Questions tagged [accelerometer]

A component which measures G-force to detect which direction it is moved or tilted in.

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What should be the delay to be given for reading accelerometer

I have five accelrometer sensors (MMA 7361) connected to the analog channels of Arduino Duemilanove. I am using the following code to read the data. (I am reading from only one axis from each sensor.) ...
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854 views

collecting & visualizing sensor data - best approach?

I'm working on a kite-related project where I'm using Arduino + accelerometer to track data while a kite is in the air. I am struggling a little with the best approach - help on the following ...
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70 views

How to protect sensors used on atheletes?

I'm working on a project were we are trying to attach accelerometers to soccer players and capture various aspects of movement data. Breadboarded circuits are coming along nicely and I'm now looking ...
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MPU-6050 giving strange data

I'm using an MPU-6050 chip in order to calculate orientation. It is connected to an Arduino Pro Mini. I am using code written by Jeff Rowberg that uses the internal DMP. The 57600 baud rate crashes ...
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Memsic Accelerometer not returning T value

I hooked up a Memsic2125 accelerometer to a Arduino Uno. X and Y values are returning fine, but the T value is returning -4000 every time. // these constants won't change: const int xPin = 2; // ...
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1answer
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Calculating Angles from MPU6050

I've been playing with a GY521 breakout recently with the MPU6050 chip on it, though i've hit a bit of a problem that I can't quite work out I know when I rotated the board I rotated ~90 degrees ...
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1answer
168 views

How to Segment Accelerometer Signal at idle points

I'm using an 3 axis Accelerometer(GY-521) to get the acceleration data and also the gyroscope to get the gyro data. I want to segment the signals at the idle points so that i can get the segmented ...
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1k views

Dead reckoning with an accelerometer

Is it possible to use an Arduino, connected to a 3 axis accelerometer, to estimate a platform's continuous change in position and orientation? I have a small mobile robot, and given an initial ...
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1answer
956 views

Using IMU for a small Arduino and bluetooth support

I'm gonna start a project with an IMU with a bluetooth support inside a small board (mini or lillypad) and send datas to the mobile phone. But I'm quite new to those kind of technologies. I'm going ...
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2answers
5k views

Enable free fall detection using Arduino

I'm trying to get an arduino board to detect simple free fall condtions. Currently, I have a 9DOF sensor (https://learn.sparkfun.com/tutorials/lsm9ds0-hookup-guide) and am able to get the raw data ...
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1answer
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square root of large number

I've got 2 int16_t numbers, say 388 and 10288, which are sensor readings from an accelerometer. I want to estimate the angle of the device on that, but seemingly there are some type overflow issues: ...
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1answer
894 views

Analog angle conversion from +70° to -70°

I am using below sensor (accelerometer) .My application is a solar tracker, where I wanted to convert the sensor output into +70° to -70° format. My question is how can I convert the angle? #define ...
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How do I proceed with a fall detection sensor?

I am working on a human fall detection system using accelerometer and gyroscope which raises alarm in case of a fall. In all the papers I have read people have used net acceleration magnitude and ...
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2answers
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How can I implement sensor fusion using a gyroscope and a magnetometer to find the orientation?

I am working on Fall Detection in humans. A system that would raise alarm when a person falls. For this I plan to use acceleration to see if it is a fall and orientation change to reduce false ...
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1answer
897 views

Problem with interpretting and using the IMU data

I am using MPU6050 IMU for getting accelerometer and gyro data. I could read the data using the code from the I2Cdev library here, but the problem I have is that I can't use this data in a meaningful ...
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1answer
239 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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2answers
3k views

Bit mask first 2 bits of 16 bits for accelerometer

The datasheet for the accelerometer states that: Here is the data output from the accelerometer: I have tried to mask the first two bits using a bitwise AND command with B0011111111111111. I tried ...
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1answer
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MMA7660 accelerometer with ATTiny85

I'm trying to make the ATTiny85 work with the MMA7660 accelerometer, so far, without any success. Google search for "ATTiny85 MMA7660" gives poor results, and I'm not sure it has been done at all, at ...
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2answers
1k views

Using Arduino Micro with MPU6050

I have an Arduino Micro and an MPU6050 gyro/accelerometer board; I want to read DMP data from the MPU6050, but the sketch requires the use of the interrupt pin, of which I have none of the interrupt ...
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1answer
3k views

Setting up the MMA8452 to trigger interrupt

I am working with the MMA8452q accelerometer by Freescale. I am trying to set it up to be in low power mode, to go to sleep when no motion has happened, and to wake up due to motion being detected ...
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1answer
255 views

Do gyroscopes purposefully show erroneous data?

I tested an MPU-6050 (GY-521) using an Arduino Nano. I used the I2CDevLib and opened the MPU6050_DMP6.ino with the Arduino IDE. I opened the MPUTeapot.pde Processing-file with Processing. A few ...

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