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Pricelist: Retail Price (B2C) Pricelist
BMP180 Digital Barometric Pressure Sensor Module – High-Precision Altitude and Temperature Sensor with I2C Interface for Arduino

BMP180 Digital Barometric Pressure Sensor Module – High-Precision Altitude and Temperature Sensor with I2C Interface for Arduino

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FeatureDetails
Pressure Range300 to 1100 hPa (9000m to -500m above sea level)
InterfaceI2C (Standard Address: 0x77)
Supply Voltage1.8V to 3.6V (Module often includes 5V regulator)
Resolution0.03 hPa / 0.25m
Temperature Range-40°C to +85°C
Power Consumption5 μA (Standard Mode)
Price
₹ 42.37 ₹ 42.37
(Tax included)

Barcode: 8971170

Product Description The BMP180 is a high-precision, digital barometric pressure sensor designed for advanced environmental monitoring and altitude tracking. As the functional successor to the BMP085, it offers ultra-low power consumption and a significantly smaller footprint, making it ideal for mobile devices and portable weather stations. The module utilizes piezo-resistive technology to measure atmospheric pressure and includes an integrated temperature sensor for real-time compensation. Capable of measuring altitude with a resolution of up to 17cm, it is a staple for Arduino-based flight controllers, indoor navigation systems, and localized weather forecasting. Its simple I2C interface allows for seamless data retrieval with minimal wiring.

Key Features

  • High-Precision Altitude Tracking: Provides vertical resolution down to 0.17 meters, perfect for stair-climbing detection and drone stabilization.

  • Ultra-Low Power Consumption: Optimized for battery efficiency, drawing as little as 3 µA in low-power modes.

  • Fully Calibrated Output: Every sensor is factory-calibrated with internal compensation coefficients stored in EPROM for high accuracy.

  • Integrated Temperature Sensor: Provides ambient temperature data required for pressure refinement and general environmental tracking.

  • Wide Compatibility: The breakout module includes an on-board 3.3V regulator, allowing it to interface safely with both 3.3V and 5V microcontrollers.

Technical Details

  • Sensing Architecture: Based on Bosch Sensortec’s proprietary piezo-resistive MEMS technology for high EMC robustness.

  • Pressure Resolution: Features a noise floor as low as 0.02 hPa in ultra-high-resolution mode.

  • Digital Interface: Communicates via a standard I2C bus, supporting clock speeds up to 3.4 MHz for rapid data acquisition.

  • Conversion Time: Rapid response with a maximum conversion time of 4.5ms to 76ms depending on the oversampling setting.

  • Absolute Accuracy: Maintains a high absolute accuracy of ±1.0 hPa over a wide temperature range of 0°C to +65°C.

  • Voltage Input: While the chip operates at 1.8V-3.6V, the module VCC pin typically accepts 3.3V to 5V DC.

  • Data Packet Format: Outputs 16-bit to 19-bit pressure data and 16-bit temperature data via I2C registers.

  • Altitude Calculation: Uses the international barometric formula to derive height based on sea-level pressure (QNH).

  • Sampling Flexibility: Supports four distinct operating modes: Low Power, Standard, High Resolution, and Ultra High Resolution.

  • Hardware Robustness: Features high-quality gold-plated PCB pads for low contact resistance and long-term signal integrity.

  • Miniature Footprint: One of the smallest barometric sensors available, suitable for integration into wearable IoT devices.

  • Lead-Free Construction: Fully RoHS compliant and halogen-free for environmentally friendly electronic assemblies.

  • Pin Configuration: Standard 4-pin breakout: VCC, GND, SCL, and SDA.

  • Logic Levels: I2C lines are compatible with the supplied VCC, though 3.3V logic is native to the sensor.

  • Thermal Drift: Optimized to minimize temperature-induced pressure drift, ensuring stable readings in varying climates.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: Do not connect 9V directly to the VCC pin of this module. Use a 7805 Voltage Regulator or the 5V output of your Arduino. Excess voltage will instantly destroy the sensitive MEMS element.

  • 18650 Cell: A single 18650 cell (3.7V) is a perfect power source. Since the module has an LDO, it will provide stable 3.3V to the sensor even as the cell voltage fluctuates during discharge.

  • IC & Capacitor Tip: For the most stable altitude readings, add a 10uF electrolytic capacitor across the VCC and GND pins. In your software, use an "Average Filter" (10-20 samples) to smooth out minor air pressure fluctuations caused by indoor drafts or wind.

  • Related Products: We recommend pairing this with our DHT22 Temperature & Humidity Sensors, ESP8266 NodeMCU, and 128x64 I2C OLED Displays for a complete IoT weather station.

Package Includes

  • 1 x BMP180 Digital Barometric Pressure Sensor Module.

  • 1 x 4-Pin Male Header Strip.

Disclaimer Image is for illustration purpose only 2-3 lines. The sensor includes a small vent hole on the metal casing; do not cover this hole with tape or glue, as it will block atmospheric pressure and result in static or incorrect readings. Avoid placing the sensor in direct sunlight to prevent thermal interference.