BMP180 Digital Barometric Pressure Sensor Module GY-68

The BMP180 Digital Barometric Pressure Sensor Module measures atmospheric pressure from 300 to 1100 hPa using a MEMS (Micro Electro Mechanical System) pressure sensor and outputs calibrated digital readings over I2C (a two-wire communication bus). The bmp180 sensor runs on 1.8V to 3.6V input voltage, so it works directly with 3.3V boards without a level shifter. Each pressure reading takes just 5 milliseconds to convert.

The bmp180 pressure sensor has a factory-calibrated EEPROM (a non-volatile memory chip) on board that stores individual compensation values for that specific sensor. Skipping this step gives wrong readings every time. The honest limitation is the 3.6V maximum input voltage. Connecting 5V directly damages the sensor permanently. The barometric pressure sensor connects to Arduino, ESP32, and STM32 I2C pins. To start, connect SDA and SCL, power with 3.3V, and install the Adafruit BMP085 library. StemVolt provide this sensor with confirmed I2C communication and pressure output.

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Features:

• Input voltage from 1.8V to 3.6V connects directly to ESP32 and STM32 3.3V boards without level shifter
• I2C communication interface at up to 3.4 MHz allows fast repeated pressure polling in real-time builds
• gy 68 bmp180 sensor module peak current at 1000µA suits continuous low-power embedded monitoring builds

Technical specifications:

Applications:

• Weather station project uses this sensor to display current atmospheric pressure on an LCD screen
• Altitude meter uses this to calculate height above sea level using the measured pressure value
• BMP180 Digital Barometric Pressure Sensor Module reads pressure drop and triggers an alert on ESP32
• bmp180 pressure sensor logs altitude data via I2C during a UAV flight and saves it to an SD card

Package includes:

• 1 x BMP180 Digital Barometric Pressure Sensor Module