GY-MS5803-01BA Red Board Pressure Sensor Module - I2C Interface

The module is designed for a strict 3.0V DC supply. Exceeding this voltage, especially connecting to a 5V system without a logic level converter, can permanently damage the sensor. Always ensure your microcontroller's I2C lines are compatible with 3V logic levels.

Connect the module's VCC to a 3V power source, GND to ground, and the SDA and SCL pins to the corresponding I2C pins on your Arduino (use a logic level converter if your Arduino operates at 5V). You can then use libraries designed for the MS5803 sensor to read pressure and temperature data digitally over the I2C bus.

Yes, the MS5803 sensor is capable of measuring both atmospheric (barometric) pressure and liquid pressure. For liquid applications, ensure only the sensor's port is exposed to the fluid, and the rest of the PCB is properly sealed and protected from moisture to prevent damage.

The PCB module measures 20mm x 19mm. It includes mounting holes for secure installation. The provided header pins allow for breadboard or direct wire connection. For final deployments, consider using standoffs to mount the board and strain relief for connecting wires.

The sensor is factory calibrated, and the calibration coefficients are stored in its internal PROM. These coefficients are used by the driver library to calculate highly accurate compensated pressure and temperature values, eliminating the need for user calibration in most applications.