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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Green Wheels - 2 pieces - for motor with shaft D - Kitronik 2593-D
Index: KTR-21412
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Step-Down Voltage Regulator D24V25F9 - 9V 2,5A - Pololu 2854
Index: PLL-03158
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Accelerometers
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ADXL345 3-axis I2C/SPI digital accelerator - module
Sensor for measuring acceleration in three axes in the range +/- 16 g. The module is powered with the voltage from 3 to 5 V, it has the voltage regulator and is communicating...
Index: MOD-01912
Index: MOD-01912
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
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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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
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
LSM6DSO - 3-axis accelerometer and I2C/I3C/SPI gyroscope - Pololu 2798
The LSMDDSO sensor from Pololu is the successor to the older LSM6DS33 module and is a combination of a 3-axis accelerometer and a gyroscope. It allows you to measure 6...
Index: PLL-22026
Index: PLL-22026
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
Grove - Collision Sensor - collision and vibration sensor
Collision sensor from Grove. It detect collision and vibration. It has an additional external circuit, to reduce the effect of ambient noise. The module is supplied with the...
Index: SEE-11300
Index: SEE-11300
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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
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
SparkFun 6 DoF IMU - ISM330DHCX - 3-axis accelerometer and gyroscope - SparkFun SEN-19764
The board is equipped with the ISM330DHCX system containing a 3-axis accelerometer and a 3-axis gyroscope. The module allows you to measure linear acceleration in the range of...
Index: SPF-21821
Index: SPF-21821
9DoF IMU Breakout - ISM330DHCX, MMC5983MA - Qwiic - SparkFun SEN-19895
SparkFun Qwiic 9DoF IMU Breakout sensor combines a high-performance digital ISM330DHCX accelerometer, a gyroscope and a highly sensitive three-axis magnetometer MMC5983MA ....
Index: SPF-21961
Index: SPF-21961
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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.