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Questions tagged [accelerometer]

A sensor to measure acceleration.

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1answer
20 views

different modes for analyzing the acceleration in an AC motor [on hold]

I searched a lot on the internet but I still can't understand what the different modes are for analyzing the acceleration and which one is better. I need the data from an accelerometer for condition ...
5
votes
1answer
64 views

Identify an Accelerometer in an Xfinity XR11 Remote

part identification question here. It comes from an Xfinity XR11 Remote. It’s used to detect acceleration when picking up the remote. The footprint and part/trace placement heavily matches what I’d ...
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0answers
16 views

OSError: [Errno 121] Remote I/O error or pigpio.error: 'I2C read failed' on MPU6050

So I use MPU6050 to get acceleration from stepper motor linear rail movement(steper motor working in thread, I use pigpio for the motor) by make the MPU6050 can work on threading and it can show data ...
1
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1answer
43 views

Compensate centrifugal force in accelerometer measurements

I'm working on a project that includes counting the revolutions of a cylinder connected to an engine. This engine runs at a minimum of 5 revolution per second and a maximum of 9 revolution per second. ...
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1answer
35 views

why gyroscope sample rate can be changed by frequency, while accelerometer sample rate cannot?

This is from the mpu6050 datasheet. In the datasheet, gyroscope sample rate can be changed by frequency, but accelerometer cannot. Why this happens?
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0answers
14 views

How does “Tilt on Wrist Interrupt is detected with one accelerometer axis” work?

bma456 has a tilt-on-wrist detection interrupt. When ever the device is rotated more than a minimum of 12 degrees to gravity, an interrupt interrupt is generated. In the data sheet, it says "The Tilt ...
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4answers
61 views

Acceleration in the Z direction in Earth frame regardless of orientation

I have acceleration readings on 3 axes from an accelerometer, I'm trying to find a way to get the acceleration in the vertical direction independent of the current orientation of the sensor. I have ...
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2answers
144 views

STM32F722ZE SPI communication with LSM6DS33 using HAL

For a long time I can not read the correct data from the LSM6DS33 control register (accelerometer + gyroscope). As I read in the datasheet, the control register address WHO_I_AM is 0x0f. In order to ...
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0answers
110 views

Waking up an ESP8266 using an MPU6050 accelerometer not working

I am trying to wake up an ESP8266 from deep sleep using an MPU6050 interrupt. I am using Micropython to configure MPU6050 to generate a 50us pulse (active low) on motion and connect it to the RST pin ...
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1answer
57 views

LIS2DH12 Watermark and Overflow Interrupts at the same time

I'm working on a project that uses the LIS2DH12 accelerometer by ST (product page). I have a couple of questions about it, and as it is quite a common part, I wonder if anyone here knows the answers: ...
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0answers
51 views

What could be a proper wiring diagram for this accelerometer?

First of all, I am a Mechanical engineering student with very basic knowledge of electronics, right now I am working on a project in which I need to measure the acceleration of a mechanical vibrating ...
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0answers
12 views

IMU Power Modes

The invensense ICM-20608-G power modes in the datasheet are well enumerated, but it is unclear how to enter those modes. There does not seem to be a direct value that can be written to a single ...
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0answers
20 views

Understanding the SIGNAL_PATH_RESET register

I'm trying to understand the signal path reset register in the ICM-20608-G IMU. In what condition would I ever want to reset the signal path? What is actually being reset? Is this intended to clear ...
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2answers
61 views

How to calibrate Accelerometer sensor physically?

I am having a development kit DK20948 that is a 9 axis IMU sensor on it. and to use it I am using SmartMotion eMD Page number 47, when using the CLI tool, I am getting data of the sensors and an ...
1
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0answers
52 views

ADXL343 data read

I am using a ADXL343 accelerometer in one of my designs and I am getting strange readings from the device. Just to be sure, I would like to confirm that I am formatting the data properly. (I get the ...
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1answer
126 views

IMU axis rotation, calculate values with respect to Earth plane

I'm building a project that uses an IMU (Inertial Measurement Unit). The project involves the device to be mounted inside a vehicle and I should provide the ...
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0answers
40 views

LIS3DH ADC reading 0 ~ 30v

LIS3DH accelerometer includes 3 auxiliary ADC (ADC0 ADC1 ADC2). but ADC channels are able to read voltage 900mv to 1800mv which corresponds to (-32512 to 32512). but I would like to read voltage 0 ~ ...
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2answers
98 views

how reliable are IMUs for a long usage (6 hours) rotation (only) tracking? [closed]

I know they are bad for positional tracking and drift from actual position over time but would like to know what is the situation with rotation only. I know Oculus DK1 used ordinary off the shelf ...
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0answers
63 views

What does the values of 0x10 and 0x08 mean for gyroscope MPU6050 registers?

