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Gravity - accelerometers and gyroscopes

Products: 7
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DFRobot Gravity - vibration sensor

A simple vibration sensor with digital output. It is supplied with the voltage from 3.3 V to 5 V, it works with Arduino modules.
Index: DFR-04711
Index: DFR-04711
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Regular price €2.67 Price €2.67

DFRobot Gravity - tilt sensor

A simple tilt sensor with digital output. It is powered with the voltage from 3.3 V to 5 V, it works with Arduino modules.
Index: DFR-04279
Index: DFR-04279
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Regular price €1.84 Price €1.84

DFRobot Gravity SEN0224 - LIS2DH - 3-axis I2C accelerometer

Sensor for measuring acceleration in three axes in the range +/- 2 g , +-4 g, +g -8 or +-16 g . The module is powered with the voltage from 3.3 to 5 V, it has a voltage...
Index: DFR-08831
Index: DFR-08831
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Regular price €5.09 Price €5.09

DFrobot Gravity 10DOF AHRS - 3-axis accelerometer, gyroscope and magnetometer

The sensor is a combination of 3-axis gyroscope, accelerometer and compass. It allows you to measure acceleration, magnetic field and angular velocity in the configurable...
Index: DFR-13155
Index: DFR-13155
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Regular price €26.74 Price €26.74

DFRobot Gravity - digital magnetic field sensor

Digital magnetic sensor can detect the magnetic object near it. The supply voltage is from 3.3 V to 5 V.
Index: DFR-11274
Index: DFR-11274
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Regular price €2.91 Price €2.91

DFRobot Gravity: Digital shake sensor

The shock sensor reacts to movement in a certain direction, so it can detect, for example, a hand movement. It is equipped with a vibration switch, spring type which serves to...
Index: DFR-13294
Index: DFR-13294
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Regular price €2.73 Price €2.73

Gravity - 9DOF sensor BMX160 + temperature and pressure sensor BMP388 - I2C- DFRobot SEN0252

The module is equipped with two BMX160 and BMP388 sensors. BMX160 is a 9-axis sensor which allows to measure the acceleration in the ranges ± 2 g / ± 4 g / ± 8 g / ± 16 g...
Index: DFR-15712
Index: DFR-15712
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Regular price €20.92 Price €20.92

Types of position, acceleration and speed sensors

When designing a mobile robot, a computer control interface, or an intriguing hand-controlled gadget, it's worth taking a moment to consider what type of sensor will work best for the application. For the simplest devices, which only need to detect the fact of vibration or tilt of the housing (without any measuring function, such as determining the exact orientation relative to the Earth's surface), it is best to use a contact sensor. An example of such solution are the DFR-04711 modules available in our offer - vibration sensors with digital output. Vibrations short-circuit a small contact inside the sensor housing - so the microcontroller can detect vibrations using an external interrupt or a hardware timer operating in the input pulse capture mode. Shock sensors (DFR-13294) and tilt sensors (DFR-04279), which are also compatible with any microcontroller (although they can also be used in analog circuits and devices based on classic digital circuits), work on a similar principle.

MEMS accelerometers and gyroscopes

Microelectromechanical system (MEMS) sensors have taken over the market for solutions designed to measure acceleration and rotational speed, gesture detection, detecting the fall of people or free-falling objects, spatial navigation of drones and mobile robots, and many others. Every modern mobile device has sensors such as the basic 3-axis MEMS accelerometer, which is used to detect acceleration, vibrations (e.g., steps), and gestures (in some applications). An example of such a chip can be the integrated 3-axis digital accelerometer with I2C interface - LIS2DH - which is the heart of the DFR-08831 module. While accelerometers respond to linear accelerations in three axes (X, Y and Z), gyroscopes allow to determine the speed components in these axes. Interestingly, the fusion of data from both types of sensors significantly increases the accuracy of determining kinematic parameters (acceleration and velocity) - a technique that becomes particularly important in flying machines and balancing robots.

Gravity Ecosystem - multi-parameter sensor sets for flight controllers (and more)

The Gravity sensors produced by DFRobot also include magnetic field sensors - in the case of the DFR-13155 module, in addition to a 3-axis magnetometer (compass), the user can also take advantage of a 3-axis accelerometer and a 3-axis gyroscope. There is even a BMP280 digital barometer with temperature measurement function. The combination of inertial data with high-resolution atmospheric pressure measurement (to determine the height above the ground) allows you to accurately track the position and all major flight parameters of drones and flying robots. A similar set of functionalities is offered by another model of the 10 DOF sensor from the DFRobot Gravity series with catalog designation DFR-15712. In this case, the role of inertial sensor is performed by BMX160, while the integrated BMP388 sensor is responsible for temperature and pressure measurements.