BME680 Gas/Env Sensor

Package

LGA mm

Package Dimensions

3.0 x 3.0 x 0.93

Interface

I2C, SPI

I2c Clock Speed

3.4 MHz

Spi Clock Speed

10 MHz

Operating Voltage Vdd

1.71 V

Operating Voltage Vdd

3.6 V

Operating Voltage Vddio

1.2 V

Operating Voltage Vddio

3.6 V

Current Consumption Sleep

0.15 µA

Current Consumption Humidity Temp

2.1 µA

Current Consumption Pressure Temp

3.1 µA

Current Consumption Gas Heater

9 mA

Current Consumption Gas Peak

15 mA

Operating Temperature Range

-40 °C

Operating Temperature Range

85 °C

Operating Humidity Range

0 % r.H.

Operating Humidity Range

100 % r.H.

Operating Pressure Range

300 hPa

Operating Pressure Range

1100 hPa

Humidity Accuracy

±3 % r.H.

Pressure Accuracy

±0.6 hPa

Temperature Accuracy

±0.5 °C

Gas Sensor Response Time

0.75 s

Iaq Range

0-500

VDD is 1.71-3.6 V and VDDIO 1.2-3.6 V (per the datasheet specs); a 3.3 V part on I2C/SPI. The integrated gas heater draws up to ~15 mA in bursts.

• Indoor air-quality (VOC) sensing
• Combined temperature/humidity/pressure/gas logging
• Smart-home environmental nodes

• Allow gas-heater warm-up and budget for current spikes on the supply.
• Level-shift / use a 3.3 V module with 5 V MCUs.
• Provide I2C pull-ups; set the address pin for 0x76/0x77.

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Community starter examples — minimal, unofficial, and provided to get you wiring fast. Verify against the manufacturer datasheet before relying on them.

// BME680 temp/humidity/pressure/gas (I2C) — community starter example
#include <Wire.h>
#include <Adafruit_BME680.h>

Adafruit_BME680 bme;  // I2C

void setup() {
  Serial.begin(115200);
  Wire.begin();
  if (!bme.begin()) { Serial.println("BME680 not found"); while (1) delay(10); }
  bme.setGasHeater(320, 150);   // 320 C for 150 ms
}

void loop() {
  if (bme.performReading()) {
    Serial.print("T="); Serial.print(bme.temperature); Serial.print(" C  RH=");
    Serial.print(bme.humidity); Serial.print(" %  Gas=");
    Serial.print(bme.gas_resistance / 1000.0); Serial.println(" kOhm");
  }
  delay(2000);
}

# BME680 (ESP32) — community starter example
# lib: robert-hh/BME680-Micropython (bme680.py on the board)
from machine import Pin, I2C
import bme680, time

i2c = I2C(0, scl=Pin(22), sda=Pin(21))
sensor = bme680.BME680_I2C(i2c)

while True:
    print(sensor.temperature, sensor.humidity, sensor.pressure, sensor.gas)
    time.sleep(2)