I am trying to connect a gyroscope MPU6050 to arduino ATmega2560 and read its raw values from its 6DOF (gyro and acc). I found the following code: ...
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0answers
99 views

I don't understand the difference in data received between my C++ app, and XCTU/Realterm

I am new to coding in C++, new to wireless communication, and am self taught, so if you notice any mistakes not related to the problem please point them out as well! I have two XBEE series 1 attached ...
0
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3answers
67 views

How to measure tilt on a dynamic device?

I'm trying to instrument a vehicle component. I want to measure a component's angle during a drive cycle. The component has a single degree of freedom, it has a fixed axis. I'm trying to figure out ...
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3answers
57 views

Automotive accelerometer calibration

I would like to design a device which measures acceleration, yaw, pitch and roll for motorsport/automotive application. I plan on using an analog accelerometer, to provide better bandwidth and low ...
1
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2answers
45 views

Confusion about the meaning a parameter

Below is a part from this accelerometer: For +/-2g the Scale factor tolerance is given as 10mg. There is also 0.25%. This is in parentheses as 1.25(0.25%) V/g. Is 10mg derived from 1.25(0.25%) V/g? ...
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0answers
93 views

STMF4xx MPU6050

I have problem with reading data from MPU6050 to STM32F4 nucleo board. The connection is with I2C. The problem is that in the first function IsDeviceReady the device is recognised and the LED does ...
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3answers
88 views

Accelerometer MMA8451 issue

We at my company, has a very strange issue regarding til MMA8451. We are experincing that our accelerometers data can be suddenly wrong over time. We have approximately 250 devices out, running in ...
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2answers
113 views

3 axis accelerometer for detection of cutting a fence [closed]

I am currently working on a project and would appreciate your help. So i have this fence (eg. 3m x 3m) on which my 3 axis accelerometer is mounted in the geometrical center. It can detect whether ...
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4answers
300 views

Speed calculation using Accelerometer

I am using ST manufacture Accelerometer(LIS2DE12) and i making a small hobbyist project for me. For this I am using ST-Microcontroller and developing the C code i am using KEIL V5 IDE. Configured the ...
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2answers
492 views

MPU6050 with STM32 reading axes X,Y,Z values problems

I have an STM32F303 Discovery and I want to use the I2C bus to receive the x,y,z data from an accelerometer MPU6050. Does anyone have source code for this? The problem is that the address of the ...
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1answer
38 views

Accelerometer first-order Markov chain model

I am trying to implement the algorithm for altitude estimation presented here. In the beginning of section 2.1 the authors present the mathematical model they will be using for the accelerometer. The ...
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0answers
33 views

Calculating the azimuth from LSM303DLHC

According to a datasheet I've prepared the code which allows to obtain data from magnetic sensor LSM303DLHC and calculate the azimuth as follows First, I configured an accelerator and magnetometer <...
0
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0answers
46 views

Failure accessing ST LIS3DSH accelerometer CTRL_REG_4

I'm writing to ask if someone has ever encountered a quite weird behaviour of LIS3DSH. to properly use such sensor, a number of registers must be configured via the spi bus. I implemented a routine ...
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2answers
83 views

can an acceleration sensor (smartphone) sense if someone is sitting in a train or just sitting normally?

can an acceleration sensor (smartphone) sense if someone is sitting on a train (or commuting in a car for example) or just sitting stationary? This may be a really basic question but thanks for your ...
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1answer
56 views

Using my sensor values, what are relevant data analysis techniques?

