Questions tagged [accelerometer]

A sensor to measure acceleration.

Filter by
Sorted by
Tagged with
4
votes
5answers
2k views

How would I condition the signal from an accelerometer for a microphone input?

I'm looking to measure vibrations using a 3-axis analogue accelerometer connected the the microphone input on a PC. Ideally I want to combine the 3 axis into one signal as I don't really care about ...
7
votes
1answer
2k views

Arduino + gyro/accelerometer == flight controller …?

Can I use the combination of an Arduino Mega + MPU-6050 gyro/accelerator module instead of a flight controller? Is there something else needed? It is said that the gyro/acceleration can be used to ...
2
votes
2answers
3k views

IMU (gyro + accelerometer) breakout board with integrated Kalman filtering?

I am in need of a reliable gyro/accelerometer combo, that already has built-in motion processing (don't want to deal with Kalman filters in software). It seems that there are breakout boards out there ...
5
votes
1answer
1k views

Modelling MEMS accelerometer's measurement noise using datasheet (ADXL330)

I'd like to model an Analog Devices ADXL330 MEMS accelerometer using data provided in its datasheet to estimate measurement noise. I'm using a simple mathematical model defined in the paper "Non-...
4
votes
2answers
310 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, roll,...
3
votes
2answers
10k views

Choosing an accelerometer

I would like some help in choosing the right accelerometer for my application. I have been looking at a lot of accelerometers from various major manufacturers and have done some testing on one of the ...
4
votes
7answers
3k 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 ...
3
votes
2answers
360 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
2answers
2k views

Accelerometer switch to trigger LED fade

I'm planning out a very simple circuit using an LED, capacitor, switch and a battery. The Idea is that the LED is off until something "bumps into" the circuit. At this point it should light up and ...
1
vote
3answers
3k views

Cheap accelerometer in DIP package?

I've been looking around to see if there's a relatively cheap (around £5) accelerometer / tilt sensor in a DIP package for prototyping. Breakout boards exist for the ADXL335 but seem to be ...
0
votes
1answer
299 views

Measuring rotation over z-axis (gravity axis) inside an metallic duct

Well from my first research from the web I wasn't able to tell if what I need can be done. The thing is, I need to measure the rotation over z-axis (yaw), in other words, to know the relative angle ...
5
votes
2answers
436 views

Adequate decoupling / noise reduction for two accelerometers?

This is my first PCB, so please forgive some of my ignorance! I'd like to mount two accelerometers (ADXL193: +/- 250g), orthogonally, on the same PCB, and have a question about noise. The current ...
2
votes
1answer
2k views

Vibration Measurement using Accelerometer ADXL335

I like to know how to measure vibration in Hz using ADXL335/similar sensor in one axis, With that sensor, after converting digital using ADC, now i have some 8-bit binary value(0-256 in decimal)... ...
5
votes
5answers
2k 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 ...
4
votes
1answer
2k views

Data from BMA180 accelerometer into arduino is sporadic

I've been trying to get a BMA180 (I'm on my second one already) to send a continuous stream of accel data via a serial port (eventually bluetooth but that's a problem for a different day). I've looked ...
2
votes
4answers
7k views

Did anyone build an accelerometer-based mouse? [closed]

To save my hands from CTS (Capal Tunnel Syndrome), I want to have a mouse that uses an accelerometer, connected to any limb in the body, to replace the conventional mouse that you move with your hand. ...
4
votes
2answers
3k views

Wireless accelerometer with Arduino

I'm planning to build something like this: http://www.youtube.com/watch?v=3RGcYiV4hEE But with an Arduino replaced with the easyUSB chip. Is there any simple solution for that. Here there is an ...
3
votes
3answers
4k views

How to detect angular position of a device mounted on a rotating wheel?

Is there a sensor that can sense whenever rotating wheel pass the ground? Like when mounted on a bicycle wheel rims, but without anything mounted on a bicycle frame - only mounting on a wheel it self ...
0
votes
2answers
317 views

Good graphing/interpreting software

Is there any software that would graph x, y, and z values as fields / time written to a sd card by a microcontroller with an accelerometer? Or would I be better off writing my own.
3
votes
3answers
484 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 ...
1
vote
1answer
381 views

X-bee and accelerometer: problem streaming data

Hoping someone might be able to point me in the right direction. I am currently trying to create a wireless accelerometer using two x-bees (series 1). The accelerometer module is set up so that the x,...
2
votes
1answer
303 views

Accelerometer with Basic Stamp

I am a physicist and I'm planning to demonstrate some simple classical mechanics experiments to a group of students. I'd wonder to know if there are any schematics and codes available for connecting a ...
9
votes
2answers
716 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
617 views

A speedometer like chip

Is there a device which acts like an accelerometer but only measures absolute velocity? I could integrate the accelerometer's output but errors quickly accumulate and cause problems. Preferably the ...
6
votes
2answers
8k views

How to determine relative position using accelerometer and gyro data

I am designing a robot, and need to track the distance and direction of the robot motion, Nothing in 3D, I only need x,y and angle in x y plane. My question : Is it possible to use gyro and ...
3
votes
1answer
5k 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
6answers
10k views

Calculate G's of an Accelerometer

Pat asks: Accelerometer Breakout Board - ADXL193 +/-250g could you tell me if this is correct. Looking at the data sheet the mid sensitivity is about 8mv/G @ 5volts. If I use a 10bit adc @ 5volts ...
4
votes
1answer
281 views

Do I need an accurate clock for an accelerometer?

I am working on a project where I want to get very accurate data from an accelerometer. I plan on sending my data over bluetooth to be interpreted by a computer. I am assuming that bluetooth will ...
5
votes
2answers
865 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, ...
3
votes
1answer
211 views

Choosing regulator for gyro's and accelerometer

Should I choose a linear regulator that has good transient response? or ultra low Vrms noise? or high accuracy? I am using digital accelerometers and gyros (BMA180 and ITG3200).
2
votes
1answer
302 views

Acceleration sensor in HTC phone

Does anyone know which acceleration sensor was used in the HTC Touch Diamond mobile phone?
5
votes
3answers
195 views

How to repond to a kinetic impact electronically

Say I have a large soft surface such as a jacket and I want to register it getting hit by a paintball from a paintball gun, how would I do that? What type of sensors could I use?
1
vote
2answers
452 views

Vibration sensor, using centripetal accelerometers

To measure (a) rpm and (b) whirling of a drive shaft, I have built a sensor with 3 centripetal accelerometers arranged at 120 degrees separation around the circumference of the housing. The maths ...
4
votes
1answer
2k views

angle calculations

I am using a Freescale 3 axis accelerometer to build a model that flies and would like to log and calculate angles during a flight. My model can both hover and move up to 40kph as well as rotate on ...
16
votes
5answers
5k views

calculating inclination using accelerometer?

i have an analogue devices ADXL203 accelerometer on a breadout board and was wanting to use this to measure the inclination of some equipment at a reasonably high frequency (20-30 Hz). i am hooking ...

1
4 5 6 7
8