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iothings:proiecte:2022:low_power_environmental_monitoring_system [2023/01/18 22:21] ciprian.costea [7. Further work] |
iothings:proiecte:2022:low_power_environmental_monitoring_system [2023/01/19 21:58] (current) ciprian.costea [7. Further work] |
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| The hardware schematics and wiring can be observed in the following image developed in [[https://www.kicad.org/|Kicad]] \\ | The hardware schematics and wiring can be observed in the following image developed in [[https://www.kicad.org/|Kicad]] \\ | ||
| - | {{ :iothings:proiecte:2022:costea_schematic_iot_project.png | Hardware schematic of the project}} | + | {{ :iothings:proiecte:2022:costea_schematic_iot_project_4.png?819 | Hardware schematic of the project}} |
| The ESP32 board is being powered through its 3.3V pin and the communication with the BME280 sensor is realized through the | The ESP32 board is being powered through its 3.3V pin and the communication with the BME280 sensor is realized through the | ||
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| ====== 5. Results & Challenges ====== | ====== 5. Results & Challenges ====== | ||
| - | As it can be seen in the following images from the [[https://www.wunderground.com/pws/overview|WeatherUnderground]], under the page related to the registered device, the periodically queried BME280 sensor data is being received and displayed. | + | As it can be seen in the following images from the [[https://www.wunderground.com/pws/overview|WeatherUnderground]], under the page related to the registered device (in this case -- IBUCHA284), the periodically queried BME280 sensor data is being received and displayed. |
| {{ :iothings:proiecte:2022:costea_wunderground_1.png?800 | Wunderground project data table}} | {{ :iothings:proiecte:2022:costea_wunderground_1.png?800 | Wunderground project data table}} | ||
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| More analysis with respect to usage of RTC memory in Deep Sleep as opposed to directly using Hibernation mode would be of interest. While Hibernation mode uses less power by not keeping the RTC recovery memory on, in Deep Sleep we could use this RTC memory to store any relevant data and maybe bypass some of the initialization mechanism. Some effort was invested in this regard, but the **RTC_DATA_ATTR** data type is not complex enough to support storing information regarding Wifi or Firebase status. Nevertheless, the tradeoff between Hibernation and Deep Sleep could be further explored. | More analysis with respect to usage of RTC memory in Deep Sleep as opposed to directly using Hibernation mode would be of interest. While Hibernation mode uses less power by not keeping the RTC recovery memory on, in Deep Sleep we could use this RTC memory to store any relevant data and maybe bypass some of the initialization mechanism. Some effort was invested in this regard, but the **RTC_DATA_ATTR** data type is not complex enough to support storing information regarding Wifi or Firebase status. Nevertheless, the tradeoff between Hibernation and Deep Sleep could be further explored. | ||
| - | Power consumption of this project could be monitored by using the ADC module available on the ESP32 platform, taking into consideration that the Li-Ion battery outputs a voltage between 3.7V and 4.2V (when fully charged). | + | Li-Ion battery level could be monitored by using the ADC module available on the ESP32 platform, taking into consideration that the battery outputs a voltage between 3.7V and 4.2V (when fully charged). |
| - | Since this project is finally intended to be installed outdoors, a platform connection through a low throughput, low data rate, low power and long distance communication protocol such as [[https://lora-alliance.org/about-lorawan/|LoRaWAN]] would be more practical compared to WiFi, which was used as a first demonstration. | + | Since this project is finally intended to be installed outdoors, a platform connection through a low throughput, low data rate, low power and long distance communication protocol such as [[https://lora-alliance.org/about-lorawan/|LoRaWAN]] would be more practical compared to WiFi. |
| A more suitable case/packaging could be built/developed for the hardware solution of this project. | A more suitable case/packaging could be built/developed for the hardware solution of this project. | ||
| ====== 8. Resources ====== | ====== 8. Resources ====== | ||
| + | [[https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf]] \\ | ||
| [[https://esphome.io/devices/nodemcu_esp32.html]] \\ | [[https://esphome.io/devices/nodemcu_esp32.html]] \\ | ||
| [[https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/sleep_modes.html]] \\ | [[https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/sleep_modes.html]] \\ | ||
