Generic GY-MS5803-14BA Red Board Pressure Sensor Module - I2C Interface, 0-14 Bar

The module is designed to operate strictly at 3.0V DC. Exceeding this voltage can damage the sensor. For systems with 5V logic, use a logic level converter or a regulated 3.3V power supply, ensuring the input does not surpass 3.6V absolute maximum.

Connect the module's VCC to 3.3V, GND to GND, SDA to the Arduino's SDA pin (e.g., A4 on Uno), and SCL to the SCL pin (e.g., A5 on Uno). Use the I2C protocol with a dedicated library for the MS5803 sensor to request pressure and temperature readings. Example code is often provided by the supplier.

Yes, the MS5803-14BA sensor is capable of measuring both gaseous and liquid media pressure. For liquid depth sensing, ensure only the sensor's pressure port is exposed to the liquid, and the rest of the electronics are properly sealed. The 0-14 bar range corresponds to a water depth of approximately 140 meters.

The integrated 24-bit ADC provides high-resolution data. The MS5803-14BA sensor typically offers high accuracy, but specific tolerance values (e.g., ±0.5% FS) depend on the OEM's calibration. Refer to the official MS5803-14BA datasheet for detailed performance curves over temperature.

Yes, the MS5803 sensor is factory calibrated, and the calibration coefficients are stored in its internal PROM. These are used by the driver code to compute compensated pressure and temperature values. Under normal operating conditions, periodic recalibration is not required for most applications.