DFRobot Gravity Analog Current to Voltage Converter (for 4~20mA Application) The Gravity: Analog Current to Voltage Converter is a versatile module designed to bridge the gap between industrial equipment and hobbyist electronics. This current to voltage converter linearly transforms 0-25mA current signals into 0-3V voltage outputs that can be easily read by microcontrollers like Arduino. Industrial sensors and devices typically output 4-20mA current signals, which standard microcontrollers cannot directly interpret. This industrial sensor interface module solves that problem by converting these signals into voltage readings that any analog input pin can process. The module's wide detection range of 0-25mA makes it particularly useful for fault diagnosis (below 4mA) and overrun detection (above 20mA) applications. What makes this 4-20mA signal converter stand out is its combination of high precision and ease of use. The module uses a 0.1% high-precision sense resistor paired with an ultra-low noise rail-to-rail zero-drift operational amplifier, ensuring accurate readings without requiring calibration. With measurement accuracy of ±0.5% at 16-bit ADC resolution, this module delivers reliable data for critical applications. The wide supply voltage range of 3.3V to 5.5V ensures compatibility with various development boards, while the standard Gravity 3-pin interface makes connections simple and straightforward. Whether you're working on Arduino current measurement projects, industrial automation, or sensor integration, this converter provides a reliable bridge between industrial standards and DIY electronics. Features: Supply Voltage: 3.3~5.5V for compatibility with various microcontrollers. Detection Range: 0~25mA DC for comprehensive current monitoring. Measurement Accuracy: ±0.5% F.S. @ 16-bit ADC, ±2% F.S. @ 10-bit ADC. Termination Resistance: 120? for standard current loop applications. Connector Type: PH2.0-3P for easy plug-and-play connection. Product Size: 30mm × 22mm (1.18inch × 0.87inch) compact design. Linear conversion from current to voltage without requiring calibration

DFRobot Gravity Analog Rotation Potentiometer Sensor for Arduino - Rotation 300° The Gravity Analog Rotation Potentiometer Sensor for Arduino is a versatile Arduino rotation sensor that provides a practical way to add manual control to your electronic projects. With its 300-degree rotation range, this analog potentiometer module allows users to input varying voltage levels by simply turning the knob, making it perfect for applications like controlling LED brightness, adjusting motor speed, or creating interactive controls for DIY projects. The sensor features the standardized Gravity interface, ensuring easy plug-and-play connectivity with Arduino boards and compatible microcontrollers without requiring additional wiring or complex setup procedures. What makes this 300-degree rotation sensor particularly useful is its compatibility with both 5V Arduino systems and 3.3V platforms like Raspberry Pi, Intel Edison, Joule, and Curie. This versatility allows students and hobbyists to use the same sensor across different development platforms without worrying about voltage compatibility issues. The Gravity interface potentiometer provides analog output that can be subdivided into 1024 distinct levels, offering precise control for various applications. Whether you're building a smart cooling fan, creating an interactive control panel, or teaching basic analog input concepts, this potentiometer sensor offers a reliable and straightforward solution that's accessible to beginners while being versatile enough for more advanced projects. Features: 300-degree rotation range for precise analog control. Compatible with both 5V and 3.3V systems for versatile use. Gravity interface design for simple plug-and-play connection. Analog output can be divided into 1024 steps for fine adjustment. Works perfectly with IO Sensor Expansion Shield for Arduino. No additional library required for basic functionality. Compact design for easy integration into various projects.

