Gravity: Multifunctional Environmental Sensor

This multifunctional environmental sensor comprises an SHTC3 temperature & humidity sensor, BMP280 barometric pressure sensor, VEML7700 ambient light sensor and a ML8511 UV sensor into one board and offers 5 kinds of environmental parameters.

Professional sensor chips are selected for each kind of parameter measurement. The reasonable layout and heat conduction of main chips are carefully considered in the circuit design, which effectively guarantees the accuracy of the data.

The product has an MCU processing chip onboard that converts the sensor raw data into values with the standard unit so you can directly use them. For instance, ℃ and °F for temperature, % for humidity, Kpa for barometric pressure, lx for light illuminance, and mw/m² for UV light.

The environmental sensor supports two communication methods (UART and I2C) and complete Arduino and Python libraries are provided.

Powerful and compact, you can use this board to make environmental monitoring systems and similar projects.

Connection Examples – Arduino

Features

• Gravity interface, no need to solder – plug and play
• Switchable I2C and UART, two output modes
• Highly integrated module can test a variety of data at the same time (temperature, humidity, barometric pressure, altitude, ultraviolet intensity, ambient light intensity)
• Reasonable layout with high precision

Specifications

• Working Voltage: 3.3~5V DC
• Working Current: 45mA
• Output Signal: I2C, UART
• Working Temperature: -20~70℃
• Product Size: 32mm×32mm
• Mounting Hole Size: M3 (diameter 3mm)
• Distance between the centres of the mounting holes is 25mm

Barometric Pressure Sensor

• Barometric Pressure Unit Relationship: 1000pa = 10hpa = 1kpa
• Sensor Chip Model: BMP280
• Barometric Pressure Measurement Range: 3000~1100 hPa
• Relative Accuracy Of barometric Pressure: ±0.12 hPa
• Absolute barometric Pressure Accuracy: ±1 hPa

Temperature & Humidity Sensor

• Sensor Chip Model: SHT-C3
• Relative Humidity Accuracy: ±2%RH
• Relative Humidity Resolution: 0.01%RH
• Relative Humidity Measurement Range: 0~100
• Temperature Accuracy: ±0.2℃
• Temperature Resolution: 0.01℃
• Temperature Measurement Range: -40~125℃

UV Sensor

• Sensor Chip Model: ML8511
• Ultraviolet Sensitive Wavelength UV-A (320-400nm), UV-B (280-320nm)
• Ultraviolet Output Unit: mW/㎡

Ambient Light Sensor

• Sensor Chip Model: VEML7700
• Ambient Light Accuracy: 0.0036 lx/ct
• Ambient Light Range: 0~120 klx

Package Contents

• 1x Gravity: Multifunctional Environmental Sensor
• 1x Gravity 4-pin Connector

Resources

• Product wiki
• Schematics

Pinout

Pin	Label	Description
1	D/T	I2C data line SDA/UART data transmission-TX
2	C/R	I2C clock line SCL/UART data receiving-RX
3	–	GND
4	+	Power +