What is the BMP180?
The BMP180 I2C IIC Digital Atmospheric Pressure, Temperature, and Altitude Sensor is a highly accurate sensor designed for a variety of environmental monitoring applications. It provides precise measurements of atmospheric pressure, temperature, and altitude, making it ideal for weather stations, drones, and GPS applications. With its pre-soldered pins, it is ready for immediate use, ensuring quick and hassle-free integration into your projects. This product is great for Raspberry Pi, Arduino, and DIY projects, as there are many tutorials online, including tutorials at ShillehTek, that teach you how to use the sensor in practice.
Operating Mechanisms of the BMP180
The BMP180 operates by utilizing its integrated sensors to measure atmospheric pressure, temperature, and altitude with high precision. Here's a breakdown of its operating mechanisms:
- Pressure Measurement: The BMP180 measures atmospheric pressure in the range of 300 to 1100 hPa. This data can be used to calculate altitude, making it ideal for applications such as weather stations and altimeters.
- Temperature Measurement: The BMP180 measures temperature in the range of -40 to 80℃, providing accurate environmental data for various applications.
- Altitude Calculation: By converting pressure readings to altitude, the BMP180 is perfect for GPS applications and drones, providing reliable altitude data.
- Pre-Soldered Convenience: The BMP180 comes with pre-soldered pins, eliminating the need for soldering skills or additional equipment. This user-friendly design saves time and effort, making it accessible for both beginners and experienced users.
- Communication Interface: The BMP180 communicates with microcontrollers via the I2C interface, allowing for easy integration with devices like Raspberry Pi, Arduino, and ESP32.
By combining these mechanisms, the BMP180 provides a comprehensive solution for environmental sensing, making it an essential component in many modern electronic projects.
Please note that the BMP180 is the predecessor of the BMP280. While it slightly lags behind in performance compared to the BMP280, it remains a cost-effective and accurate sensor.
Pins
BMP180 Pinout
VCC (Power Supply: +3.3V)
This pin is used to supply power to the BMP180. The sensor operates at 3.3V.
Connection: Connect this pin to the 3.3V power supply from your microcontroller or development board.
GND (Ground)
This pin is the ground connection for the sensor. It should be connected to the ground of your power supply or microcontroller.
Connection: Connect this pin to the ground (GND) of your microcontroller or development board.
SCL (Serial Clock)
This pin is used for the I2C clock signal. It synchronizes the data transfer between the BMP180 and the microcontroller.
Connection: Connect this pin to the I2C clock pin (SCL) on your microcontroller.
SDA (Serial Data)
This pin is used for the I2C data signal. It is used for bidirectional data transfer between the sensor and the microcontroller.
Connection: Connect this pin to the I2C data pin (SDA) on your microcontroller.
3.3V (Output)
This 3.3V pin is typically provided as an output, not an input. It outputs a regulated 3.3V voltage, which can be useful for powering other components in your circuit that require a 3.3V supply.
Technical Specifications
| Specification | Details |
|---|---|
| Temperature Range | -40 to 80℃ |
| Pressure Range | 300 to 1100 hPa |
| Altitude Calculation | Yes, based on pressure readings |
| Power Supply | 3.3V |
| Output Signal | Digital (I2C) |
| Dimensions | 3.6 x 3.8 x 0.93mm |
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