ALLNET 4duino Barometer (ALL-4duino-BAROMETER) - BMP280 Pressure & Temperature Sensor Module

The ALLNET 4duino Barometer (ALL-4duino-BAROMETER) is a high-precision barometric pressure and temperature sensor module based on the Bosch BMP280 chip. Designed for makers and professionals, this breakout board provides accurate environmental measurements for a wide range of projects.

Advantages

With an absolute pressure accuracy of ±1.0 hPa and temperature accuracy of ±1.0 °C, this module delivers reliable data for weather stations, altimeters, and indoor climate monitoring. Its low power consumption (<1 mA) makes it ideal for battery-powered IoT devices.

Suitable for

• Arduino, Raspberry Pi, ESP32/ESP8266 projects
• Weather stations and barometric pressure logging
• Altitude measurement and drone applications
• Indoor air quality and HVAC systems

Key specifications

• Sensor Chip: Bosch BMP280
• Pressure Range: 300 to 1100 hPa
• Pressure Absolute Accuracy: ±1.0 hPa
• Temperature Range: -40 to +85 °C
• Temperature Accuracy: ±1.0 °C
• Digital Interface: I2C and SPI
• I2C Address: 0x76 or 0x77 (configurable)
• Operating Voltage: 3.3V - 5V DC
• Logic Level: 3.3V
• Pressure Resolution: 0.16 Pa
• Temperature Resolution: 0.01 °C
• Typical Power Consumption: <1 mA
• Module Type: Breakout Board
• Pin Configuration: VCC, GND, SCL, SDA, CSB, SDO

Recommendations

For best results, use with a microcontroller supporting I2C or SPI. The configurable I2C address allows multiple sensors on the same bus. Ensure proper decoupling capacitors near the module for stable operation.