DFRobot Gravity - 4-pin adapter for sensors

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

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

Gravity sensor adapter with 3-pin terminal connector. There are two 10 kΩ pull-up and pull down resistors on the board, set with a jumper. DFRobot DFR0055

Module with blue LED, digitally controlled. Perfect for people starting to play with Arduino. Equipped with a Gravity interface. DFRobot DFR0021-B

Module with red LED, digitally controlled. Perfect for people starting to play with Arduino. Equipped with a Gravity interface. DFRobot DFR0021-R

Module with white LED, digitally controlled. Perfect for people starting to play with Arduino. Equipped with a Gravity interface. DFRobot DFR0021-W

Gravity: I2C 12-Bit DAC is a module with 12-bit DAC and built-in EEPROM memory. The module is powered by 3.3 ... 5V for communication used by the I2C interface. DFRobot DFR0552

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

Gravity: I2C 3.7V Li Battery Fuel Gauge is a module for monitoring the parameters of the Li-ion battery allowing for precise measurement of the flow of charge to / from a 1-source source with an input voltage of 2.5-4.2V. DFRobot DFR0563

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: UART MP3 Voice Module is an MP3 sound player module with a built-in 8 MB memory. It is powered by 3.3-5V and controlled by the UART interface. DFRobot DFR0534

Gravity: Analog Sound Sensor is a sound sensor with Gravity analogue output. The module can be supplied with 3.3 ... 5V voltage. DFRobot DFR0034

Module with MLX90614-DCI sensor for non-contact temperature measurement in the range from -70℃ to 270℃. I2C communication. DFRobot SEN0263

Micro: Circular RGB LED is an expansion board designed for use with the micro: bit module. It has been equipped with 24 RGB LEDs, a buzzer and a microphone. The board is supplied with voltage in the range of 3.5 ... 5 V. DFRobot ROB0150

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

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