Honors College Thesis
 

Implementing a Low Power Soil Monitoring System for Small- and Large-Scale Applications

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https://ir.library.oregonstate.edu/concern/honors_college_theses/6h441204w

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  • Due to increasing populations, food production must increase significantly to be sustainable. The Internet of Things has been shown to have potential in the field of agriculture to make farming practices more efficient. However, for IoT to be properly integrated into agriculture, sensors must be applied within the field and send data back to a server for analysis. As such, a soil monitoring system was constructed, for use either by a consumer for house plants, or on farms to effectively manage irrigation. This system would be able to monitor the moisture and temperature of the soil, and the temperature and humidity of its surroundings. This way, the user would be able to learn essential information about the environment their plants are growing in, and adjust if need be, with the most important information being gathered is whether the plant needs to be watered or not based on the moisture of the soil. Several modules were chosen for this application, as well as a Bluetooth module so that the system would be able to communicate with a central server. These modules were able to interface with a microcontroller, the Sparkfun Qwiic Pro Micro, and thus shown potential to be used on the field. Thus, each module was integrated together onto a PCB and tested for functionality. While all the modules were shown to function in some way, soldering errors ensured that the PCB was not operating at its full potential. Thus, while such a system has potential in the field of agriculture, more design iterations are required to ensure the longevity and accuracy of the system.
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