I am currently trying to devise a system using gyroscope+accelerometers placed in on a hat/cap in certain areas of the head (Front-left, Front-right, Centre, Back-left, Back-right). I want to create a ...
0
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1answer
283 views

Cannot read accelerometer values from MPU6050 Interfaced with STM32F303RE

I m working on a "self-balancing robot" with STM32F303RE.I m using STCubeMX to generate the MCU configuration code and then I added the main() to get the values from MPU6050 from the following code : ...
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0answers
56 views

How do I measure max oscillation of building using accelerometer?

For my school project, I am trying to measure the effect of a mass damper by changing the length of the string (that carries the mass), my setup is similar to the following video: https://youtu.be/...
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0answers
35 views

Accelerometer help

I am a student and am working on a school project however I am having trouble with accelerometers (gy 61). I want to find the displacement of something and I have collected output from the ...
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1answer
622 views

MPU6050 showing inconsistent angle values

I'm using this Arduino code to calibrate and read from an MPU6050 accel/gyro sensor from an Arduino Mega. The calibration and reading of values seemed to go well. However, I'm seeing some ...
0
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1answer
75 views

Are there any “Translation Accelerometer”?

I find many "Rotation Accelerometer" such as "GY-85", "GY-521", but no one for Translation. Are there any "Translation Accelerometer", can detect the XYZ axis movement?
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1answer
158 views

LSM6DS33 how to filter accelerometer values even more (< 50Hz)

I'm trying to use a LSM6DS33 6-axis accelerometer/gyro chip as an inertial navigation aid, participating in sensor fusion. The problem is that the application has large amount of vibrations and the ...
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0answers
66 views

Measuring pitch under dynamic acceleration: better to use 6DOF sensor or 9DOF?

I am working on a project that is challenging me. I've researched on the subject as best I can, but would like additional opinions. I have a 4' long aluminum c-channel (essentially, a metal rod) with ...
0
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1answer
329 views

Reading FIFO in LSM6DS3

What is the difference between reading the FIFO registers(FIFO_DATA_OUT_L,FIFO_DATA_OUT_H) and Sensor output registers(OUTX_L_XL to OUTZ_H_XL) both are same?which is recommended to get the raw data ...
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1answer
674 views

Interrupt and FIFO settings in LSM6DS3

Requirement: Need to use only accelerometer in LSM6DS3 at 104 Hz in 2g full-scale mode and FIFO in Continuous mode. Interrupt should be generated every 320 msec. Understanding: For every 1 sec there ...
6
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1answer
297 views

Transient drop in accelerometer gravity reading when in motion

I am using Pololu AltIMU-10 v4's accelerometer to monitor the acceleration of my system. I understand that when the sensor is placed upright on the table, it should measure 1g in the +ve z-axis. ...
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3answers
110 views

How to detect the Accelerometer is moving

I am using the MCU intergrade 3-axis accelerometer and set it on the bicycle. I want to detect the bicycle is moving or stop. But the vibration noise let my function failed. Is anyone could share ...
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2answers
72 views

Optimal sensor for measuring object velocity in an open area?

I am trying to measure vertical and horizontal speed of an object attached to a parachute. It will be launched from a low altitude and in an open area, allowing satellite GPS lock. Data treatment ...
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3answers
115 views

Radiation Effects on Electronics

I'm developing a magnetic field sensing kit for a project. The kit contains sensors (specifically an accelerometer, a gyroscope, and a magnetometer) that will detect and measure magnetic fields, and ...
2
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1answer
215 views

Realistic Magnetometer Specifications [closed]

I'm working on making improvements to an old project I helped design. The project used an Arduino to take measurements from six sensors to measure the strength of a nearby electromagnet that generated ...
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1answer
72 views

Measuring High Speed Angular Velocity 20,000+ rps

I'm looking for a way of measuring angular velocity in a spinning object at high speeds - up to 25,000 degrees per second. There's ridiculously expensive gyros in the market that can do this, but I'm ...
12
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7answers
2k views

Acceleration when device is on tilt

I'm currently working on device that uses always-on 3D accelerometer(using scale +-2g) and 3D gyroscope(using scale +-250g) -sensor. I can read every possible vector (X,Y,Z) and their acceleration (g'...
1
vote
2answers
611 views

Converting Acceleration of ADXL335 data into displacement

I'm currently using a ADXL335 chip two measure acceleration then converting it into a displacement. I'm wanting to measure the vetical (-z direction) displacement range of maximum 10cm, so quite small....