A sensor to measure acceleration.

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2answers
67 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, ...
0
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0answers
23 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 ...
0
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0answers
58 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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0answers
36 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 ...
1
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1answer
48 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 ...
0
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1answer
46 views

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

In java I have the code ...
0
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0answers
69 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
175 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 ...
0
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1answer
152 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 ...
1
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2answers
142 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 ...
0
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0answers
28 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 ...
0
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0answers
47 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. ...
0
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0answers
114 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 ...
2
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1answer
83 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 ...
2
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2answers
100 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 ...
0
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1answer
274 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, ...
0
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0answers
275 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
116 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 ...
2
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0answers
181 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 ...
1
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0answers
174 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
79 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?
0
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0answers
118 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
287 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 ...
1
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1answer
319 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.... ...
0
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2answers
210 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
59 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
votes
1answer
77 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 ...
-3
votes
1answer
409 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 ...
0
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4answers
249 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, ...
-1
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1answer
88 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 ...
3
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2answers
457 views

Temperature compensation of LSM303DLHC accelerometer / magnetometer

ST Microelectronics makes the LSM303XXXX, a popular range of 3-axis accelerometer / magnetometer sensors that are used on Arduino breakout boards, etc. The older LSM303DLH sensor has been replaced ...
4
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2answers
525 views

Building small, low-power pedometer/odometer with memory and time/date log

Background I'm a researcher looking at the use of personal tracking devices and apps (like Strava app or Fitbit device) for cycling. At the moment I'm designing a simple experiment where I want to ...
0
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0answers
46 views

Measuring alignment angle using accelerometer

Is it possible to measure the angle of rotation using accelerometer? I have a development board having a 3 axis accelerometer. I want to transmit the angle by which the board is rotated. How do I do ...
0
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1answer
119 views

Accelerometer and/or Gyroscope for gesture sensing

I want to sense 3D motion (gesture). I have 3 axis accelerometer. But I am confused if I need a gyroscope or not for orientation and rotation sensing. Isn't it possible to measure them from ...
0
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0answers
189 views

AXDL345 Accelerometer on SPI Raspberry PI with bcm2835

I have this accelerometer ADXL345. I am trying to read data from it from SPI using the BCM2835 Library here. When I run this, I SOMETIMES get a value back (other than zero), but it's never ...
1
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3answers
2k views

Is it possible to measure constant velocity using accelerometer/Gyro

I have a board that has a gyro and a 3-axis mems accelerometer. Is it possible to measure constant velocity using accelerometer/Gyro. I find velocity by integrating (summing) acceleration over time. ...
2
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2answers
206 views

Choosing an accelerometer for collisions

I currently have an ADXL345 accelerometer. For a project, I need to be able to detect if my device has a heavy collision with a wall / hard surface. I need to trigger other events on a big collision. ...
3
votes
2answers
180 views

Gyroscope questions: building a stable platform

I'm embarking on a summer project and have a few questions. I'm planning to build a 3-axis stable platform for electronics. (Picture a flat surface that stays parallel with respect to the ground while ...
2
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2answers
240 views

LSM303DLHC low-power and high precision modes

The LSM303DLHC is a 3-axis accelerometer + 3-axis magnetometer chip from ST. The datasheet is a bit light on details however. I'm trying to work out what is different about the low-power mode and ...
1
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2answers
169 views

Problems while using accelerometer as a motion switch

I am using an accelerometer ADXL206 and a microcontroller PIC16F917 to determine the relative linear motion of a device that functions according to this motion. I can read data from the ...
1
vote
1answer
238 views

How to get translation and roation data using 6DOF MPU6150

I am trying to get the position data from an IMU 6 Degrees of Freedom (MPU-6150) board using an Arduino Uno. I am trying Jeff Rowberg’s example MPU6050_DMP6.ino that may be found here. This is the ...
0
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3answers
386 views

How to decrease the sensitivity of a sensor (accelerometer) [closed]

The accelerometer in this kit are very sensitive. Even a small touch changes the values very rapidly. I want to lower the sensitivity of the sensor. What is the way of doing this?
0
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3answers
303 views

Converting two's complement hex values to binary?

I'm reading x-axis accelerometer data from an IC via the I2C bus using I2C-Tools ( specifically i2cget ) in Linux. Here is the code that is reading these values: ...
5
votes
1answer
193 views

How can I lower output impedance of an accelerometer?

I'm planning to use an accelerometer with a microcontroller to measure acceleration. The issue that I have ran across is that in PIC microncontrollers the ADC requires that the connected analog ...
0
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0answers
213 views

Angle errors in IMU (using Accl & Gyro)

I am making Autonomous Quad. I am programming my IMU using ADXL335 -3 Axis analog Accelerometer & L3G4200D 3-axis digital Gyro. I am using ARM Cortex M4F based TI's stellaris launchpad LM4F120XL. ...
0
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0answers
160 views

Calculating covered distance using AHSR sensor

I want to measure in real-time the distance covered by a AHSR sensor between two points (basically I am trying to measure the stride length during the walk, so I will attach the sensor to a foot, and ...
-1
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1answer
246 views

accelerometer for linear displacement

I have accelerometer readings from the android device. I would like to know what kind of acceleration this data represents(rotation or linear acceleration). Is there anyway I can use this data to ...
0
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2answers
4k views

Wiring a GY-521 to an Arduino Uno R3?

I am searching for a non-technical picture or diagram or explicit textual instructions explaining how to wire a GY-521 Accelerometer/Gyro to an Arduino Uno R3. I am a software developer and need ...
3
votes
1answer
184 views

Problem stacking accelerometer and SD card shields on Arduino UNO

I have an ADXL345 accelerometer on a Makershield stacked on top of a Seeed SD card shield. Both of those are stacked on an Arduino UNO R2. I've got each working individually, but when stacked they ...
3
votes
2answers
562 views

low pass filter design for accelerometer

I find the following code for a simple implementation of a low pass filter. #define alpha 0.1 accelX = (acceleration.x * alpha) + (accelX * (1.0 - alpha)); I have been experimenting with the value ...