As conservation efforts are ramping up, the need for accurate biological field measurements becomes apparent. These measurements are usually collected using multiple specialized, expensive devices. For example, soil characteristics (temperature, humidity, and salinity) can be measured using the Aquaterr EC-350 at a price point of $1350. Similarly, the Kestrel 3500 Weather Meter measures humidity, pressure, temperature, wind speed, and wind direction for the price of $200. We used readily-available sensors that communicate via I2C controlled by an Arduino Uno Rev3 development board to create a single, compact device. This device can measure pressure, altitude, temperature, humidity, soil temperature, and soil humidity for under $100. A similar approach can be taken for other projects to create custom equipment that is accurate, cost-effective, and modular.