Tagged Questions

-2
votes
0answers
44 views

Accelerometer in Sony Phones? [closed]

I want to know the exact model of accelerometers used in Sony Xperia U/Xperia P models. All i know is they are by ST Microelectronics. Moreover how can i change max "g" in these android phones?
0
votes
1answer
31 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
votes
0answers
34 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 ...
5
votes
2answers
212 views

How can I detect angular movements and disregard lateral movements?

I'm working on a project that involves a flat platform that a user can tilt from side to side and forward and back. I'd like a sensor that can monitor the angle difference between the platform's ...
-6
votes
2answers
101 views

(Need help ASAP!) Electric motor bike with BASIC Stamp [closed]

We're doing the project is to develop an electric motor bicycle to assist the bike rider going up steep hills. In our project, we modified a bike with combination of electric motor, goniometer sensor ...
4
votes
3answers
391 views

Getting coordinates of a device in a 3d space

I want to make a device that knows itselfs x and y coordinates in a 3d space, for example in a room. I can move the device anywhere in the room but I just need x and y coordinates. Is there anyway ...
12
votes
1answer
3k views

What are the differences between a gyroscope, accelerometer and magnetometer?

What is the difference between a 3-axis gyroscope, 3-axis accelerometer and 3-axis magnetometer? How do these sensors work? Why are all 3 used in some devices like smartphones, tablets, quadcopters ...
2
votes
2answers
223 views

Circuit movement detector

I'm looking for some simple schematic for movement detection. I want to use it with a small hobby project of my own to detect if someone is moving the box, doesn't matter the direction. I'm looking ...
2
votes
1answer
302 views

Sensors to detect and measure movement

I would like to know which sensors should I use in order to get measurement of a movement of my device (slow speed movement on a 2D plane, in cm or mm if possible). The goal is to find out if the user ...
1
vote
0answers
86 views

Can internal PLL affect control logic in MEMS sensor?

I am trying to set up LSM320DL digital accelerometer-gyroscope. The gyro part works as it's supposed to, but I have no luck with accelerometer. I cannot achieve communication between MCU and ...
5
votes
5answers
596 views

Most small / cost effective way to detect changes in altitude?

I want to make a device, which when placed on someone skiing or snowboarding, will be able to tell whether that person is sliding down the slope. The problem is two-fold. I must first detect whether ...
5
votes
2answers
2k views

How Precise can I get with Accelerometer and Gyroscope

I want to build a little project to track an objects position in space. For this I intend to use an accelerometer and a gyroscope. The problem is I want this tracking to be very precise, and I ...
3
votes
3answers
291 views

in-car truck vibration/acceleration/gyro chip suggestion?

a project of mine requires to detect how much current vibration / acceleration is in units of (G), the car will carry important instruments, and the driver will be notified if the vibration is over ...
7
votes
2answers
379 views

accelerometer/gyro combo question

I have a system arm that free-ranges within a certain area. The arm swings, translates and rotates about a vertical axis which sits atop a mobile base. The mobile base can move any direction in the ...
3
votes
2answers
228 views

How to get 3D speed vectors?

I want to make a device that measures absolute small scale 3D speed. Small scale as in 10-150cm movements, and absolute as relative to ground and not relative to the device (the device will turn, ...
1
vote
1answer
1k views

Samsung Galaxy S accelerometer details

I'm working on a project on the Samsung Galaxy S smartphone. I need to know some additional information on its accelerometer that I can't find. Accelerometer datasheet I need to know following ...
3
votes
2answers
314 views

Placement of sensors, Gyro + accelorometer

Im looking for some placement help for 2 sensors, A gyro and an accelerometer both are going into a helicopter. my guess is to put the gyro and the accelerometer right below the main rotor, ...
15
votes
4answers
9k views

How to determine position from gyroscope and accelerometer input?

I have a 3-axis accelerometer and a 2-axis gyroscope. I intend to measure something that only moves in the X and Z axis. I've heard of using Kalman filters to smooth out the acceleration vectors, but ...
4
votes
7answers
2k views

Vibration sensor (accelerometer?)

For growing crystals it is important that there are no vibrations. Is there a cheap and easy way to measure vibrations in the floor, like people walking, doors closing etc.? Perhaps an accelerometer ...