BMP280 Sensor Module (Pack of 25) Documentation

Component Documentation

BMP280 Sensor Module

Overview

The BMP280 Sensor Module is a high-precision, compact, and versatile atmospheric pressure sensor module that measures temperature, humidity, and pressure. This module is a popular choice for various IoT applications, including weather stations, home automation, and industrial monitoring systems.

Functionality

The BMP280 Sensor Module is designed to measure the following environmental parameters
Atmospheric pressure ( Pressure Range	300-1100 hPa, Accuracy: 1 hPa)
Temperature (Temperature Range	-40C to 85C, Accuracy: 1C)
Relative Humidity (Humidity Range	0-100% RH, Accuracy: 3% RH)

The module uses a highly sensitive and reliable Bosch BMP280 sensor, which is a piezoresistive pressure sensor that provides high accuracy and stability. The sensor outputs digital data via an IC interface, making it easy to integrate with microcontrollers such as Arduino, Raspberry Pi, and ESP32.

Key Features

High Accuracy: The BMP280 Sensor Module offers high accuracy and reliability in measuring atmospheric pressure, temperature, and humidity.
Compact Size: The module is compact and lightweight, making it suitable for integration into small-scale IoT projects and devices.
Low Power Consumption: The module has a low power consumption of 2.7-5.5V, which is suitable for battery-powered devices.
IC Interface: The module uses an IC interface, which allows for easy communication with microcontrollers and other devices.
Multi-Parameter Measurement: The module can measure multiple environmental parameters simultaneously, making it a cost-effective and efficient solution for IoT applications.
Wide Operating Temperature Range: The module operates within a wide temperature range of -40C to 85C, making it suitable for use in various environmental conditions.
High Resolution: The module provides high-resolution measurements, ensuring accurate and reliable data.
Noise Filtering: The module incorporates noise filtering capabilities to minimize the impact of environmental noise on measurement accuracy.
RoHS Compliance: The module is RoHS compliant, ensuring it meets environmental and safety standards.

Technical Specifications

Supply Voltage

2.7-5.5V

Current Consumption

2.5mA (typical)

Communication Interface

IC

IC Address

0x76 (7-bit) or 0x77 (7-bit)

Operating Temperature Range

-40C to 85C

Storage Temperature Range

-50C to 150C

Dimensions

15mm x 15mm x 2.5mm

Weight

1.5g

Packaging

This product is available in a pack of 25 units, making it an cost-effective solution for large-scale IoT projects or for users who require multiple sensors for their applications.

Applications

The BMP280 Sensor Module is suitable for a wide range of IoT applications, including

Weather stations

Home automation systems

Industrial monitoring systems

Environmental monitoring systems

Wearable devices

Robotics and drones

Medical devices

Documents and Resources

Datasheet

BMP280 datasheet

Application Notes

BMP280 application notes

Sample Code

Sample code for Arduino and Raspberry Pi available upon request

By providing a detailed overview of the BMP280 Sensor Module, this documentation aims to assist technical professionals and informed hobbyists in understanding the functionality, features, and technical specifications of this component, enabling them to design and develop innovative IoT applications.

Pin Configuration

BMP280 Sensor Module Documentation
Overview
The BMP280 Sensor Module is a compact, high-performance barometric pressure sensor module that measures atmospheric pressure, temperature, and altitude. This documentation provides a detailed explanation of the pins and their connections.
Pinout
The BMP280 Sensor Module has a total of 6 pins, labeled as follows:
Pin 1: VCC
Description: Power supply pin, connects to the positive voltage supply (typically 3.3V or 5V)
Connection: Connect to the VCC pin on your microcontroller or power supply
Pin 2: GND
Description: Ground pin, connects to the negative voltage supply (0V)
Connection: Connect to the GND pin on your microcontroller or power supply
Pin 3: SCL (Clock)
Description: Serial Clock pin, used for I2C communication
Connection: Connect to the SCL pin on your microcontroller (e.g., Arduino's SCL pin)
Pin 4: SDA (Data)
Description: Serial Data pin, used for I2C communication
Connection: Connect to the SDA pin on your microcontroller (e.g., Arduino's SDA pin)
Pin 5: CS (Chip Select)
Description: Chip Select pin, used to enable/disable the BMP280 module
Connection: Typically connected to a digital pin on your microcontroller (e.g., Arduino's D10 pin)
Pin 6: NC (No Connection)
Description: No connection pin, not used in the module
Connection: Leave unconnected
Connection Structure
To connect the BMP280 Sensor Module to your microcontroller or development board, follow this structure:
1. Connect VCC to the positive voltage supply (3.3V or 5V)
2. Connect GND to the negative voltage supply (0V)
3. Connect SCL to the SCL pin on your microcontroller
4. Connect SDA to the SDA pin on your microcontroller
5. Connect CS to a digital pin on your microcontroller (e.g., D10)
6. Leave NC unconnected
Important Notes
Ensure the power supply voltage and communication pins match the requirements of your microcontroller and development board.
Use a level shifter or voltage divider if the voltage levels are different between the BMP280 module and your microcontroller.
Consult the datasheet and application notes for specific usage guidelines and programming examples.
By following this documentation, you should be able to successfully connect the BMP280 Sensor Module to your microcontroller or development board and start measuring atmospheric pressure, temperature, and altitude.

