BME680

The BME680 is a Bosch integrated environmental sensor measuring temperature, humidity, barometric pressure, and air quality (VOC gas). Supports both I2C and SPI interfaces. Ideal for indoor air quality monitoring, weather stations, HVAC control, and IoT applications. Unlike the BME280, it includes a metal-oxide gas sensor for IAQ/VOC detection.

Specifications:

• Sensor: Bosch BME680
• Supply Voltage: 1.8V – 5V
• Interface: I2C (up to 3.4MHz) or SPI (up to 10MHz)
• I2C Address: 0x76 (SDO LOW) / 0x77 (SDO HIGH)
• Pressure Range: 300 – 1100 hPa
• Humidity Range: 0 – 100% RH
• Gas Sensor: MOX (metal-oxide) for VOC / IAQ detection
• Operating Temperature: −40°C to +85°C

Applications:

• Indoor air quality (IAQ) and VOC monitoring
• Weather monitoring and altitude estimation
• HVAC control and home automation
• Smart building and IoT environmental nodes
• Wearable health and fitness devices