Accelerometers, gyroscopes and inertial navigation systems (IMU) are small, multi-purpose sensor devices that appear in an increasing number of electronic devices in our daily environment, including in mobile phones, game consoles, toys, self-balancing robots, as well as in Motion Capture - the technology of human body movement analysis used not only in medicine. Accelerometers are mainly used to measure the linear acceleration of an object, gyroscopes to measure its angular velocity and orientation, and the IMU systems are an integrated combination of a gyro and accelerometer, providing the control system with all the necessary data about the movement and position of the object. The implementation of such measurement functions is also possible thanks to our Grove accelerometers and gyroscopes.
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Accelerometers
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MPU-6050 3-axis accelerometer and I2C gyroscope - DFRobot module
Sensor for measuring acceleration and angular velocity in three axes. It is a combination of 3-axis accelerometer and gyroscope. It is characterized by simple operation, it...
Index: DFR-03888
Index: DFR-03888
A simple tilt sensor with digital output. It is powered with the voltage from 3.3 V to 5 V, it works with modules of Arduino and Raspberry.
Index: SEE-11358
Index: SEE-11358
Digital compass HMC1022 - I2C/UART GY-26
The digital compass module based on Honeywell HMC1022 , which works on the principle of using magnetoresistance measuring the Earth's magnetic field in order to obtain the...
Index: GRL-14543
Index: GRL-14543
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LSM6DS33 - 3-axis accelerometer and I2C/SPI gyroscope - Pololu 2736
Sensor allows you to measure 6 variables: acceleration X, Y, Z and angular velocity X, Y, Z. It is a combination of 3-axis accelerometer and gyroscope. It communicates via the...
Index: PLL-05331
Index: PLL-05331
The sensor is a combination of 3-axis gyro, accelerometer and compass. Allows you to measure acceleration, magnetic field and angular velocity in the configurable ranges....
Index: WSR-08298
Index: WSR-08298
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
MinIMU-9 v5 9DOF - accelerometer, gyroscope and magnetometer I2C - Pololu 2738
The sensor allows to measure 9 sizes: acceleration X, Y, Z magnetic field X, Y, Z and angular velocity X, Y, Z. It is a combination of 3-axis accelerometer and gyroscope...
Index: PLL-05528
Index: PLL-05528
BMA220 3-axis I2C digital accelerator - DFRobot module
Sensor for measuring acceleration in three axes in the range: ± 2 g, ±4 g, ±8 g / ±16 g. Powered with the voltage of 2.0 V to 3.6 V, it is characterized by small size, low...
Index: DFR-02987
Index: DFR-02987
DFRobot Gravity - vibration sensor with piezoelectric membrane
Analog vibration sensor with piezoelectric membrane. It is powered with the voltage from 3.3 V to 5 V, it works with Arduino modules.
Index: DFR-04713
Index: DFR-04713
LIS3DH 3-axis I2C/SPI digital accelerometer - STEMMA QT - Adafruit 2809
Sensor for measuring acceleration in three axes in the range: ± 2g, ±4 g, ±8 g / ±16 g. Powered with the voltage from 3 V to 5 V. It communicates over the I2C or SPI bus.
Index: ADA-05295
Index: ADA-05295
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
FlexiForce Pressure Sensor - 25lbs - SparkFun SEN-09196
Piezoelectric vibration sensor, used for measurement of touch, vibration, shock and flexibility. A small AC voltage and high voltage up to 90 V, it occurs when the foil moves...
Index: SPF-10115
Index: SPF-10115
AltIMU-10 v5 - gyroscope, accelerometer, compass and I2C 3-5V altimeter - Pololu 2739
Sensor for measuring acceleration, magnetic field, angular speed and altitude. It is a combination of 3-axis accelerometer and gyroscope LSM6DS33, LIS3MDL magnetometer and...
Index: PLL-05728
Index: PLL-05728
Piezoelectric sensor of vibration with mass - SparkFun SEN-09197
Piezoelectric vibration sensor, used for measurements of touch, vibrations, hits and flexibility. A small AC voltage and high voltage of up to 90 V, it occurs when the foil...
Index: SPF-10116
Index: SPF-10116
Grove - 3 Axis Analog Accelerometer ADXL335
The Grove series module equipped with the ADXL335 is a small, thin 3-axis accelerometer with signal voltage outputs. It measures acceleration with a minimum full scale range of...
Index: SEE-14738
Index: SEE-14738
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
PiMoroni LSM303D - 3-axis accelerometer and I2C magnetometer
The module is a combination of 3-axis digital gyroscope and compass. It allows you to measure acceleration and magnetic fields in the configurable ranges. It communicates via...
