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

Gravity: I2C ADS1115 The 16-Bit ADC Module is an analogue-to-digital converter module for Arduino and Raspberry Pi. This module uses 16-bit ADC ADS1115 and is powered by 3.3 ... 5V. DFRobot DFR0553

Module with a button and green LED backlight. The board is equipped with a Gravity connector and communicates via a digital interface. DFRobot DFR0785-G

A 24-channel input/output port expander module controlled by an I2C interface. It was based on the CH423 chip and equipped with a Gravity connector. DFRobot DFR0979

DC Micro motor module with metal gear with a gear ratio of 30:1. The motor is connected to the board containing the driver. DFRobot DFR0399

Set with the ADC HX711 transducer module and a pressure sensor in the form of a tensometric beam. It communicates via the UART interface. It allows you to build a simple home scale. DFRobot SEN0160

A sensor that detects the concentration of nitrogen dioxide. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0471

Heart rate measurement module compatible with Arduino and Raspberry Pi (Gravity: Heart Rate Monitor Sensor For Arduino). It uses PPG technique, which in a simple and cheap way is able to measure the changing volume of blood. DFRobot SEN0203

Gravity: Digital 10A Relay Module is a module with 10A 35VAC / 30VDC relay compatible with devices with control signals in the range of 2.8 ... 5.5V. DFRobot DFR0473

A set with a temperature sensor based on the DS18B20 system in the form of a waterproof measuring probe, a sensor adapter and a cable. Communication via the 1-Wire interface. DFRobot KIT0021

NFC module with built-in antenna on the board. The module has a Gravity connector. Memory communication can be done through one of the serial interfaces: UART or I2C. DFRobot DFR0231-H

Set with a measuring module and a probe for measuring the pH of wet soil and food products. The module is powered with the voltage of 5 V and has an analog output with a voltage range from 0 to 4 V. DFRobot SEN0249

I2C multiplexer module with TCA9548A system. Allows you to connect up to 8 devices. The system works like a gateway - it transmits I2C interface data to one of the 8 main busses. This allows you to connect up to 8 devices with the same address. DFRobot DFR0576

Sensor for detecting the distance, intensity and frequency of light (lightning) within a radius of 40 km. The module enables weather enthusiasts to measure data about local storms. DFRobot SEN0290

Module with a bistable button and white LED backlight. The board is equipped with a Gravity connector and communicates via a digital interface. DFRobot DFR0785-W

4-digit, 8-segment LED display module with 8-level brightness adjustment. Communication via the I2C interface. DFRobot DFR0645-G

Current-to-voltage converter module designed for devices with a current signal output. It allows linear conversion of current signals from 0 to 25 mA into voltage signals from 0 to 3 V. DFRrobot SEN0262