Code Examples

BMP280 Sensor Module Documentation

Overview

The BMP280 Sensor Module is a high-accuracy, low-power digital pressure sensor module that measures atmospheric pressure and temperature. It is widely used in IoT applications such as weather stations, indoor navigation, and IoT devices. This documentation provides an overview of the module's specifications, pinout, and example code for using it with popular microcontrollers.

Specifications

Measurement range: 300-1100 hPa (pressure), -40C to 85C (temperature)
 Resolution: 0.01 hPa (pressure), 0.01C (temperature)
 Accuracy: 1 hPa (pressure), 0.5C (temperature)
 Interface: I2C (Inter-Integrated Circuit)
 Supply voltage: 1.71 V to 3.6 V
 Operating current: 2.7 A (normal mode), 0.1 A (sleep mode)

Pinout

The BMP280 Sensor Module has a 6-pin interface:

| Pin | Function |
| --- | --- |
| VCC | Supply voltage (1.71 V to 3.6 V) |
| GND | Ground |
| SCL | I2C clock signal |
| SDA | I2C data signal |
| CSB | Chip select (optional) |
| VIN | Optional voltage input for connecting a voltage regulator (not used in most cases) |

Example Code

### Example 1: Using BMP280 with Arduino

This example demonstrates how to use the BMP280 Sensor Module with an Arduino board to read pressure and temperature values.
```c
#include <Wire.h>
#include <Adafruit_BMP280.h>

Adafruit_BMP280 bmp; // I2C address: 0x76 or 0x77

void setup() {
  Serial.begin(9600);
  while (!bmp.begin()) {
    Serial.println("Could not find BMP280 sensor, check wiring");
    delay(1000);
  }
}

void loop() {
  Serial.print("Temperature = ");
  Serial.print(bmp.readTemperature());
  Serial.println(" C");

Serial.print("Pressure = ");
  Serial.print(bmp.readPressure());
  Serial.println(" Pa");

delay(1000);
}
```
### Example 2: Using BMP280 with Raspberry Pi (Python)

This example demonstrates how to use the BMP280 Sensor Module with a Raspberry Pi board to read pressure and temperature values using Python.
```python
import smbus
import time

# I2C address: 0x76 or 0x77
bus = smbus.SMBus(1)
address = 0x76

def read_pressure():
  bus.write_byte(address, 0x00)  # Register address for pressure
  data = bus.read_i2c_block_data(address, 0x00, 3)
  pressure = (data[0] << 16) | (data[1] << 8) | data[2]
  pressure /= 256.0
  return pressure

def read_temperature():
  bus.write_byte(address, 0x00)  # Register address for temperature
  data = bus.read_i2c_block_data(address, 0x00, 2)
  temperature = (data[0] << 8) | data[1]
  temperature /= 256.0
  return temperature

while True:
  pressure = read_pressure()
  temperature = read_temperature()
  print("Temperature: {:.2f} C, Pressure: {:.2f} Pa".format(temperature, pressure))
  time.sleep(1)
```
Note: In both examples, ensure that the I2C interface is enabled on the microcontroller/board, and the correct I2C address is used (0x76 or 0x77) depending on the BMP280 module's configuration.