A sensor to measure acceleration.

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26 views

android accelerometer frequency [on hold]

I am working on project that including android mobile device accelerometer. In my product I need to get samples in rate of at list 1000Hz but after doing a little research I found that I can't achieve ...
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0answers
57 views

What sensor could be used to collect data on a pipe being hit by a hammer, etc?

I am a junior high STEM science/health teacher working on a project where the students would like to measure/test the velocity of impact on an pipe and see the results/rate of collision in real time. ...
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1answer
65 views

Regarding Direction calculation using Gyroscope,Magnetometer and Accelerometer

We are using a MEMS tri-axial sensor which has an Accelerometer,Magnetometer and Gyrometer. We have also calibrated the Accelerometer and Magnetometer.This sensor package is used in a borehole ...
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2answers
71 views

Most energy efficient way to detect motion

I am hacking together a prototype wrist band, with BLE as the main component. I'd like the device to detect a bump or a wave. What would be the most energy efficient way to do so? I'd like the ...
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38 views

Triple Axis Accelerometer Breakout - ADXL335 synchronise

I have three ADXL335 Triple Axis Accelerometer Breakout boards. I wish to measure the the acceleration of a human leg as it walks at three points (hip knee and ankle). I want this to log this data in ...
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38 views

9 DoF Sensor Accelerometer Readings Inconsistent

I have the following sensor stick: https://www.sparkfun.com/products/10724 It has an accelerometer, gyroscope, and magnetometer. I have connected it to an arduino and am reading the accelerometer ...
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39 views

Is there an influence of accelaration on the gyroscope data

I want to create an application that measures the horizontal position of the device while accelerating (positive and negative). My biggest concern is that the gyroscope data will be influenced by the ...
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1answer
52 views

MMA8453 accelerometer I2C problem

I ran into an issue with my project. I use Renesas RL78 microcontroller and on one I2C bus I have two sensors: digital compass and accelerometer. Accelerometer type is MMA8453 by Freescale. ...
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1answer
84 views

Gyro vs accelerometer for rotational acceleration

For the same price chip, which will be more accurate to measure rotational acceleration: a gyroscope, or an accelerometer 10cm away from the pivot point?
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1answer
89 views

ADXL 335, lack of resolution for short angle inclination?

I am currently working on a project where I would like to measure X/Y inclinations changes, without worrying too much about the acceleration. I decided to use ADXL335 accelerometers in order to ...
2
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1answer
102 views

Measuring speed with 3axis accelerometer

We are creating a ball that changes colour depending on its speed when it rolls. I have a 3 axis accelerometer sensor. This is the code we are using at the moment: ...
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183 views

AHRS algorithm under continuous linear accelerations

I have tried several algorithms to get pitch, roll and yaw under continuous linear accelerations and vibrations (smaller than 0.4g, frequency lower than 10HZ). None of them give good results because ...
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4answers
834 views

Dead reckoning with accelerometer & gyro. Possible?

I have a 3 axis accelerometer and a 3 axis gyroscope. I've been tasked with developing a dead reckoning system using this hardware. Essentially what's needed is for me to develop some code to track ...
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1answer
80 views

Accelerometer acquisition, filtering and treatment on Pic

I've been asked to experiment with dynamic testing. Using accelerometer and strain gage bolted onto a metallic pipe,and hammering it ( the pipe ) I need to show out force of the impact, and ...
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2answers
145 views

MEMS Gyroscope BMI055 - random high spikes in data

I am using the BMI055 on my AVR through I2C. Datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf I set it to filtered output at an ODR of 1000Hz and ...
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0answers
69 views

Bosch BMI055 Accelerometer/Gyro causes I2C bus to crash when issuing a softreset!

Datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf I have recently integrated the Accelerometer of the BMI055 I added a soft reset of the chip at ...
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2answers
104 views

Reducing jitter and improving speed of accelerometer output

I'm not sure if this is an EE question or a StackExchange question due to the programming involved, but anyway here goes: I just built a tilt sensor for my tractor's front loader. I wanted something ...
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1answer
80 views

Accelerometer Bosch BMI055 returns 8 bit overflowed values?

