Bosch BME680/688 – Overview of the Bosch BME680/688 Sensor

The BME680 sensor measures temperature, humidity and barometric pressure and produces a Volatile Organic Compound gas resistance and communicates these readings over an I2C bus interface.

Bosch uses the ISO16000-29 standard test methods for VOC detectors to calibrate the BME680 sensors.

Bosch produces a library named BSEC that implements an algorithm to provide the combination of the input measurements as an Indoor Air Quality (IAQ) value. The index ranges from 0 – 500 to indicate or quantify the quality of the air in the immediate environment where measurements are taking place.

The IAQ scale ranges from 0 (clean air) to 500 (heavily polluted air).