SOIL SURVEY IMPLEMENTATION USING RASPBERRY PI THROUGH COLORIMETRIC DETERMINATION OF NITROGEN, PHOSPHORUS, POTASSIUM, AND PH LEVEL

摘要

The study focuses on creating a portable soil testing device that displays measured level of soil nutrients using colorimetry through Arduino using TCS3200 color sensors The device acquires the data needed through the utilization of soil test kits. A GPS module is used to take the coordinates where the soil sample is taken Results from the soil testing kit will be saved in the Raspberry Pi and will be displayed in a TFT screen after the color sensors from the Arduino is done measuring The saved data will be sent to the database using MySQL for the online mapping of the samples The device was tested using five samples for every macronutrient and pH with ten trials each The benchmark value of 0 05 and 95% level of confidence is used. The computed Chi-Square method values is equal to 1 4 which is lower than the critical value of 3.84. Since the computed values of Chi-Square are less than the critical value, we can conclude that the device result fits the frequency distribution of the trials of the laboratory test.