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Lab 1 (Due 2/4/2025)

1. Prelab

  • Setup: To set up my laptop for Lab 1, I updated the ArduinoIDE, python, pip, and Ruby/Jekyll, installed the Sparkfun Apollo3 Boards Manager along with its BLE functionality in ArduinoBLE, downloaded the provided BLE codebase, configured a Python virtual environment for the class with the necessary Python packages, and started the necessary Jupyter server.
  • Codebase: The provided BLE (Bluetooth Low Energy) codebase allows wireless communication between my laptop and the RedBoard Artemis Nano. After establishing a Bluetooth connection to the Artemis, the functions in the Jupyter Notebook titled 'demo.ipynb' allow us to interface with the program that the Artemis runs. The Artemis runs 'ble_arduino.ino', which contains the RobotCommand class used to parse and execute incoming commands from my laptop via the established BLE wireless connection.

2. Lab Tasks

  • Configurations: The most relevant configurations in Lab 1 were the updated MAC Address and UUID for connecting to the Artemis, which I have copied below.
    MAC Address: C0:81:48:26:03:64
    UUID: e2402ec7-6475-4e44-8a84-14f5f0a2714a

Lab 1A: Running Examples

(Links can be clicked while embedded elements are being fixed.)

  • Blink (Video) In this task, I ran the Blink example program available for the board in the Arduino IDE after installing the appropriate boards manager to blink the on-board LED once per second (ie. LED on for one second, then off for the next, on for the next, and so on and so forth).

Blink Example

  • Serial (Image) In this task, I ran the Serial example program from the Arduino IDE, which echoes input into the Serial Monitor (set to a baud rate of 115200), as shown in the image below. \

  • Temperature Sensor (Video) In this task, I ran the analogRead example program to test the on-board temperature sensor. This program outputs the value reported by the temperature sensor to the Serial Monitor.

Temperature Sensor Example

  • Microphone Output (Video) In this task, I ran the Microphone Output example program to test the on-board microphone. This program outputs the loudest frequency observed to the Serial Monitor.

Microphone Output Example

Lab 1B: Ensuring Communication Ability w/RedBoard Artemis Nano

  • Task 1: Echo Command In this task, I used the provided ECHO command in the ble_arduino.ino sketch to echo a phrase from the RedBoard Artemis Nano over the established Bluetooth connection.

Implementation of Echo Command

Using the Echo Command

  • Task 2: Send Three Floats Command In this task, I used the provided SEND_THREE_FLOATS command in the ble_arduino.ino sketch to send three floats to the board and extracted them in the same Arduino sketch.

Implementing the Send Three Floats Command

Using the Send Three Floats Command

Output of Send Three Floats Command

  • Task 3: Get Time Command In this task, I added a command to the ble_arduino.ino sketch that would allow the RedBoard Artemis Nano to return the time elapsed since the beginning of the program in milliseconds. This functionality is demonstrated below.

Implementing the Get Time Millis Command

Using the Get Time Millis Command

Output of the Get Time Millis Command

  • Task 4: Notification Handler In this task, I created a notification handler in the demo notebook (Jupyter Notebook) that would extract data from the RX string.

Implementing the Notification Handler

  • Task 5: Loop of Current Time In this task, I created a loop to send/receive time data so that the speed of data transfer could be measured.

Implementing the Sending Command

Implementing the Loop

  • Task 6: Array of Time Stamps In this task, I create an array of timestamps that is populated by the Send Time Data command to achieve the previous goal in a different way.

Implementing the Send Time Data Command

Using the Send Time Data Command

  • Task 7: Temperature Readings at Each Time Stamp In this task, I implement the Get Temp Readings command to store the output from the temperature sensor for each timestamp recorded in the loop (Task 5).

Implementing the Get Temp Readings Command

Using the Get Temp Readings Command

  • Task 8: Differences Between Methods

3. Discussion

In this lab, I became familiar with using the sensors of the RedBoard Artemis Nano and receiving data using each of its sensors. The platform is not very intuitive, but with instruction, I seem to have properly configured the board without very many challenges. To complete this lab, I also referenced Nila Narayan's & Mikayla Lahr's websites from the 2024 offering of this course to speed up debugging my code.