A gyroscope measures angular orientation and is calibrated relative to it's starting orientation. A true Gyro is a relatively rare and expensive piece of equipment, Most MEMs based "gyros" are actually rate gyros which have an output proportional to the rate of change of angular orientation.

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Components needed to determine position in 3 dimensions?

I'm trying to make a quadcopter using an arduino as a base. I've read on some physics involving determining pitch, yaw and roll and it seems like I'll need a gyroscope and a accelerometer. However, ...
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31 views

Data from BMA220 accelerometer

I am trying to make a device which can give x, y, z data and also can detect freefall and shock. For that I am using bma220 sensor. I am programming the sensor in 8g as I need shock values < 8g. ...
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1answer
101 views

Regarding Direction calculation using Gyroscope,Magnetometer and Accelerometer

We are using a MEMS tri-axial sensor which has an Accelerometer,Magnetometer and Gyrometer. We have also calibrated the Accelerometer and Magnetometer.This sensor package is used in a borehole ...
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41 views

Is there an influence of accelaration on the gyroscope data

I want to create an application that measures the horizontal position of the device while accelerating (positive and negative). My biggest concern is that the gyroscope data will be influenced by the ...
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2answers
103 views

Getting relative pitch and roll

This may be more suited for another exchange site, but I thought it'd try here anyway. I'm trying to figure out how to get pitch and roll relative to the ground. Say my vehicle is going up a hill, but ...
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1answer
101 views

Gyro vs accelerometer for rotational acceleration

For the same price chip, which will be more accurate to measure rotational acceleration: a gyroscope, or an accelerometer 10cm away from the pivot point?
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111 views

Memsense nano IMU

I am using Memsense nano IMU and specifically i am interested in getting the three axes Gyroscope data out of its 38 bytes frames. Following are the snapshots of the frames, and collected gyro data ...
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286 views

AHRS algorithm under continuous linear accelerations

I have tried several algorithms to get pitch, roll and yaw under continuous linear accelerations and vibrations (smaller than 0.4g, frequency lower than 10HZ). None of them give good results because ...
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20 views

Error models for tracking systems

Question in short: what is a suitable model to describe, model or even generate typical errors of a 2D, 3D, 6 DoF tracking system? I am interested in measuring the influence of the quality of ...
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4answers
1k views

Dead reckoning with accelerometer & gyro. Possible?

I have a 3 axis accelerometer and a 3 axis gyroscope. I've been tasked with developing a dead reckoning system using this hardware. Essentially what's needed is for me to develop some code to track ...
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2answers
179 views

MEMS Gyroscope BMI055 - random high spikes in data

I am using the BMI055 on my AVR through I2C. Datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf I set it to filtered output at an ODR of 1000Hz and ...
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Bosch BMI055 Accelerometer/Gyro causes I2C bus to crash when issuing a softreset!

Datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf I have recently integrated the Accelerometer of the BMI055 I added a soft reset of the chip at ...
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46 views

Measuring the change of angle on any plane

I've been trying to come up with a system to measure the change in angle on any plane. So basically I hold up my electronics board in some kind of angle, click on a button to reset the measurement, ...
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1answer
92 views

Accelerometer Bosch BMI055 returns 8 bit overflowed values?

I try to use a BMI055 Acclerometer and the output is driving me crazy. I have set it to 2G sensitivity at 1000Hz, that means I have an output between 0 and 4096 (12bit). The output is said to be ...
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0answers
92 views

GY-521 Unable to set PWR_MGMT_1 register - can't disable SLEEP mode

I am attempting to interface between a custom 8051-based MCU and a new (ebay) GY-521 module (Gyro/Accel chip) using I2C bus. I have written the I2C bit-bang functions myself and they seem to be ...
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173 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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1answer
332 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 ...
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1answer
72 views

Identify which face of a cube is up

I have a device whose shape is a cube and I need to identify in real time which face is up. My current solution is (not yet implemented) is to use a gyro to get angular variation, but I can see 2 ...
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196 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 ...
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180 views

Is The Magnitude of Gyro XYZ Meaningful?

Say I have a gyro that outputs degrees/second, and I take the euclidean magnitude of the x,y, and z rotations: $$ \text{magnitude} = \sqrt{x^2 + y^2 + z^2} $$ Is this actually useful? Is magnitude ...
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1answer
144 views

FOG Yaw Gyro, transformation to remove earths rotation based on attitude (roll,pitch,yaw,latitude)

I'm trying to use an accurate FOG gryo for tracking heading in a moving platform. The FOG gyro has two rate errors, Faraday (fixed amount regardless of alignment to the earth) and the 15.04 degrees ...
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0answers
356 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 ...
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1answer
231 views

Cancelling drift of a gyro by mounting?

