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Home / Sensors / BME680 Temperature and Humidity Sensor, Temperature/Humidity/Pressure Detection Module, Barometric Altitude CJMCU-680

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Sensor Model BME680
Detection Parameters Temperature, Humidity, Pressure, Gas
Communication Interface I2C and SPI
Operating Voltage 1.2V to 3.6V
Board Dimensions 22mm x 17mm
Pressure Range 300 to 1100 hPa
Temperature Range -40°C to +85°C
Humidity Range 0 to 100% RH
Gas Sensor Target VOCs (Volatile Organic Compounds)
Compatibility Arduino, Raspberry Pi, ESP32

6 reviews

A

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for weather stations

This module works flawlessly with my ESP32 project. The data readings are consistent and the library support is excellent. Highly recommended for DIY enthusiasts.

A

Anonymous

Mar 16, 2026

Rating: 4/5

Reliable for long-term logging

I have been running this sensor for three weeks straight without any issues. The power consumption is low, which is great for battery-operated projects.

A

Anonymous

Mar 15, 2026

Rating: 4/5

Great sensor, tricky initial setup

The sensor itself is very accurate once calibrated. I had a little trouble getting the I2C address right initially, but the documentation helped sort it out quickly.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Easy to integrate

As a beginner, I was worried about wiring this up, but the pinout is clearly labeled. It connected easily to my Arduino Uno and started reading data immediately.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Excellent value for money

Compared to other environmental sensors, this offers the best bang for your buck. The gas detection feature is a nice bonus for indoor air quality monitoring.

A

Anonymous

Mar 11, 2026

Rating: 5/5

High precision readings

The altitude calculation based on pressure is surprisingly accurate. I tested it against a professional barometer and the results were within acceptable margins.

5 FAQ

Q: Is the casing waterproof?

A: No, the CJMCU-680 board is not waterproof. It should be used in dry environments or housed in a protective enclosure with breathable membrane for pressure sensing.

Q: Does this board come with headers soldered?

A: No, the board is shipped without headers to allow for flexible mounting options. You will need to solder your own pin headers.

Q: Can this operate at 5V logic levels?

A: The sensor chip operates at 3.3V. While the board has a voltage regulator, the logic lines are not 5V tolerant. Please use a level shifter if connecting to a 5V microcontroller.

Q: What is the accuracy of the temperature reading?

A: The typical temperature accuracy is ±1.0°C within the range of 0°C to 65°C.

Q: Is there a specific library required for the gas sensor function?

A: Yes, we recommend using the Adafruit BME680 library or the Bosch BSEC software library for advanced gas resistance analysis.

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