Series transducers DFRobot Gravity are characterized by similar connectors that are compatible with the Gravity plate DFRobot IO Expansion Shield for Arduino
Shield for Arduino, which extends the I/O pis capabilities. It has i.a. led out each pin with a pair for power supply, possibility to turn on the voltage converter of 3.3 V, a separate connector for I2C, SPI interfaces, and a slot for XBee modules.
The sensor uses the Doppler effect to detect movement of objects. Through the use of microwaves instead of IR, you can detect objects that reflect the waves in the range of micro. In addition, the sensor does not depend on the ambient temperature, it also determines inanimate objects.
Module with multiplexer that allows you to connect 8 different digital I2C buses to one interface, for each, there are separate pins SDA (bus of data line) and SCL (clock line of the bus). The device operates with a supply voltage from 3 V to 5 V.
Module EEPROM from series Gravity, allows for memory expansion on the data with 256 KB in Arduino. Communication via the I2S interface. It saves data during a power outage. The EEPROM is characterized by an almost infinite number of read cycles, and very low energy consumption.
Module from the Gravity series enables the processing of the current signal from 0 mA to 25 mA into a voltage signal from 0 V to 3V. The sensor may be connected to the Gravity expansion module of pins V7.1. It is supplied with the voltage from 3.3 V to 5 V.
Digital isolator of signal I2C ffrom series Gravity. It protects the sensors from electrical interferences causing a read error through the isolation of I2C signal and providing isolated power to the sensor.
The sensor determines the liquid level without dipping into the liquid. Due to the lack of contact with the liquid, the module is suitable for level measurement of hazardous substances such as strong acid, bases, toxic substances and containers under high pressure.
Module MAX31855K together with thermocouple allows to measure high temperatures with high accuracy. It operates in the range from 0 °C to 800 °C with a supply voltage from 3 V to 5.5 V. For communication, it uses an I2C interface.
The sensor determines the concentration of CO2 (carbon dioxide) in the air. It is equipped with digital and analog output that works with voltage of 5 V. The kit includes a cable to connect with DFRobot IO Expansion Shield.
The module is based on the single-wire 8002 amplifier with digital interface. It can work as a simple buzzer or play music. The volume is adjustable with built in potentiometer. The supply voltage ranges from 2 V to 5.5 V.
The device is used to measure soil moisture by the capacitive detection. It has a built-in voltage regulator which provides an operating voltage range from 3.3 V to 5 V. It is equipped with the Gravity connector.
High-precision sensor that measures the concentration of CO2 (carbon dioxide) in the air. Equipped with analog output, works with a voltage from 4.5 V to 5.5 V. Operates in the range from 0 to 5000 ppm. The kit includes a cable to connect with cap DFRobot IO Expansion Shield.
Analog ambient light sensor PT550 compatible with Arduino and Raspberry Pi. The sensor allows to determine the light density and reflects the analog voltage signal back to Arduino. The range of the light ranges from 1 lux to 6000 Lux. Supply voltage is from 3.3 V to 5 V.
A set of 9 popular modules compatible with Arduino boards. It has 7 sensors, including: light, temperature, touch, rotation, vibration sensors, and the button and the module with the LED. Each sensor has a corresponding cable with female connectors adapted to DFRobot IO Expansion Shield.
The DFRobot module is equipped with a sensor of humidity, temperature and pressure, powered with the voltage from 3.3 V to 5 V with the I2C and SPI interface. Measuring range: temperature: -40 °C to 85 °C, humidity: 0 %RH to 100 %RH, pressure: from 300 hPa to 1100 hPa.
Module with relay that allows for the control of the actuators consuming the current of up to 12 A for the voltage of 125 V or 10 A for 277 V through the ports of the microcontroller. The kit includes a cable adapted to DFRobot IO Expansion Shield.