Why I sleep better at night with Freedom Robotics


Sleeping is difficult to achieve. Sometimes I wake up with a headache and sore muscles, sometimes I wake up with a stuffy nose, sometimes with dry skin, and other times I wake up feeling great.

Why don't I feel good every morning? As an engineer, I decided to get to the bottom of it using data and science.

Create a device to collect data

Research has exposed that the quality of indoor air plays an important role in the quality of your sleep. With that in mind, my first step was to measure the air quality in my bedroom.

I started by connecting a FeatherS2 microcontroller to almost every air sensor I could find: pressure sensors, temperature sensors, humidity sensors, electrochemical sensors, ozone sensors, infrared CO2 sensors and particle and dust collectors.

I even included a Geiger counter in case a truck carrying radioactive material passed my house.

Fortunately, every sensor I compiled used the I2C communication protocol, so connecting them was relatively straightforward, just like housing them in a 3D printed cabinet. My air quality monitor was finished. Its construction took a few hours of my time and around $ 120.

My complete DIY air quality monitor

Once I have collected the data, how can I save and analyze it?

Next, I had to figure out how to save and analyze the monitor data.

Enter the Streaming tab of Freedom Robotics - the first tool we all know and love for its ability to record, replay and broadcast robot sensor data!

Although it was designed for robots, I knew it would provide the perfect user interface and experience for recording and examining arbitrary sensors collected from Internet of Things (IoT) devices like my air quality monitor. To support future work like this, we created MicroLink, a library for publishing data from microcontrollers running on CircuitPython or MicroPython.

Indoor carbon dioxide levels

The air quality monitor paid for itself after just one night of data collection. As high CO2 levels are known to negatively affect sleep quality, I was surprised to find my bedroom measured over 1200 ppm, easily exceeding the 1000 ppm threshold, which is known to induce drowsiness, headaches and other damaging symptoms. to sleep.

 

My solution? Open my bedroom window at night and watch the CO2 levels drop. But how wide do I need to open each night to maintain optimal levels without sacrificing heat? A few days of experimentation gave me my answer.

I also learned how quickly the CO2 levels drop when I open the windows during the working day. Here at 2:42 p.m., you can see the levels drop from over 900 ppm to just under 700 ppm in about 8 minutes. Every time I did this I felt refreshed, alert, and productive.

Are humidifiers working? If so, are they reliable?

Another problem I was looking to solve was waking up thirsty with dry skin. Also, the plants in my room weren't doing well and tended to dry out quite quickly.

I had recently purchased a humidifier to deal with my dryness issues, but was it working? Two sensors on my air quality monitor indicated yes.

The periodic behavior detailed in the reading below is due to the fact that the humidifier regularly turns off according to its set point and shortly after 10 hours it runs out of water. When these cases happened, humidity levels began to drop to their natural dry levels.

I also found that the humidity levels in my room reported by the humidifier were nowhere near what my air quality monitor was reporting.

When the humidifier reported 57 percent, the actual levels were between 35 and 40 percent. You would think this was due to improperly calibrated sensors, but the gap was actually caused by the humidifier sitting in a puddle of its own mist.

  bloggerelle  entertainmentweeklyupdates   countrylivingblog  theallureblog  technoratiblog

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