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--- iothings:proiecte:2023:solar_powered_weather_station_with_esp32 [2024/01/15 00:37]
tudorel.tibrea [Hardware Description]
+++ iothings:proiecte:2023:solar_powered_weather_station_with_esp32 [2024/01/15 14:13] (current)
tudorel.tibrea [Solar powered weather station with ESP32]
@@ Line 4: / Line 4: @@
   * Master: ACES
   * Academic year: 2023-2024
-  * Source code:
+  * Source code:[[https://gitlab.cs.pub.ro/tudorel.tibrea/iot/-/tree/main]]
+  * Demo + presentation: [[https://drive.google.com/drive/folders/1EvvDwn7LklOQQSkhjKmbFAPYsgpyLujw]]
 ===Project Description===
 This project aims to design and build a truly autonomous weather station by leveraging solar energy harvesting. The weather station will monitor the temperature, the humidity, the atmospheric pressure and the state of charge of the Li-Po battery. The project will use MQTT communication protocol with ESP32 to publish messages and subscripe to topics, making the data accessible for various applications.
@@ Line 19: / Line 20: @@
-**The following electric schematic represents the project’s hardware.** \\
+**//The following electric schematic represents the project’s hardware//**\\
 {{:iothings:proiecte:2023:schematic.png?800|}}
-**The prototyping board can be seen bellow.** \\
+**//The prototyping board can be seen bellow//**\\
 {{:iothings:proiecte:2023:breadboard.jpg?800|}}
 ======Software Description======
-The code flowchart can be seen bellow
+//**The code flowchart can be seen bellow**//
 {{:iothings:proiecte:2023:solarweatherstationflowchart.jpg?200|}}
@@ Line 216: / Line 217: @@
 ======Results======
 {{:iothings:proiecte:2023:results12345.png?800|}}
+Above we can see a prolonged use time with a lot of data entry points.*
+{{:iothings:proiecte:2023:exemplu2.png?800|}}
+As you can see, the ADC reading for the battery are not that precise. We can think of at least 2 culprits in this case. First would be the ESP32 ADC's poor performance and the second one, the method chosen; because the ESP wakes from deep sleep, the energy draw increases very drastically and the battery voltage might vary.*
+*For data visualization and plotting, **MQTT Explore** was used.
 ======Conclusion======
-In conclusion, the proposed solution demonstrates how an ESP32, combined with a BME280 sensor, can be used to create a power-efficient, wireless weather station capable of continuously monitoring environmental conditions and transmitting the data in real-time via Wi-Fi and MQTT, showcasing the potential of IoT in remote sensing and data communication.
+In conclusion, the proposed solution demonstrates how an ESP32, combined with a BME280 sensor, can be used to create a power-efficient, wireless weather station capable of continuously monitoring environmental conditions and transmitting the data in real-time via Wi-Fi and MQTT, showcasing the potential of IoT in remote sensing and data communication. Further improvements will be to find a way to get precise and constant readings of the battery state of charge, although the literature says it isn't quite correct to calculate it based on voltage; the most correct way to solve this problem from an strictly engineering standpoint is to use an dedicated IC such as a fuel gauge or a coulomb counter.
 ======Bibliography======
 [[https://ocw.cs.pub.ro/courses/iothings]]