Using various sensors to gather and record data over a 24 hour period. For my ENGR 103 Final Project I wanted to determine if there was a relationship between temperature and soil moisture. My hypothesis was soil moisture will decrease as temperature increases due to more evaporation. For my project I used a resistive hygrometer which has two legs, one which sends out low voltage and the other leg reads the voltage coming in. From this you can calculate the resistance of the soil, lower if it is more wet and higher if it is dry. For my temperature sensor I used a digital thermometer (LM75a) which has precision within 2 °C. In addition I hooked up a pixel by pixel display to display the current readings and the duration of data collection. My results found that the moisture of the soil rapidly increased as soon as I watered the soil then rapidly decreased shortly after as it drained through the soil. The temperature data varied more than I thought it would because my testing location was in the sun and near an air vent which cooled it. Overall, the testing went very well, I learned a lot of things and the soil moisture went down faster than I would have expected.