I try to use a BMI055 Acclerometer and the output is driving me crazy. I have set it to 2G sensitivity at 1000Hz, that means I have an output between 0 and 4096 (12bit). The output is said to be ...
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1answer
101 views

Accelerometer raw data output to measure vibration,and do a frequency spectrum/ amplitude spectrum?

Ive used an Arduino to measure vibration on a washing machine and have up to 100 raw data out putvalues. I want to present an amplitude/frequency spectrum with these values, i have matlab and simulink ...
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0answers
72 views

GY-521 Unable to set PWR_MGMT_1 register - can't disable SLEEP mode

I am attempting to interface between a custom 8051-based MCU and a new (ebay) GY-521 module (Gyro/Accel chip) using I2C bus. I have written the I2C bit-bang functions myself and they seem to be ...
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2answers
108 views

Simulating accelerometer noise

I would like to create a software simulation of an accelerometer (MPU-6000). As part of that simulation, I need to model the noise on the accelerometer signal. According to the datasheet of the chip, ...
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0answers
66 views

How to use ADXL335 to detect direction of movement

I want to use my ATmega32 with the ADXL335 accelerometer to make a glove that works like a mouse. How to detect whether accelerometer is moved to the left or right direction. Any help would be ...
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143 views

Read Gyroscope (& Accelerometer)

So I have an MPU-6050 (Triple Axis Accelerometer & Gyro Breakout), which I use with an Arduino UNO. Everything is connected properly and I can easily read the raw data from the MPU-6050 on the ...
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67 views

ADXL335 Accelerometer response verification

I am in the design stage of a experimental vibration analysis system for civil structures.currently trying to select an mems based accelerometer for vibration analysis. I have taken a breakout board ...
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1answer
103 views

Prototyping for Bluetooth accelerometer

I'm a software developer looking to prototype an application that requires input from a 3-axis accelerometer, ideally via Bluetooth LE. Current specs on the accelerometer are +/-50G sensing range ...
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1answer
58 views

2's complement only works in one direction with the LSM303DLHC

In java I have the code ...
2
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1answer
283 views

Arduino UNO and ADXL345 getting 0 0 0 OR -1 -1 -1 outputs with SPI communication

I have EVAL-ADXL345Z evaluation board from Analog Device hooked up to the Arduino UNO R3, the code complies and runs fine. At first I could still get the output values, but after sometime the output ...
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3answers
630 views

Track 3D Position with an Accelerometer [closed]

I'm trying to build a piece of hardware with an accelerometer that could track the approximate 3D position of an object. The accelerometer would not be rotating, so a gyroscope shouldn't need to be ...
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1answer
289 views

Tracking 2D positioning with IMU Sensor

I am using a miniature car and I want to estimate the position. We can not use GPS modules and most of the tracking systems that I saw, are using IMU senson with the GPS module. In our car we are able ...
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2answers
188 views

Am I forced to use a gyro and an accelerometer, to find a relative point in space?

I am quite new into the electronic realm, so forgive my lack of proper terminology. I am planning to build a simple device, that I will be use to manipulate a mesh on my computer. when I move the ...
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0answers
33 views

Accelemetor wifi module

I'm looking for a module that sends data from an accelerometer over WiFi. I looked around a bit and found this: Axivity-WAX3, but this was the only module I could find, and the site doesn't provide a ...
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59 views

Accelerometers strange data

I am trying to read data from the Microsoft Kinects accelerometer, and I did a measurement where I rotated the Kinect really slowly around each axis, to get every possible g value from the gravity. ...
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227 views

ADXL345 interface Pic16f877a

I have tried following code. Works absloutely fine until i see all values of X, Y and Z to be -1. No effect on tilt or anything VCC = 5V Chip Select is connected to uC SDA and SDL are connected to uC ...
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1answer
200 views

Can a 3-axis magnetometer be tilt compensated when moving/accelerating?