DFRobot Gravity Analog TDS Water Quality Sensor/Meter for Arduino The DFRobot Gravity Analog TDS Water Quality Sensor is an Arduino-compatible sensor designed to measure the Total Dissolved Solids (TDS) in water, offering a practical way to monitor water cleanliness. This easy-to-use TDS sensor is ideal for domestic water testing, hydroponics, and other water quality applications, helping you build your own DIY water monitoring system. With a wide voltage input range (3.3V to 5.5V) and analog voltage output (0–2.3V), it is compatible with most 3.3V or 5V microcontrollers. Unlike traditional TDS pens, this sensor transmits real-time data to your control system. It uses an AC signal to reduce probe polarization, extending its lifespan and improving measurement stability. Waterproof and durable, the TDS probe can be immersed long-term, making it perfect for continuous water quality analysis. Important Guidelines Do not use the probe in water temperatures above 55°C. Avoid placing the probe too close to the container’s edge, as it may affect reading accuracy. While the probe head and cable are waterproof, the connector and signal transmitter board are not—handle with care to avoid water damage. Features Supports wide voltage input from 3.3V to 5.5V Outputs a 0~2.3V analog signal, compatible with both 5V and 3.3V controllers AC excitation source prevents probe polarization and enhances stability Waterproof TDS probe suitable for continuous immersion Easy to use with Arduino: plug-and-play design, no soldering required

DFRobot Gravity Analog Water Pressure Sensor Module The Gravity Analog Water Pressure Sensor is a simple yet powerful tool that helps you monitor water systems by detecting both the presence of water and measuring its pressure. This DFRobot sensor uses a standard Gravity 3-pin interface that makes it compatible with Arduino and similar microcontrollers. It works with 5V input voltage and provides a linear output voltage between 0.5V and 4.5V that corresponds to the pressure level. When used with a Gravity IO Expansion Shield, you can connect this sensor directly to your Arduino board without any complicated wiring, making it perfect for beginners and students working on water monitoring projects. This versatile liquid pressure monitor can be the foundation of many practical applications. By combining it with components like solenoid valves and water turbine generators, you can build complete smart water systems for homes, gardens, or farms. The sensor works like a stethoscope for water pipes, helping you diagnose water flow issues and monitor pressure levels in real-time. With its waterproof design, it can be used in various environments including indoor plumbing, outdoor water sources like rivers and lakes, and water storage tanks. This makes it an excellent choice for smart home control systems, Internet of Things (IoT) projects, and equipment monitoring applications where water pressure data is important. Features Pressure measurement range from 0 to 1.6 MPa for wide application possibilities High accuracy of 0.5% for reliable measurements in critical applications Waterproof rating of IP68 allowing use in fully submerged conditions Fast response time of less than 2.0 ms for real-time monitoring G1/4 thread with included G1/2 to G1/4 adapter for easy installation Operating temperature range from -20°C to 85°C for various environments Impressive service life of over 10 million measurements for long-term reliability DFRobot Gravity Analog Water Pressure Sensor Interfacing with Arduino Connection Diagram

DFRobot Gravity ENS160 Air Quality Sensor The Gravity: ENS160 Air Quality Sensor (SEN0514) is a cutting-edge device based on ScioSense's new ENS160 sensor chip, specifically engineered for comprehensive indoor air quality monitoring. This DFRobot sensor stands out with its ability to detect multiple IAQ data points including Total Volatile Organic Compounds (TVOC), equivalent carbon dioxide (eCO2), and Air Quality Index (AQI). The innovative TrueVOC™ technology, combined with metal oxide (MOX) technology, provides this environmental sensor with exceptional accuracy, rapid response times, and strong resistance to interference, making it reliable for everyday use in various settings. What makes this air pollution detector particularly user-friendly is its intelligent on-chip algorithms that process complex air quality data and deliver easy-to-understand environmental readings. Simply preheat the sensor for just 3 minutes before use to obtain quick and accurate measurements of your surrounding air quality. The Gravity ENS160 also features a built-in automatic baseline correction algorithm that ensures the air quality monitor maintains stable and consistent performance over extended periods. Whether you're creating an air purification system, environmental pollution detection setup, or integrating it into smart home automation, this versatile TVOC eCO2 monitor delivers reliable data through its simple I2C interface. Features Multiple IAQ outputs: TVOC, eCO2, and AQI for detailed air quality assessment. Less than 3 minutes warm-up time for faster data acquisition. Built-in intelligent algorithms for more accurate output readings. Anti-interference technology for reliable readings in various conditions. Easy integration with Arduino, Raspberry Pi, and other microcontrollers. I2C communication interface for simple connection and data transfer. Suitable for HVAC/ventilation system monitoring. DFRobot Gravity ENS160 Air Quality Sensor with Arduino Circuit Diagram

