Gravity: LED Button - module with a button and LED backlight (blue)

A digital shock sensor that detects hand shake. The spring-type vibration switch allows you to output pulses when the user shakes once in a certain direction. DFRobot SEN0289

Measurement module for dissolved oxygen in water. It allows you to determine the level of water quality. The set includes a measuring module and a probe. DFRobot SEN0237-A

Module with an IR transmitter operating at a frequency of 38kHz. The module is supplied with the voltage from 3 to 5V. FRobot DFR0095

The liquid flow sensor is made of a plastic body, a flow rotor and a Hall sensor. DFRobot SEN0217

Analog pH Meter Pro (SEN0169)

Analogue temperature and humidity sensor module based on SHT30 sensor. It is characterized by high reliability and stability with low energy consumption. It is compatible with 3.3V and 5V controllers, such as Arduino, micro:bit, ESP32. DFRobot DFR0588

A set of 5 modules with a bistable button and LED backlight. The boards are equipped with a Gravity connector and communicate via a digital interface. DFRobot DFR0789

A sensor that detects the oxygen concentration. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0465

Keyboard module with five colored buttons. The board is equipped with a Gravity connector and has an analog output. Powered with the voltage of 3.3 V or 5 V. DFRobot DFR0075

Module with an analog light sensor. It consists of a photoresistor and a LED. Equipped with a Gravity connector. DFRobot DFR0022

High temperature measuring kit. It consists of a signal conversion module with a range of -270°C to 1372°C and a K-type thermocouple probe with a range of up to 800°C. I2C communication DFRobot DFR0558

LM35 analog temperature sensor module for Arduino. DFRobot DFR0023

Module with a miniature DC motor. No additional controller is required to start the engine. The module is controlled by the PWM signal. DFRobot DFR0411

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

The expansion board is designed for DFRduino M0 or Bluno M0 sets. The board has 31 GPIO pins (including 6 PWM and 6 ADC inputs), UART, I2C and SPI interfaces. The pins are color coded according to the Gravity standard. DFRobot DFR0412

Gravity: Digital Crash sensor is a microswitch module (left) often called a limit switch. The module is powered by 5V voltage and has a digital two-state output. DFRobot SEN0138-L