I am trying to design a device that is used for capturing rotation. I think I will be using an IMU from Invensense, as I have a few of them to play with. A big problem gyroscopes seems to be drift, ...
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1answer
302 views

Gyroscopic Drift Correction

I'm currently working on a project where I am pulling readings from 3 Gyroscopes (STM L3G4200D) to a Microcontroller (TI MSP430) and sending orientation data to the user. I've been reading up on ...
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327 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
267 views

L3G4200D random spikes

I've searched this forum a bit in regards to the L3G4200D gyroscope, and haven't seen this problem mentioned, but I have seen others talk about it on other forums. I am seeing a strange large value in ...
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4answers
378 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, ...
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1answer
157 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 ...
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3answers
4k views

How to add additional I2C sensor module on Arduino

I have tried the GY-521 sensor on Arduino by using the guide from (http://playground.arduino.cc/Main/MPU-6050). It worked well. Can anyone guide me on how can I add another GY-521 module please? I am ...
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2answers
241 views

Gyroscope and compass. When its better to use one instead of another?

Why people prefer gyroscope instead of compass? Does gyroscope replace compass? I would like to see the pros and cons of each.
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2answers
218 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 ...
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867 views

Msp430g2553 i2c communication library with itg3200 gyroscope

I've been creating an I2C library for communicating with ITG3200 gyroscope for MSP430g2553 experimental launchpad. I still have slight problems with sequential reading and the signed values but I'm ...
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138 views

Reading from an ITG-3200 Gyroscope

I'm having some trouble getting any reading from an I2C ITG-3200 Gyroscope breakout I'm using from Sparkfun. Here is the product: https://www.sparkfun.com/products/9801 I have a feeling this might be ...
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1answer
312 views

Teensy 3.0 (TeensyDuino) + L3G4200D === “574” reading? Why? How to fix?

I have an Arduino Uno, an Arduino Nano, a Teensy 3.0 and a 3-axis gyroscope (L3G4200D module from Parallax ...
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0answers
166 views

L3G4200D Gyroscope not sending ACK

I am working on interfacing to a L3G4200D Gyroscope breakout board . I am using it in I2C mode, and the microcontroller I use is the 8051 (via bit banging). I havent connected anything to the SDO ...
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1answer
320 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 ...
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299 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. ...
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0answers
187 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 ...
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1answer
7k 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 ...
4
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1answer
662 views

L3G4200D Gyro Sensor - Measuring Angle?

I am making an IMU for 6DOF which has L3G4200D 3-Axis Digital Gyroscope. I've checked so many Blogs, Forums, Application notes and have programmed accordingly to get the proper reading/information ...
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0answers
473 views

Gyro questions numbers not staying steady at stand still

I am using a Parallax L3G4200D 3 axis Gyro. When a gyro is left on a flat surface with nothing interacting with it at all the outputs from it should all be “0″ correct? Mine is jumping around between ...
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1answer
1k views

Drift of values read by Arduino MPU6050 sensor

We are using a GY-521 Arduino MPU6050 breakout board, using Jeff Rowberg's DMP6 libaries. However, when we read values from the sensor while it is held stationary, the values drift considerably, ...
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1answer
1k views

Understanding the sensitivity of an L3G4200D gyroscope

I'm hoping someone can help me interpret the meaning of the sensitivity values for the L3G4200D gyroscope. Two small extracts of the datasheet are below: So my question is this. If the gyroscope ...
6
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2answers
583 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 ...
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1answer
431 views

calculating RMS noise

I'm trying to measure whether a gyro i'm using is damaged. I've got raw data coming off, and a total RMS noise value from the data sheet of 0.38 deg/s-rms. I'd like to look at the raw data and compare ...
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306 views

Criteria for gyroscope export restrictions [closed]

Recently I tried to purchase a gyro for a GPS car tracking device I'm designing and Digi-Key refused to sell me since I'm outside US and that specific part (L3G4200D from STMicro) is ...
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3answers
467 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 ...
4
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3answers
831 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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2answers
194 views

Gyro for Arduino

[Background] I've assembled a quadrocopter and now I'm going to design a flight controller for it, using Arduino. I can not use any of flight controllers, which you can buy in the store, only ...
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1answer
1k 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 ...