on the Arduino Nano 33 BLE Sense.
2. Connect the other leg of the push button to the ground (GND).

1. Open the Arduino IDE.
2. Install necessary libraries if not already installed.
3. Copy and paste the provided code into a new Arduino sketch.
4. Adjust pin definitions and other parameters as necessary.
5. Upload the sketch to the Arduino Nano 33 BLE Sense.

1. Initial State: When the Arduino Nano 33 BLE Sense is powered on, it will start in the initial state, indicated by a specific color on the RGB LED.
2. State Transitions: Pressing the push button (or activating the soft switch) will transition the state machine to the next state. Each state will be indicated by a different color on the RGB LED.

For a visual demonstration of this project, please refer to the video linked below:

Project Video Demonstration

• Ensure the Arduino Nano 33 BLE Sense is properly connected to your computer.
• Verify the correct board and port are selected in the Arduino IDE.
• The push button should be debounced to avoid multiple state transitions due to noise.

• If the RGB LED does not light up, check the connections to pins 22, 23, and 24.
• Ensure the push button is connected correctly and functioning.
• Use the Serial Monitor for debugging if needed.

By following this guide, you should be able to successfully implement and run a simple state machine using the Arduino Nano 33 BLE Sense and its built-in RGB LED.