DFRobot Gravity Flexible Piezo Film Vibration Sensor Module The DFRobot Gravity Flexible Piezo Film Vibration Sensor Module is a versatile, Arduino-compatible sensor designed to detect vibrations, impact, touch, and bending with high precision. It features a flexible piezoelectric PVDF film with screen-printed Ag-ink electrodes and a polyester backing, making it highly sensitive and durable. When the film is flexed or tapped, it generates a high voltage (up to ±90V), making it suitable for triggering MOSFET or CMOS circuits directly. This piezo vibration sensor module supports both analog and digital outputs and connects easily using the Gravity 3-pin interface. It includes an onboard potentiometer to fine-tune sensitivity, allowing it to detect everything from subtle movements to strong impacts. With a wide dynamic range (0.001Hz–1000MHz), it's perfect for various projects, including motion detection, touch sensing, and impact-triggered systems.

DFRobot Gravity GP8403 2-Channel I2C DAC Module (0-10V) The Gravity 2-Channel I2C DAC Module (0-10V) is a versatile digital-to-analog converter that allows your microcontroller to generate precise analog voltage signals. This module features two independent output channels, each capable of producing voltage from 0V to 10V with 12-bit resolution (4096 levels), making it ideal for controlling analog devices, industrial equipment, or simulating sensor outputs. The simple I2C communication interface makes it compatible with Arduino, Raspberry Pi, micro:bit, and other popular development boards, requiring just two pins for communication plus power connections. Designed with practicality in mind, this DAC module includes convenient screw terminals for secure wiring, a power indicator LED, and a compact form factor that fits easily into your projects. The module operates on 7-12V DC power supply and provides stable output even in noisy environments. Whether you're building industrial automation systems, controlling motor speed, adjusting LED brightness, or creating test equipment, this DAC module offers the precision and reliability you need. The included sample code and libraries make it easy for students and hobbyists to get started quickly, while the robust design ensures it can handle demanding applications in educational labs or small businesses. Features Two independent 0-10V analog output channels with 12-bit (4096 level) resolution I2C communication interface (address 0x58 by default, changeable via jumper) Operating voltage: 7-12V DC with reverse polarity protection Output current: up to 10mA per channel Onboard voltage regulator for stable operation Compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers Applications Intelligent function signal generator Automatic controlling of lighting or fountain Automatic and quick transformation of small equipment Automatic debugger for electromechanical equipment Transformation of small test equipment

DFRobot Gravity Industrial Stainless Steel Submersible Pressure Water Level Sensor 0-5m This tough Industrial Stainless Steel Pressure Sensor is excellent for checking the level of water or other liquids in places like storage tanks, deep wells, or even small rivers. It can accurately measure liquid depths from 0 all the way up to 5 meters. Because it's made from strong stainless steel, it doesn't rust easily and you can place it directly into water, oil, or even slightly thick liquids without any worries about damage. It’s a very handy Submersible Level Sensor 0-5m that sends out an industry-standard 4-20mA Water Level Sensor current signal. This type of signal is commonly understood by many industrial control systems (PLCs) and other professional equipment. You can also easily connect this Gravity Pressure Level Sensor to microcontrollers like Arduino (usually with a simple converter module) for your own science projects or automatic systems, making it simple to monitor liquid levels precisely. Important Notes: Follow the power supply connection instructions carefully. Do not disassemble, drop, or strike the sensor. Avoid touching the diaphragm with sharp objects. The sensor works immediately after powering on but gives stable output after 30 minutes of preheating. Stop using if any abnormality occurs. Install the sensor vertically downward. Ensure the terminal is waterproof to prevent water entry. Submerge the probe properly, secure it in place, and keep it away from the water inlet. DFRobot Gravity Submersible Pressure Water Level Sensor with Arduino Circuit Diagram Dimensions Features Measuring Range: 0 to 5 meters water depth. Output Signal: Industry-standard 4-20mA current. Body Material: Tough 304 Stainless Steel shell. Waterproof: IP68 rated for full submersion. Accuracy: Precise readings with 0.5% Full Scale. Power Supply: Works with 12V to 36V DC.

