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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63 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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161 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
70 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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2answers
142 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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2answers
134 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
99 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
279 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
107 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
112 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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2answers
212 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
189 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
253 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
122 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
2k 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
212 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
180 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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0answers
428 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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96 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
248 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
136 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
242 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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215 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
160 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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2answers
4k 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 ...
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1answer
505 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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387 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
706 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
802 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 ...
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2answers
393 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 ...
3
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1answer
339 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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2answers
272 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
390 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 ...
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3answers
624 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
184 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 ...
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1answer
9k 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) ...
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1answer
7k views

How do I get gyro sensor data (L3G4200D) into degrees/sec?

I've been using a gyroscope sensor for an Arduino project. It's all hooked up and working but I have no idea what the units of the data it's giving me are in. I try to spin the board in my hand at ...
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1answer
442 views

Interfacing Gyro with arduino

I'm quite new to the world of electronics, and so I need some newbee-help. I've got an Arduino uno, and I've recently bought a LPR550AL pitch & roll gyro. (if it helps detailed info can be found ...
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2answers
275 views

Weird readings from ITG3200 gyro?

I am having trouble making this gyroscope to work. I can sort of get Z axis readings from it. If I don't move it, the X and Y axises constantly display -1. When I move the gyro, the X and Y would jump ...
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1answer
369 views

Does a gyro need to be placed at the center of rotation?

When using a gyro chip to measure angular velocity, does it matter whether it is located at the center of rotation? I've seen it mentioned online without much explanation that it should be placed at ...
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3answers
4k views

What is the difference between 3 axis and 6 axis gyros?

Is there any real difference between those two modules? If so what is that?
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1answer
9k 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 ...
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3answers
315 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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1answer
175 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 ...
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2answers
575 views

Gyroscopes Output Voltage drift when not moving, trivial question

I don't have good experiences with gyroscopes and i would like to ask the question. Do the Output Voltage of Gyroscopes, whether analog or digital, usually drift when it is static? Ideally there is ...
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1answer
2k 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 ...
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1answer
349 views

Radio controlled car / Arduino control algorithm ideas

I have a brushless radio controlled car that is far, far too powerful, such that at about 60% throttle the front wheels will come off the ground, the car flips and stuff breaks. To remedy this, I ...
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0answers
100 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 ...
2
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2answers
2k 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 ...
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4answers
602 views

What PIC microcontroller can interface with an ADXRS800 gyroscope with SPI output?

Straight to the point... I planning to use an ADXRS800 gyroscope and its output is a 32bit SPI message, does this mean that it can only be interfaced with a 32bit PIC microcontroller, or could i use ...