BME688 Breakout Humidity, Pressure, Temperature Air Quality Sensor

The Bosch Sensortec BME688 is the successor to the BME680 and offers the same measuring capabilities for humidity, pressure, temperature, and air quality. It has a digital I2C/TWI and SPI interface, which can be operated with a voltage regulator and level converter from 3V to 5V. The main difference between the two sensors is that the BME688 also has two Qwiic connectors on the back.

Documentation: 

• Github

Technical Details: 

• General: 
  
• Manufacturer: Watterot 
• Manufacturer SKU: 20182337 
  
• Operating voltage: 3 to 5V 
  
• Interfaces: I2C/TWI, SPI 
  
• Connections: two Qwiic 
  
• Dimensions: 19 x 19 x 2.6mm 
  
• Weight: 3g 
  
• Humidity sensor: 
  
• Response time: (τ63%) 8s 
  
• Accuracy tolerance: ± 3 % relative humidity 
  
• Hysteresis: ≤ 1.5 % relative humidity 
  
• Pressure sensor: 
  
• Pressure range: 300 ... 1100 hPa (equivalent to +9000...-500 m above/below sea level) 
  
• Relative accuracy: ±0.12 hPa, equivalent to ±1 m (950 ... 1050hPa @25°C) 
  
• Absolute accuracy: typ. ±1 hPa (950 ...1050 hPa, 0 ...+40 °C) 
  
• Temperature sensor: 
  
• Operational range: -40°C - +85°C 
  
• Full accuracy: 0°C - +65°C 
  
• Air quality sensor: 
  
• Response time: (τ33-63%) 1s 
  
• Output of Indoor Air Quality Index (IAQ) 

Scope of delivery: 

• 1x BME688 Breakout Humidity-, Pressure-, Temperature Air Quality Sensor   
• 1x Pin header 8x1 pin