This project involves the construction of a barometric door sensor using basic electrical components such as Particle Argon development boards, an M38 Magnetic Reed Switch, a BMP 280 Barometric Pressure and Altitude Sensor, jumper wires, half-size solderless breadboards, and a digital temperature sensor. This barometric door sensor is a look into just how much the pressure inside a room can change when a door that is initially closed opens. This could be useful in terms of seeking to check for any room pressure imbalances, as they can definitely have a negative effect on a person as well as his or her home. What makes our project stand out from the rest is our incorporation of simple but effective electrical components to show a particular change in pressure that is able to be quantified. Our newly acquired IOT skills enable us to bring our project to life due to the fact that we learned to code for the project and understand the importance of communication between our devices. Below are pictures as well as a Youtube video of the system to illustrate how the components are connected as well as operation. Although not covered in the video, our project produced graphs of the change in temperature, pressure, and altitude. We also arranged for the temperature of the situation to be recorded. Although it was not our focus, we chose to include the graphs of the change in temperature as well as altitude to showcase the vast capabilities of our sensors.
Argon #1 (BMP 280 Pressure and Altitude Sensor)
Argon #1 is equipped with a BMP 280 Barometric Pressure and Altitude sensor. The sensor measures the change in pressure when the door opens and closes. This is an essential part of the overall project. Additionally, it communicates with the M38 Magnetic Reed Switch that is found on Argon #2 to determine when to observe the change in pressure in terms of the door being opened or closed.
Argon #2 (M38 Magnetic Reed Switch)
For Argon #2, an M38 Magnetic Reed Switch is applied. This is responsible for relaying when the door is open or closed. It also works in conjunction with the BMP 280 sensor as well as the digital temp sensor. When the door is opened, the BMP 280 and the digital temp sensor are prompted to take readings thanks to the operation of the reed switch. The reed switch communicates with the BMP 280 sensor and the digital temp sensor.
Argon #3 (Digital Temperature Sensor)
Argon #3 includes the digital temperature sensor found in the 37 in 1 sensor kit that was available for purchase for this class. This argon is responsible for recording the temperature during operation. Additionally, it is our source of documenting the temperature change as an add-on, as it is not our main focus.
Barometric Pressure vs. Time
Temperature vs. Time (Note: This was not the main focus of our project, but we took a "when in Rome" approach)
Altitude vs. Time (Treated as an additional feature of the BMP 280 sensor)