Index: PIM-12678
Index: PIM-12678
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
Tilt / shock sensor - Iduino SE059
The tilt sensor detects changes in position. It can work as a shock sensor. The m odule for communication uses the digital output . It w orks with voltage of 5 V.
Index: OST-14325
Index: OST-14325
MPU-6050 3-axis accelerometer and I2C gyroscope module - SparkFun SEN-11028
Sensor for measuring acceleration and angular velocity in three axes. It is a combination of 3-axis accelerometer and gyroscope. It is characterized by simple operation, it...
Index: SPF-01632
Index: SPF-01632
MMA8452Q 3-axis I2C digital accelerator module - SparkFun SEN-12756
Sensor for measuring acceleration in three axes in the range: ± 2g, ±4 g or ±8 g. Powered with the voltage of 1.95 V - 3.6 V, it is characterized by small size, low energy...
Index: SPF-01771
Index: SPF-01771
ADXL343 3-axis I2C / SPI digital accelerator - module - Adafruit 4097
Sensor for measuring acceleration in three axes in the range of +-2g/4g/8g/16g. The module is supplied with the voltage from 2 V to 3.6 V, the voltage regulator is...
Index: ADA-13948
Index: ADA-13948
LSM6DSO - 3-axis accelerometer and I2C/SPI gyroscope - SparkFun SEN-18020
PCB with 6DoF LSM6DSO chip containing accelerometer and gyroscope along with 9 kB FIFO buffer and embedded processing interrupt functions. The device can detect shock, roll,...
Index: SPF-19708
Index: SPF-19708
ADXL335 3-axis analog accelerometer - SparkFun SEN-09269
Sensor for measuring acceleration in three axes in the range of ± 3 g. Powered with the voltage from 1.8 V to 3.6 V; it consumes only 320 uA of the current. The output signal...
Index: SPF-02404
Index: SPF-02404
Accelerometers - the direct measurement of linear acceleration
3-axis accelerometers measure linear acceleration in three axes (X, Y, Z). A uniaxial accelerometer allows you to measure acceleration in any indicated direction. This is used in missiles, homing missiles, trains, and other applications where the object moves in one specific direction. By knowing the acceleration, velocity and time, the measurement system can calculate the distance travelled by the object. Due to the nature of the influence of the Earth's gravitational field, the acceleration of the earth is constant but also measurable by accelerometers - this will be noticeable when you place the accelerometer with the housing perpendicular to the ground of the Earth, and the acceleration will then be measured only in one axis (e.g. Z, for the X-axis and Y will be zero), while when the accelerometer is deflected by an angle different than 90 �, the measured acceleration, although it will be constant, its value will be further co-created by the value for the Z-axis and the non-zero values of the components for the X and Y axes.
Interfacing accelerometers with Arduino boards
On most of the accelerometer boards offered at our store, the output should be connected to the analogue input on the Arduino board. Grove modules require a 3.3V or 5.0V power supply. When choosing an accelerometer to suit your project's needs, you must consider the maximum value of linear acceleration that the accelerometer can measure. For example, for a small riding robot, an accelerometer with a maximum range of linear acceleration of 2 g (twice the acceleration of gravity) will be appropriate, and for a rocket model, an accelerometer with a range of 16 g will be appropriate. In addition to the accuracy of the measurement reading, which is determined by the bit resolution of the analogue-to-digital converter included in the structure of the microcontroller with which the accelerometer works, it is worth knowing that the larger the measuring range of the accelerometer, the greater the measurement accuracy. If you choose an accelerometer with a too-small measuring range for your project, then you may notoriously obtain information about the reading off-scale, which will make it impossible to correctly determine the acceleration of the object.
What other factors are worth paying attention to when buying an accelerometer?
When using accelerometers, gyroscopes or IMU systems, to achieve and maintain the required position of an object in space, other factors may affect the measurement results. The main problem is the sampling rate of the analogue-to-digital converter built into the microcontroller that receives the signal from the gyroscope through the analogue input. Due to the structure of the Sample & Hold system, the microcontroller "needs" a certain amount of time to measure and store the measurement result, some measurement data is lost during each holding cycle of the previously measured voltage signal. One of the most popular methods to partially compensate for this problem is the use of the Kalman filter. Another factor influencing the accuracy of the measurement is temperature changes, to which the sensors may be particularly sensitive, depending on the quality of the structure, including the term kinetics of the elements that the sensor is made of. Most MEMS sensor application notes describe the effect of temperature on the sensor output signal.