سنسور ضغط هوائي BMP180 GY-68
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سنسور ضغط هوائي BMP180 GY-68
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BMP180 (GY-68) Barometric Pressure Sensor
The BMP180 is a high-precision, industrial-grade digital sensor from Bosch, designed to measure atmospheric pressure and ambient temperature. Because air pressure changes predictably with altitude, this sensor is also widely used as an accurate digital altimeter. This GY-68 module comes ready for integration, featuring a built-in 3.3V regulator and I2C level shifters, making it safely compatible with both 3.3V and 5V microcontrollers.
Key Features
Multimodal Sensing: Measures absolute atmospheric pressure, temperature, and calculates altitude.
High Precision: Offers a resolution down to 0.03 hPa (equivalent to 0.25 meters) in high-linearity mode.
Low Power Consumption: Consumes as little as 3µA in standard operation, making it ideal for battery-powered or portable devices.
Wide Range: Monitors pressure from 300 to 1100 hPa, covering altitudes from 9000m down to -500m.
Ready for Developers: Includes onboard pull-up resistors and a 3.4MHz high-speed I2C interface for fast data communication.
Technical Specifications
| Specification | Value |
| Module Input Voltage | 3.3V to 5.5V DC |
| Pressure Range | 300 to 1100 hPa (+9000m to -500m) |
| Pressure Accuracy | ±0.12 hPa (Relative) |
| Temperature Range | -40°C to +80°C |
| Interface | I2C (Up to 3.4 MHz) |
| Response Time | 5ms to 7.5ms |
| Standby Current | 0.1 µA |
| Dimensions | 15mm x 13mm |
2D-Model:
Pin Configuration & Wiring
| Pin | Name | Description |
| 1 | VIN (VCC) | Power Supply (Connect to 5V or 3.3V) |
| 2 | GND | Ground |
| 3 | SCL | I2C Serial Clock (Connect to Microcontroller SCL) |
| 4 | SDA | I2C Serial Data (Connect to Microcontroller SDA) |
| 5 | 3.3V | Optional: Direct 3.3V input if 5V is not used |
Applications
Drones & Robotics: Reliable altitude hold and vertical velocity indication for UAVs or rockets.
Weather Stations: Precise tracking of local atmospheric changes for weather forecasting.
Navigation: Enhances GPS accuracy by providing vertical positioning for indoor navigation.
Wearables: Integrated into smartwatches and sports devices for trekking and activity tracking.
Smart Devices: Environmental monitoring for mobile phones and computer peripherals.
Package Includes
1x BMP180 Barometric Pressure Sensor (GY-68 Module)
1x 4-Pin Header Strip
Datasheet
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