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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Grove - 3-acces accelerometer MMA7660FC - I2C - Seeedstudio 101020039
Module with 3-axis accelerometer, based on MMA7660FC chip . Allows measurement of 3-axis acceleration within ± 1. 5 g. The module communicates through the I2C interface,...
Index: SEE-15579
Index: SEE-15579
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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
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
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
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
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
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
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
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
Grove - MMA7660FC 3-axis digital accelerometer I2C
Module with 3-axis accelerometer based on MMA7660FC chip with digital I2C output and Grove connector. The MEMS sensor has a low power consumption and low profile. The module...
Index: SEE-15444
Index: SEE-15444
ADXL343 QT 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
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
Gravity - LIS2DW12 - 3-axis accelerometer ±2g/±4g/±8g/±16g - I2C - DFRobot SEN0409
Gravity module in a form of 3-axis accelerometer , which allows to measure linear acceleration. It has a built-in LIS2DW12 chip (belonging to the popular LIS series) and...
Index: DFR-19915
Index: DFR-19915
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
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
Triple Axis Accelerometer Breakout - LIS3DH - SparkFun SEN-13963
Sensor LIS3DH is a 3-axis digital accelerometer. It allows you to measure acceleration in the configurable ranges. It communicates via the I2C or SPI bus, it is powered from a...
Index: SPF-08064
Index: SPF-08064
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
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
Gravity - BMI160 6DoF IMU - 3-axis accelerometer and gyroscope - DFRobot SEN0250
A 6-axis inertial motion sensor featuring the Bosch BMI160 MEMS chip. The module integrates a 16-bit 3-axis accelerometer and a 3-axis gyroscope . It is used to measure...
Index: DFR-19380
Index: DFR-19380
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
Grove - 3 Axis Digital Accelerometer 16g Ultra - Low Power (BMA400)
Grove module 3-axis ±16 g low power digital accelerometer. It is a 12-bit digital three-axis sensor that detects acceleration and movement. Based on a BMA400 chip. Powered by...
Index: SEE-14739
Index: SEE-14739
MSA311 - triple axis accelerometer - Adafruit 5309
Three axis accelerometer with 14-bit resolution from Adafruit. It allows you to measure acceleration in three axes in the range: ± 2g/4g/8g/16g . For communication it uses...
Index: ADA-20799
Index: ADA-20799
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
Piezoelectric vibration sensor - 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
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.