// Goes with it

Complete the build

Our own DIYKIT board was made for this — plus what it is usually wired or ordered with.

DKB-0004-B

GPIO Card for Raspberry Pi 4 & 5 - 40-Pin Pinout Reference

53 in stock

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ESP32U

ESP32U DevKitC Type-C - ESP32 WiFi & Bluetooth Development Board, NodeMCU-32

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DIY-212

Jumper Wire Assorted Pack 120 Pieces - Male-to-Male, Male-to-Female, Female-to-Female 10cm Ribbon Cables for Breadboard & Arduino Prototyping

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DIY-295

Transparent 830 Points Solderless Breadboard Clear Prototype Circuit Board MB-102 High Quality DIY Electronic Testing Experiment PCB Base with Power Plane

4 in stock

// Where this part goes

Used in these kits and projects

All projects →

Kit ESP32 Plant Monitoring Learning Kit 7 parts · 7 projects →

// 01

Description

The BME280 Sensor Module is a compact, high-performance digital sensor that measures temperature, relative humidity, and barometric pressure in one board. It’s a popular upgrade over basic sensors because it provides stable digital readings and pressure data that can be used for weather trend monitoring and altitude estimation (relative altitude changes based on pressure).

This module supports both I2C and SPI communication, making it easy to connect to a wide range of platforms including Arduino (with proper level shifting if needed), ESP32, and Raspberry Pi. It’s ideal for DIY projects such as weather stations, indoor air monitoring, portable environmental loggers, drones/robots (altitude/pressure), and smart home automation.

Key Features & Benefits

3 Sensors in 1 Module: Temperature + humidity + pressure in a single compact board
Digital I2C/SPI Output: Reliable measurements with minimal analog noise
Barometric Pressure Sensing: Useful for weather forecasts and altitude calculations
Compact & Low Power: Great for battery-powered IoT devices and sensor nodes
Wide Platform Support: Libraries available for Arduino, ESP32, and Raspberry Pi
Breadboard Friendly: Common pin spacing for quick prototyping

Interface & Pin Notes

Most BME280 modules expose pins such as VCC, GND, SCL, SDA (I2C) and may also include CS, SDO, SDI/SDA for SPI. Some boards include a regulator/level shifting, while others are 3.3V-only.

Important: The BME280 sensor IC typically operates at 1.8V–3.6V. Many modules are intended for 3.3V logic. If your board is a 3.3V-only module, avoid direct 5V logic signals unless the module includes level shifting.

Typical Specifications

Item	Typical Value
Sensor	BME280
Measurements	Temperature, Humidity, Pressure
Interface	I2C / SPI
Operating Voltage (Sensor IC)	1.8V–3.6V
Best Logic Level	3.3V
Use Cases	Weather station, altimeter, IoT monitoring

Note: Accuracy and voltage behavior depend on the specific module version (with/without regulator and level shifting).

Common Applications

DIY weather station (pressure trend + humidity + temperature)
Indoor climate monitoring and data logging
Altitude estimation for drones/robots (relative altitude)
Smart home automation (HVAC monitoring)
Portable environmental monitoring devices

// 02

Specifications

Sensor Bosch BME280

Measures Temp + humidity + pressure

Interface I2C / SPI

Supply Voltage 3.3-5 V

Accuracy ±1°C / ±3%RH / ±1hPa (typ)

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// From Sensors