BMP180 Sensor Specifications

General

• Sensor Type: Barometric pressure & temperature sensor
• Manufacturer: Bosch
• Interface: I²C
• Applications: Altitude measurement, weather monitoring, environmental sensing

Electrical

• Operating Voltage: 1.8 V – 3.6 V (typically 3.3 V)
• Logic Level: 1.8–3.6 V
• Current Consumption:
  • 12 µA (typical)
  • 1 µA (standby)

Performance

• Pressure Range: 300 – 1100 hPa
• Pressure Accuracy: ±1.0 hPa
• Temperature Range: -40°C to +85°C
• Temperature Accuracy: ±2.0°C
• Altitude Accuracy: ~±1 meter (with calibration)
• Resolution: 0.03 hPa (0.25 m)

Physical

• Module Size (typical breakout): ~21 × 18 mm
• Communication Pins: VCC, GND, SDA, SCL

BMP280 Sensor Specifications

General

• Sensor Type: Barometric pressure, temperature, optional humidity (depending module, but BMP280 = pressure + temperature only)
• Manufacturer: Bosch
• Interface: I²C and SPI
• Applications: Weather stations, drones, indoor navigation, IoT modules

Electrical

• Operating Voltage: 1.71 V – 3.6 V (commonly used with 3.3 V)
• Logic Level: 1.71–3.6 V
• Current Consumption:
  • 7 µA (low-power mode)
  • 1 µA (sleep mode)
  • 650 µA (max during measurement)

Performance

• Pressure Range: 300 – 1100 hPa
• Pressure Accuracy: ±1.0 hPa
• Temperature Range: -40°C to +85°C
• Temperature Accuracy: ±1.0°C
• Altitude Accuracy: ~±1 meter (with correct pressure calibration)
• Resolution: 0.16 Pa (very high resolution compared to BMP180)

Physical

• Module Size (typical breakout): ~15 × 12 mm
• Communication Pins: VCC, GND, SDA, SCL, SCK, SDO, CS (for SPI mode)

Summary