Student Assignment 2024:

My embedded system uses both digital and analogue inputs to enhance the user's sleep quality by collecting data throughout the duration of the user's sleep. This data gathered from the embedded system is then validated and stored on a CSV file. On python, my analysis component calculates the night's sleep quality and provides advice based on collected data to enhance future sleep experiences.

Analogue Inputs:

Digital Inputs:

My data gathered from the embedded system is then stored on a CSV file. To validate this data I used the " average" function on the excel spreadsheet to calculate the mean light level and temperature. I then used the "max" function to get the final count of movements, screen time, snores and time slept.

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Week 1:

• Researched the topic of health and well-being, exploring the different factors influencing it.
• After conducting a survey around my class, I found sleep to be the aspect of wellbeing people struggle with the most.
• Decided on the idea of using my embedded system to improve sleep quality.

Week 2:

• Decided that my embedded system would gather data from the inputs: light level, temperature, screen time, snore count, movement count and time slept as these were the factors I found to affect sleep quality the most.
• When I started coding I realised that using an LCD display to show my data was unnecessary.

Week 3:

• Started coding the micro:bit's startup sequence.
• I created a function to show a graphic on the LED display indicating that the program had started.
• Utilised "serial redirect to USB" to enable transmission of light and temperature data to the computer for storage.
• I created a while loop that starts when the user presses the "A" button. In this loop every 10 minutes each input is written and stored on the computer.
• I tested this code to make sure it was functioning properly.
• Encountered an issue where the loop continuously ran after pressing "A", I added a "Sleep Mode" variable set to 0 initially. Upon pressing "A", this variable switches to 1, allowing the loop to run.
• Created a conditional statement to break the loop when "Sleep Mode" equals 0, stopping the program upon pressing the "B" button.

Week 4:

• Wrote the code to count the user's screen time throughout the night.
• When the microbit detects a "screen up" gesture it changes the value of the screen time count (in seconds) by 1 every second. When the microbit detects a "screen down" gesture the code stops adding to the screen time count.
• I ran into an issue with the timing of the code. To resolve this issue, I made this code update the variable "screen time" every "150ms" ("1000ms" was too long).

Week 5:

• I began writing the code for the snore count.
• I had it change the value of the "snore count" variable by a value of 1 every time a loud sound is detected by the microbit.
• I decided to run a test on my microbit to make sure everything was functioning correctly before moving on.
• From my test, I ran into an issue with the light level as whenever the phone was picked up by the user, the light sensor was blocked causing readings with the value of "0" to be detected for prolonged periods of time.
• To address this problem, I changed the orientation at which the microbit had to be positioned to record the light level.

Week 6:

• I wrote the code on the second microbit to record the movement count of the user throughout the night
• After testing this code I ran into an issue - Movement count wasn't accurate.
• To solve this problem I wrote a piece of code to update the initial position of the microbit every time it moved.
• Wrote code to prompt the main microbit over radio signals to update the movement count everytime movement was detected.

Week 7:

• I wrote the code that ends the collection of data.
• Created code to prompt the user to enter the amount of time they slept for.

Week 8:

• Cleaned the collected data on the CSV file with "average" and "max" functions.
• Tested the micro:bit code to ensure everything was functioning properly.

Week 9:

• Once the data was cleaned, I wrote the code to import the data from the CSV file onto python.
• I tested and fixed this code. A problem occurred because I didn't include the "r" which allows the program to read the backslashes in the file path.
• I then wrote the code to calculate the sleep quality score out of 10.
• To calculate this score I went through each input (Movements, Snores, Screen Time and Time Slept) and used a series of "if" and "elif" statements to determine whether the users score lay above or below the average. In each case a score would be determined and at the end of the code, a final sleep quality score out of 10 would be calculated and displayed.

Week 10:

• I wrote code for the analysis component.
• If the user's calculated sleep quality score was above or below certain thresholds, through a series of "if" and "elif" statements, selected advice would be displayed to inform future decisions.
• Wrote the code to provide specific guidance depending on whether the average light level and temperature exceeded or fell short of the recommended thresholds.
• Created code to provide further analysis on the factors affecting sleep quality.
• Tested and fixed this code - "if" statements were not indented properly.

Week 11:

• Wrote python code for What if question: What if the temperature increased?
• Wrote python code for What If question: what if the screen time is greater than 10 minutes?
• Began writing code for the HTML website brief.

Week 12:

• Tested my microbit code - everything functioned properly.
• Tested my python code - everything functioned properly.
• Finished writing code for HTML website.

This is the content of MtB.

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