{"title":"Adafruit BME688 - Temperature, Humidity, Pressure and Gas Sensor","handle":"adafruit-bme688-temperature-humidity-pressure-and-gas-sensor","url":"/products/adafruit-bme688-temperature-humidity-pressure-and-gas-sensor","description":"The BME688 from Bosch delivers comprehensive environmental sensing in a single compact package. This precision sensor measures temperature, humidity, barometric pressure, and VOC gas levels, all accessible over I2C or SPI.\n\nThe BME688 is a drop-in replacement for the BME680, adding a programmable gas-sensor heater for controlled odour analysis. This enables machine-learning-based odour detection while retaining all the environmental sensing capabilities of its predecessor. The onboard MOX (metal oxide) sensor detects volatile organic compounds such as ethanol and carbon monoxide, providing an overall VOC resistance value for air quality monitoring.\n\nKey Features\n\n\nTemperature – ±1.0°C accuracy\n\nHumidity – ±3% relative humidity accuracy\n\nBarometric Pressure – ±1 hPa absolute accuracy\n\nAltimeter – ±1 metre accuracy (derived from pressure)\n\nVOC Gas Sensor – Heated MOX element with programmable heater for odour analysis\n\nDual Interface – I2C and SPI communication\n\nSTEMMA QT / Qwiic – Plug-and-play I2C connectors, no soldering required\n\nVoltage Range – 3.3V or 5V operation via onboard regulator and level shifting\n\n\nAlso Available\n\n\nAdafruit BME680 – Same sensor family without programmable heater\n\nAdafruit BME280 – Temperature, humidity, and pressure (no gas sensing)\n\n\nIdeal For\n\nIndoor air quality monitoring and odour detection\nWeather stations and environmental logging\nIoT environmental sensing projects\nMachine-learning-based gas classification\n\n\n\nNote: Like all VOC/gas sensors, the BME688 has variability and should be calibrated against known sources for precise measurements. Run the sensor for 48 hours on first use to \"burn it in\", then allow 30 minutes of warm-up each time it is powered on.\n\n\nPackage Contents\n\n1× Adafruit BME688 breakout board with headers\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2992,"title":"Default Title","sku":"AF-5046","price":40.68,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":22,"option1":"Default Title"}]}