Questions tagged [accelerometer]

A sensor to measure acceleration.

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votes
2answers
257 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 ...
2
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2answers
504 views

Measuring the balance of a rowing boat

Basically, I'm an amateur rower with mechanical engineering experience, however I am lacking in electronic knowledge. I need to find a way of measuring the pitch of the boat whilst I'm rowing, the ...
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3answers
1k views

Determining the angular displacement of a steering wheel

I am working on a project in which I am designing a vehicle driving simulator. In this project I need to measure the angular displacement of the steering wheel. The car in software simulator ...
5
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3answers
4k 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 ...
2
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3answers
7k views

Small Wireless Gyroscope & Accelerometer

I'm looking to assemble a very small circuit to transmit data from a gyroscope and/or accelerometer to a computer via wi-fi. It also needs to be self-contained (so should contain a power source). The ...
4
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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
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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 ...
10
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2answers
57k views

How to read a gyro/accelerometer

I recently purchased this MPU6050 GY-521 breakout board. I tried it with my Arduino Mega using this Arduino sketch provided by official arduino.cc. (MPU-6050 Datasheet, InvenSence (producer) Page) ...
5
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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-...
47
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1answer
66k 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 ...
10
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1answer
1k views

Recovering data from a saturated accelerometer

I have an ADXL345 accelerometer and mounted it to a hybrid rocket to launch. Unfortunately, I forgot to set the range from its default of +/-2g to +/-8g (we expected 6g during liftoff). For +/-2g ...
3
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2answers
9k 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 ...
3
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2answers
353 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 ...
3
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3answers
739 views

Which accelerometer and storage chip should I use to measure Foosball rod acceleration?

I want to prove my coworker rotates and laterally moves a foosball rod twice as fast as me. I was thinking I'd need a biaxial accelerometer (which one?) attached to the rod in between men (to not ...
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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
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1answer
289 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 ...
3
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1answer
11k views

Rotating a gyroscope's output values into an earth-relative reference frame

For whatever reason, I seem to have gotten myself twisted into quite a confusion on how to process data from my 3 axis gyro and 3 axis accelerometer to get gyro rotation values related to the earth's ...
5
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2answers
415 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 ...
3
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2answers
2k 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 ...
2
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1answer
2k views

Building a small 3-axis accelerometer mote

I'd like to build a remote device which reports its current 3-axis acceleration to a nearby (<10m) receiver. It needs to be as light and as small as possible. (I have no preference as to the ...
4
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2answers
3k views

Measuring accelerometer frequency with an oscilloscope

I've got a VTI CMA3000-D01 digital accelerometer and I'm controlling it via SPI from a Texas Instruments CC2540 chip using the embedded 8051 MCU. In the datasheet for the CMA3000, it mentions that ...
2
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1answer
2k views

What is the most common type of accelerometers in today's smartphones?

I know there are 6 different types of sensors for measuring acceleration: Capacitive Piezoelectric Piezoresistive Hall Effect Magnetoresistive Heat transfer-based I have trouble finding a source ...
2
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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 ...
2
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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
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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
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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. ...
12
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2answers
21k 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 haven'...
3
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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
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2answers
315 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
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3answers
482 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 ...
4
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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 ...
2
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1answer
302 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 ...
5
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4answers
10k views

Determine the angle and speed of a rotating platform

I have a 1 axis (x) spinning platform, that is spinning pretty fast ~300 RPM. I want to be able to detect with a good degree of precision how many degrees it has travailed from its starting position ...
1
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1answer
379 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,...
9
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2answers
689 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 ...
4
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2answers
306 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,...
2
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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 ...
3
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2answers
590 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 ...
3
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1answer
4k 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 ...
6
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2answers
7k 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 ...
4
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1answer
279 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
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2answers
851 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
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1answer
209 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
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1answer
298 views

Acceleration sensor in HTC phone

Does anyone know which acceleration sensor was used in the HTC Touch Diamond mobile phone?
5
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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?
33
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5answers
54k 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 ...
1
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2answers
449 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 ...
2
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3answers
3k views

How to interpret TI Chronos watch accelerometer data

I've been trying for an embaressing amount of time to figure out how to interpret the wireless accelerometer data from the TI Chronos. From my laptop with the usb-radio included, I read it into python ...
7
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2answers
3k views

Compensating for Accelerometer Cross-Axis Sensitivity

For my inclinometer application, I use an integrated 3-D accelerometer chip that outputs analog voltage. Before I deploy my device, I submit it collect a bunch of samples with different temperature ...