Gravity: I2C 3.7V Li Battery Fuel Gauge - charge flow control

This encoders are designed for DFRobot 3PA and AWD Rovers. It can give you the rotation degree of the wheels. Encoder uses non-contact method to convert the angular displacement signals. Best fit with Micro DC Geared Motor. SEN0038

Analog pH Meter Pro (SEN0169)

SEN0017

This V2 Rotation Sensor  is arduino compatible multi-ring rotation sensor. It is based on multi-turn precision potentiometer. It can rotate upto 10 laps. DFR0058

Module with Hall sensor, allows for magnetic field detection, can be used to measure angle of rotation, displacement, mechanical vibrations, etc. The module has a connector in accordance with the Gravity standard. DFRobot SEN0185

Vibrating sensor module, Plug & Play, omni-directional, designed for switching over low-current circuits. DFRobot DFR0027

A set of elements intended for people who want to start their adventure with programming and electronics. Its main element is the DFRduino Mega 2560 tile (compatible with Arduino MEGA). The set consists of 31 elements. DFRobot KIT0013

The arduino turbidity sensor detects water quality by measuring level of turbidity. It is able to detect suspended particles in water by measuring the light transmittance and scattering rate which changes with the amount of total suspended solids (TSS) in water. SEN0189

Expansion board for Arduino, allows easy connection of XBee modules, has separate outputs for I2C, SPI and UART buses. The built-in 3.3V voltage stabilizer and operating mode switch make it easier to program the Arduino when the XBee module is connected to the sockets. DFRobot DFR0265

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

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

Starter kit with Arduino. The kit includes the DFRduino Uno R3 board and 12 of the most popular components and sensors. The set includes an illustrated manual with sample projects. DFRobot KIT0111

Switch module with an interlock. DFRobot DFR0423

A set of 27 sensors with Gravity connectors designed for Arduino. It contains a package of the most popular DFRobot sensors, such as light, gas, sound, tactile sensors, distance sensor and accelerometer. DFRobot KIT0011

Audio module with 8 Ohm loudspeaker and 8002B amplifier. It can be used as a buzzer and also play high-quality sound. The volume is controlled by a potentiometer. DFRobot FIT0449