7Semi I2C BME680 Sensor Probe Powered by Bosch Sensortec BME680 Sensor

Overview

The 7Semi BME680 Sensor Probe is a professional-grade environmental sensor built around the Bosch Sensortec BME680 chip.

It is a 4-in-1 sensor that measures:

• Temperature

• Humidity

• Barometric Pressure

• VOC (Air Quality)

Unlike small breakout boards, this version comes as a probe with cable, making it ideal for real-world deployments (HVAC, industrial, outdoor monitoring).

Key Features

4-in-1 environmental sensing I2C digital interface (easy integration) Probe-type design with 1m cable flexible installation Protective breathable housing (dust & chemical resistant) Low power consump

Range: 40C to +85C Accuracy: ~1C

Humidity

• Range: 0100% RH

• Accuracy: ~3% RH

Pressure

• Range: 300 1100 hPa

• Useful for altitude & weather monitoring

VOC / Air Quality

• Measures gas resistance IAQ (Indoor Air Quality index)

• Detects gases from:

  • Paints

  • Cleaning agents

  • Human activity

   

Output is relative (index 0500), not exact ppm

Working Principle

Environmental Sensors

• Temperature, humidity, and pressure use MEMS sensing technology

VOC Sensor

• Uses MOx (metal-oxide gas sensor)

• Measures gas /p>

  Interface & Wiring

  I2C Communication

  • Default I2C address: 0x76 (sometimes 0x77)

  Probe vs Breakout (Important Difference)

  Probe version is much better for real deployment

  Applications

  Smart Systems

  • Indoor air quality monitorsme automation

  Industrial Use

  • Factory air monitoring

  • Environmental logging

  • Cleanroom monitoring

  Agriculture

  • Greenhouse monitoring

  • Climate control

  Advantages

  All-in-one sensor (reduces wiring & cost) High reliability (Bosch sensor inside) Easy I2C integration Rugged probe design (real-world ready) Good for long-term deployment

  Limitations (Important)

  VOC is not specific gas measurement Only gives air quality trend/index

  Needs:

  • Burn-in time (~20 min) for stable readings

  • Continuous operation for best IAQ accuracy

  Sensitive to:

  • Temperature & humidity changes (must compensate)

  Compared to SHT40 + SGP40 Module

  4-in-1

  When Should You Use It?

  Use this sensor if you need: Combined weather + air quality data Rugged probe for real environments Simple I2C integration IoT / industrial monitoring

  Pro Tips

  • Always run sensor for continuous readings (15 sec interval)

  • Use libraries like:

    • Bosch BSEC (best for IAQ)

    • Adafruit BME680

  • Avoid placing sensor near: