Breakout board with Bosch BME280 for measuring temperature, humidity and air pressure at 3.3V.
SKU: OT711-D64 Article number: NB078 EAN: 4184669585804 Location: D06.04
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How to connect the 3-in-1 sensor Temperature, Humidity, and Air Pressure | 3.3V | I2C and SPI | Bosch BME280 to an Arduino UNO or ESP32, with an example sketch you can upload straight away.
This project reads ambient temperature, relative humidity, and atmospheric pressure using a 3.3V BME280 sensor connected to an Arduino Uno. A 4-channel bidirectional logic level shifter safely translates the 5V I2C signals down to 3.3V. Sensor readings are output to the Serial Monitor every two seconds.
/*
* ==================================================================
* Generated by Codey.online — https://www.codey.online
* ==================================================================
* Project : BME280 Temperature, Humidity & Pressure Sensor Demo
* Board : Arduino UNO (arduino:avr:uno)
* Parts : Bosch BME280 3.3v 3-in-1 sensor Temperature Humidity and Air Pressure
* Libraries : Adafruit BME280 Library 2.3.0, Adafruit Unified Sensor 1.1.15
*
* Codey Online is an AI-powered browser IDE for Arduino and ESP32.
* Describe your project and Codey writes the code, draws the wiring
* diagram and uploads it to your board, straight from the browser.
* This code is free to use, modify and share, without warranty.
* ==================================================================
*/
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
Adafruit_BME280 bme;
void setup() {
Serial.begin(115200);
while (!Serial) delay(10);
Serial.println(F("Initializing BME280 sensor..."));
// SDO tied to GND sets address to 0x76
if (!bme.begin(0x76, &Wire)) {
Serial.println(F("Could not find BME280 sensor. Check wiring!"));
while (1) delay(100);
}
Serial.println(F("BME280 sensor ready!"));
}
void loop() {
float temperature = bme.readTemperature();
float humidity = bme.readHumidity();
float pressure = bme.readPressure() / 100.0F; // Convert Pa to hPa
Serial.print(F("Temperature: "));
Serial.print(temperature, 1);
Serial.print(F(" °C | Humidity: "));
Serial.print(humidity, 1);
Serial.print(F(" % | Pressure: "));
Serial.print(pressure, 1);
Serial.println(F(" hPa"));
delay(2000);
}
Required libraries: Adafruit BME280 Library 2.3.0, Adafruit Unified Sensor 1.1.15
Wiring diagram and example code generated by Codey.online — https://www.codey.online
This project reads ambient temperature, relative humidity, and barometric pressure from the Bosch BME280 sensor using the I2C interface. Connect the 3.3V sensor directly to the ESP32 power and default I2C pins (GPIO 21 and 22). Open the Serial Monitor at 115200 baud to view real-time environmental measurements updated every two seconds.
/*
* ==================================================================
* Generated by Codey.online — https://www.codey.online
* ==================================================================
* Project : ESP32 BME280 Weather Sensor Monitor
* Board : ESP32 DEVKIT V1 (esp32:esp32:esp32doit-devkit-v1)
* Parts : Bosch BME280 3.3v 3-in-1 sensor Temperature Humidity and Air Pressure
* Libraries : Adafruit BME280 Library 2.3.0, Adafruit Unified Sensor 1.1.15
*
* Codey Online is an AI-powered browser IDE for Arduino and ESP32.
* Describe your project and Codey writes the code, draws the wiring
* diagram and uploads it to your board, straight from the browser.
* This code is free to use, modify and share, without warranty.
* ==================================================================
*/
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
Adafruit_BME280 bme;
void setup() {
Serial.begin(115200);
while (!Serial) delay(10);
Serial.println("Initializing BME280 sensor...");
// Default I2C address is usually 0x76 or 0x77
if (!bme.begin(0x76) && !bme.begin(0x77)) {
Serial.println("Could not find a valid BME280 sensor! Check wiring.");
while (1) delay(100);
}
Serial.println("BME280 initialized successfully.");
}
void loop() {
float temperature = bme.readTemperature();
float humidity = bme.readHumidity();
float pressure = bme.readPressure() / 100.0F; // Convert Pa to hPa
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println(" °C");
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println(" %");
Serial.print("Pressure: ");
Serial.print(pressure);
Serial.println(" hPa");
Serial.println("------------------------");
delay(2000);
}
Required libraries: Adafruit BME280 Library 2.3.0, Adafruit Unified Sensor 1.1.15
Wiring diagram and example code generated by Codey.online — https://www.codey.online
NOTE 3.3V version. Suitable for ESP8266, ESP32, Wemos D1 etc.
GY-BME280 is a Breakout Board with a Bosch Sensortec ME280 Temperature, Humidity, and Barometric Pressure Sensor.
The board has a selectable I2C address (solder link GS2)
- I2C pull-up resistors
- Includes 7 pin header 2.54mm
- two mounting holes of 3.5mm.
BME280 Features
- Sensor brand: Bosch
- Sensor size 2.5mm x 2.5mm x 0.93mm metal cap LGA
- Digital interface I2C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)
- Supply voltage: 3V to 3.6 V
- Power consumption 1.8 uA @ 1Hz humidity and temperature, 2.8 uA @ 1Hz pressure and temperature. 3.6 uA @ 1Hz humidity, pressure and temperature and 0.1 uA in sleep mode
- Temperature sensor range -40 / +85 C,
- Humidity range; 0 - 100% rel. Humidity
- Barometric pressure range: 300- 1100 hPa
- Both I2C and SPI
Dimensions
Length: 1.47cm
Width: 1.14cm
Height: 0.23cm

| Dimensions | 1,47cm x 1,14cm x 0,23cm |
|---|---|
| Pin spacing | 2,54 mm |
| Interface | I2C |
| Suitable for | ESP8266, ESP32, Wemos D1 |
| Temperature range | -40 / +85 C |
| Supply voltage | 3V to 3.6 V |
| Mounting holes | 3.5mm |
| Max. humidity | 0 - 100% rel. |
| Sensor size | 2.5mm x 2.5mm x 0.93mm |
| Air pressure | 300- 1100 hPa |
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3-in-1 sensor Temperature, Humidity, and Air Pressure | 3.3V | I2C and SPI | Bosch BME280