DFRobot Gravity PH3 Gas Sensor (Calibrated)  I2C, UART and Analog This Gravity PH3 Sensor is a very useful device to find out the amount of phosphine gas around you. It's perfect if you're working on projects for factories, checking safety in mines, or just want to know the air quality in places like godowns or closed rooms. The sensor has a special part (electrochemical probe) that is already fine-tuned at the factory. This means you can quickly and accurately measure Phosphine Gas Sensor levels right out of the box, without needing to do any complex setup. It’s also made to be tough and reliable. You can easily connect this PH3 Sensor to popular electronics boards like Arduino, ESP32, or Raspberry Pi using the simple Gravity connector. It's flexible because it can send data through I2C, UART, or even as an analog voltage signal, whichever suits your project. The sensor also has smart features like automatically adjusting for temperature changes to keep the readings correct, and it can even set off an alarm if the gas level gets too high. It's built to last for over two years, making it a good choice for your gas sensing needs. Features Gas Detected: Phosphine (PH3) Measures Up To: 0 to 1000 ppm (parts per million) Output Types: Analog, I2C, and UART Ready to Use: Factory calibrated (already set up) Connects To: Arduino, ESP32, Raspberry Pi, etc. Good Quality: Very sensitive and doesn't get easily disturbed Long Life: Can work for more than 2 years (in air) Power Needed: 3.3 Volts to 5.5 Volts DC I2C Setup: Has 32 I2C addresses you can choose from

DFRobot Gravity Tipping Bucket Rainfall Sensor - I2C & UART The DFRobot Gravity Tipping Bucket Rainfall Sensor is a reliable and convenient tool designed for precise rainfall measurement in various applications. Based on the tipping bucket rainfall principle, this rainfall measurement sensor provides accurate precipitation data in millimeters along with system operating time information. What makes this sensor particularly effective is its thoughtful design - it contains no electronic components inside the measurement mechanism and features a hollow bottom that allows rainwater to automatically drain away. These design choices significantly enhance the stability and sensitivity of the sensor, making it ideal for continuous outdoor monitoring in weather stations, environmental research, or agricultural applications. This versatile tipping bucket rain gauge supports both I2C and UART data outputs, making it compatible with a wide range of popular platforms including micro:bit, Arduino, ESP32, and Raspberry Pi. Setting up a complete rain monitoring system is straightforward thanks to the integrated easy-to-use Gravity interface and the provided ready-to-go libraries. The Arduino rainfall detector works by collecting rainwater through its top inlet, which then flows into the tipping bucket through a funnel. When sufficient water accumulates, the bucket tips over, generating a pulse signal that allows the controller to calculate rainfall amount. This reliable mechanism makes the sensor perfect for delivering high-quality rainfall data for weather station equipment setups, environmental monitoring stations, or smart farming applications. Note: The signal adapter board is not waterproof. Do not expose the signal adapter board to rain. Features Working voltage range of 3.3V to 5.5V DC for flexible power options. Low current consumption of less than 3mA for efficient operation. Precise measurement resolution of 0.28mm for accurate rainfall data. Wide operating temperature range from -40°C to 85°C for all-weather use. Tipping bucket size: 118mm × 59mm × 80mm for effective rain collection. Signal adapter board dimensions: 32mm × 37mm for compact installation. Includes rainfall sensor, signal adapter, and Gravity 4-pin connection cable. Circuit Diagram of Gravity Tipping Bucket Rainfall Sensor and Arduino Uno