I have a magnetometer, accelerometer and gyro which all go swimming (attached to a person.) Data is logged and I now have a sample of that data. I want to calculate the magnetic heading the user was ...
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2answers
122 views

accelerometer accuracy determination

I was looking in to some accelerometer and wondering how I could determine the smallest acceleration change, certain sensors are able to detect. if I wanted to calculated this for example for this ...
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1answer
505 views

Undestanding LIS3DSH datasheet and AN339 Application Note - Intepreting accelerometer data

I am reading LIS3DSH accelerometer datasheet and I have some questions regarding following text: 2.2 Understanding acceleration data The measured acceleration data are sent to OUT_X_H, ...
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334 views

How to detect gestures with IMU

I am working on a project for which I need to recognize gestures in 3D space. I am building several modules, each of which can be held in one's hand. One can pick up two modules at a time and perform ...
3
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1answer
134 views

Accelerometer readings, what is wrong?

I made a board with the Analog Devices ADXL345. I then attached it to my robot and did obstacle avoidance with data logging for about 10s. The robot made 4 turns. Here is a graph of z-axis readings. I ...
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0answers
337 views

Kalman filter on linear acceleration for distance

In my application to calculate displacement from motion of accelerometer, I am using kalman filter to improve the displacement accuracy. Please note I am aware of ineffectiveness of acceleration for ...
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0answers
223 views

LIS302DL Accelerometer WHO_AM_I command

I've setup the behaviour of LIS302DL accelerometer IC using following code: ...
2
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1answer
109 views

Accelerometer IC single/double click event

What are Accelerometer single and double click event, can someone clarify it for me with some theory and/or practice?
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151 views

Wireless transmittion of sensor readings data

I want to transmit the sensor-readings data of an triple axis accelerometer from SparkFun. At the moment, I've built my setup over a cable, which is working. Now I want to send this sensors-readings ...
2
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4answers
548 views

Fall Detection using Accelerometer

I am now developing a micro-controller based system that detects when a person falls down using Accelerometer. The accelerometer might be placed in the person's cloth pockets. The important thing is ...
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1answer
374 views

MPU6050 connection

Here is what I have done... I simply copied the simple Arduino MPU6050 code from http://playground.arduino.cc/Main/MPU-6050 and pasted it in my arduino uno R3, which is interfaced with GY-521 IMU.... ...
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2answers
292 views

Measure RPM with a discrete component?

I have a problem that I need to measure an RPM of a rotating axle with a single element (circuit) attached to it - i.e. I can't use a hall effect sensor, because I can't use a separate magnet - I can ...
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1answer
66 views

Accelerometer selection? [closed]

I would like to design a circuit which when moves should give out a voltage. So I would like to choose an accelerometer for this application. I wish to go for single-axis accelerometer which is quite ...
0
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1answer
84 views

Tracking movement of limbs for smartphone app

I'm looking at building a smartphone app that will need to track the users limbs (say legs/feet) as accurately as possible. The goal is to trace the moments of body parts and the timing of the ...
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1answer
652 views

How do you use an accelerometer as a speedometer in a car?

I was given a task to put a accelerometer inside this block diagram. I've done tons of research but still couldn't find any way. Ignore those chinese words. The left and the right is the motor of the ...
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4answers
334 views

What sensor to use for sensing azimuth & altitude of satellite dish?

Instead of using a motor encoder, what electronics sensor I could use to know the position of a satellite dish? In this case will be the Azimuth and Altitude of the dish (2-axis). Magnetometer, ...
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1answer
95 views

Calculating Volts and acceleration from an accelerometer

I am using a Zephyr Bio-harness 3 device as an accelerometer project I'm working on. The device outputs in ADC units and I'm not sure how to convert these units into volts or gs. The specs of the ...