SparkFun Environmental Combo Breakout - ENS160/BME280 (Qwiic)

A combined air quality and environmental sensor breakout featuring the ENS160 (air quality index, eCO2, TVOCs) and BME280 (temperature, humidity, barometric pressure) on a single Qwiic-enabled board. The two sensors work together — the BME280 provides real-time humidity and temperature data that the ENS160 uses to fine-tune its air quality readings for greater accuracy.

All communication is via I²C with Qwiic connectors for solderless setup. Standard 0.1″ headers are also broken out for breadboard use. Jumper-selectable I²C addresses allow flexibility in multi-sensor configurations.

Key Features

• ENS160 Air Quality Sensor – AQI (1–5), eCO2 (400–65,000 ppm), TVOC (0–65,000 ppb)
• BME280 Environmental Sensor – Temperature, humidity, and barometric pressure
• Sensor Fusion – BME280 data improves ENS160 accuracy
• Qwiic / I²C Interface – 2× Qwiic connectors, no soldering required
• Jumper-Selectable Addresses – ENS160: 0x53/0x52, BME280: 0x77/0x76
• CCS811 Replacement – ENS160 is the next-generation air quality sensor

ENS160 Specifications

• AQI Range: 1–5 (UBA standard)
• eCO2 Range: 400–65,000 ppm (1 ppm resolution)
• TVOC Range: 0–65,000 ppb (1 ppb resolution)
• Operating Temperature: −40 °C to 85 °C
• Operating Humidity: 5–95% RH (non-condensing)
• I²C Address: 0x53 (default) or 0x52

BME280 Specifications

• Temperature: −40 °C to 85 °C, ±0.5 °C accuracy (0–65 °C), 0.01 °C resolution
• Humidity: 0–100% RH, ±3% accuracy (20–80% RH), 0.008% resolution
• Pressure: 300–1100 hPa, ±1 hPa absolute accuracy, 0.18 Pa resolution
• Altitude: 0–30,000 ft, ~1 m relative accuracy at sea level
• I²C Address: 0x77 (default) or 0x76

Board Specifications

• Input Voltage: 3.3 V (typical, via Qwiic)
• Onboard Regulator: 1.8 V AP2127K (for ENS160)
• I²C Pull-ups: 2.2 kΩ (jumper configurable)
• Dimensions: 25.4 × 25.4 mm (1″ × 1″)
• Weight: 2.5 g

Ideal For

• Indoor air quality monitoring
• Smart home and building automation
• Weather stations and environmental logging
• HVAC monitoring and control
• Personal health and wellness tracking

Package Contents

• 1× SparkFun Environmental Combo Breakout – ENS160/BME280 (Qwiic)

Resources

• Hookup Guide
• ENS160 Datasheet (PDF)
• BME280 Datasheet (PDF)
• Schematic (PDF)
• Eagle Files (ZIP)
• Board Dimensions (PNG)
• ENS160 Arduino Library (GitHub)
• BME280 Arduino Library (GitHub)
• Hardware Repo (GitHub)