DFRobot Gravity - 4-pin adapter for sensors

2x16 character LCD display. It can display the font in any color from the RGB palette. Communication via the I2C interface. The module has a lead compliant with the Gravity standard. DFRobot DFR0554

Gravity: IO Expansion & Motor Driver Shield is an Arduino compatible expansion board that provides digital I / O ports, analog I2C, SPI and UART interfaces, as well as a DC motor driver. DFRobot DFR0502

Nano I / O Shield for Arduino Nano is an expansion board for Arduino Nano that provides digital, analog pins, power inputs and a connector for the Bluetooth module. DFRobot DFR0012

Professional pH measurement set with an industrial silver chloride electrode (Ag/AgCl), the measurement in the range from 0 to 14 pH is converted into voltage with a linear characteristic. DFRobot SEN0169-V2

A sensor that detects the concentration of hydrogen chloride. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0474

Digital signal isolator for communication via the Gravity I2C interface. It allows you to isolate the I2C digital signal and provide isolated power to the sensor module. DFRobot DFR0565

Earth humidity sensor with analogue output, supplied with 3.3 to 5.5 V voltage with Gravity connector. DFRobot SEN0193

Gravity: Analog TDS Sensor / Meter is an analog water purity measurement module. It is powered by 3.3 ... 5.5V voltage and has an analogue output interface. Module compatible with Arduino. DFRobot SEN0244

Module with a buzzer (without generator) controlled by a digital interface. It allows you to generate simple sounds by changing the frequency of the control signal. DFRobot DFR0032

Module with MOSFET and a Gravity connector. It allows you to easily connect and control the voltage from 5V to 30V and the current up to 2.5A. DFRobot DFR0643

BME280 integrates onboard temperature sensor, humidity sensor and barometer. It provides both SPI and I2C interfaces; and can be widely used in environmental monitoring, story height measurement and Internet of Things (IoT) control and so on. SEN0236

Waterproof soil moisture sensor with analog output. The probe has a pointed tip, which allows it to be easily inserted into the ground. It is supplied with the voltage from 3.3V to 5.5V. DFRobot SEN0308

A set of 10 cables, 30 cm long, compliant with the Gravity standard. DFRobot FIT0513

Micro:Mate is an expansion board for the micro: bit development module. It provides six 3-pin connectors with I/O outputs, a 3.5mm audio jack connector and is powered from a 5V microUSB connector. DFRobot DFR0518

Module with green LED, digitally controlled. Perfect for people starting to play with Arduino. Equipped with a Gravity interface. DFRobot DFR0031-G

Ring light with 12 RGB diodes WS2812B type controlled by serial signal. The module can be powered with the voltage from 3.3 V to 5 V, only one signal line is required to control it. DFRobot DFR0888-12