DFRobot
Gravity: Science Data Acquisition Module Kit for Experiments Education
The Gravity Science Data Acquisition Module Kit is a comprehensive toolkit for conducting digital scientific experiments without programming or electronics k...
The Gravity Science Data Acquisition Module Kit is a comprehensive toolkit for conducting digital scientific experiments without programming or electronics knowledge. Built around the DFRobot SCI DAQ module, it includes four sensors covering soil moisture, ambient light, temperature/humidity, and air quality — everything needed for hands-on STEM exploration.
The SCI DAQ module features automatic sensor recognition, a built-in 1.3-inch OLED display, data logging with 16 MB onboard storage, and an RTC clock. Simply plug in a sensor, and the module handles data conversion and display automatically. It also outputs data via I2C, making it compatible with micro:bit, Arduino, Raspberry Pi, and UNIHIKER.
Key Features
- No Programming Required – Plug-and-play sensor reading and data logging
- Automatic Sensor Recognition – SCI DAQ module detects connected sensors automatically
- 1.3-Inch OLED Display – Real-time data readout on the module
- 16 MB Onboard Storage – Log experimental data for later analysis
- RTC Clock – Timestamp data with included CR1220 battery
- Sensor Calibration – Built-in calibration functions
- I2C Output – Compatible with micro:bit, Arduino, Raspberry Pi, UNIHIKER
- Flexible Power – 3.3–5.5V DC via USB or 3×AA battery holder
Included Sensors
- Analogue Soil Moisture Sensor – 3.3–5V, 0–4.2V output, 60×20×5 mm
- VEML7700 Ambient Light Sensor – I2C, 0–120 klx range, 0.0036 lx resolution
- SHT31-F Temperature & Humidity Sensor – I2C, ±0.2°C / ±2% RH accuracy, −40°C to 125°C range
- ENS160 Air Quality Sensor – I2C, eCO2 (400–65,000 ppm) and TVOC (0–65,000 ppb)
SCI DAQ Module Specifications
- Operating Voltage – 3.3–5.5V DC
- Operating Current – 40 mA
- Interfaces – 1× Digital/Analogue, 2× I2C/UART
- Output – I2C (address 0x21–0x23)
- Display – 1.3-inch OLED
- Storage – 16 MB
- Dimensions – 62 × 52 × 13 mm
Ideal For
- STEM education and classroom experiments
- Environmental monitoring: soil, light, temperature, humidity, air quality
- Science fair projects and student research
- Introducing data acquisition without coding
Package Contents
- 1× Gravity SCI DAQ Module
- 1× Analogue Soil Moisture Sensor
- 1× VEML7700 Ambient Light Sensor
- 1× SHT31-F Temperature & Humidity Sensor
- 1× ENS160 Air Quality Sensor
- 1× 3×AA Battery Holder (PH2.0-2P)
- 1× Type-C & Micro 2-in-1 USB Cable (1 m)
- 1× RTC Battery (CR1220)
- 4× Double-headed PH2.0-4P Cables (20 cm)
- 2× Double-headed PH2.0-3P Cables (20 cm)
- 1× Gravity 4P I2C/UART Sensor Cable (30 cm)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Ambient light sensor
- A sensor that measures the general brightness of light falling on it, similar to how a device can adjust screen brightness automatically. It matters when you want a project to react to room lighting, daylight, shadows, or covered/uncovered conditions.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- OLED
- OLED stands for organic light-emitting diode, a display type where each pixel produces its own light. It matters because OLED screens are thin, high-contrast and easy to read for small status displays, but they can be more sensitive to image burn-in than some other display types.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- UNIHIKER
- UNIHIKER is a small programmable computer board used in education and maker projects, often connected to external sensors and modules. Compatibility matters because the cable must match the board’s connector type and pin layout.
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Brands
Sensors & Input
STEM & Education
Supplier page — dfrobot.com
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Related Tutorials
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