Questions tagged [imu]
For questions regarding the use of or configuration of an Inertial Measurement Unit.
15
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148
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Betaflight and Mamba F405 mk2: no gyro after flashing the FC
I flashed my Mamba F405 into latest firmware by Betaflight Configurator and gyro is not working after this. Everything was OK on the dafault firmware but now it don't work on any.
How to fix it? Did ...
- 187
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57
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Why new/recommended MEMS IMU for AHRS for drones are 6-DOF instead of 9-DOF?
I'm developing an quadcopter as an DIY project.
I'm in nascent stage of development.
I've just finalized the design/working philosophy.
I'm planning to fuse data from 9-DOF (9-Axes) IMU + GNSS + ...
- 121
1
vote
0
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35
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FPV system with camera synchronized to IMU
I'm looking for a drone who has an IMU synchronized to a camera. Global shutter would be nice but I would even tolerate rolling shutter if it's time stamps lock to the IMU. Does a hobby priced ...
- 193
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193
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How to calculate roll and pitch from an accelerometer in whatever orientation?
I’m trying to use a tri-axial accelerometer as an inclinometer, measuring the so called roll and pitch angles. The underlined principle is that in stationary conditions an accelerometer senses only ...
- 21
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110
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How to implement sensor fusion with IMU and GPS
I have a 9-axis IMU (MPU9250) and a GPS module and I'm considering using other sensors later,...
- 318
7
votes
1
answer
395
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How are IMU used to detect orientation with respect to ground?
I have seen some interesting videos of quadcopters floating autonomously and recovering from free-fall flight using only IMU.
Can someone tell me how gravitational acceleration is detected and ...
- 193
5
votes
1
answer
138
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2
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2
answers
329
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Is roll rate, pitch rate and yaw rate same as gyro data along y-axis, x-axis and z-axis
As per the title, I want to understand if the roll rate/pitch rate/yaw rate are same as the data obtained from mpu9250 gyro sensor along y-axis, x-axis and z-axis?
If not then how to calculate roll ...
- 451
5
votes
1
answer
573
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Eliminate effect of Vibrations on IMU
I am testing pitch orientation correction of Quadcopter and ended up in a issue.
I have a test setup with one degree of freedom to test orientation correction. I have fixed the drone to the setup and ...
- 451
6
votes
1
answer
334
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Why is the noise in my accelerometer more pronounced than the noise in my gyro?
I have a small quadcopter equipped with the MPU6050, which has a built-in accelerometer and gyroscope. It is able to sample the acceleration at 1 kHz and the angular velocities at 8 kHz. However, I ...
- 111
3
votes
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61
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What is the frame system defined for Orientations comptutation using Quaternions [Madgwick filter/ Mahony filter]?
I am working with MPU9250 and I have implemented attitude & heading reference system based on Madgwick/Mahony filter. I capture the raw data [accel, gyro, mag] and pass to the Madgwick filter in ...
- 451
5
votes
1
answer
650
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Finding the velocity and position for small distance from IMU sensors
I am working on finding Velocity and Displacement from an IMU sensor (MPU9250). I have a Navio2 RPi4 setup, which gives me raw data (acceleration, Gyro, Magnetic).
As per my research this can be done ...
- 451
9
votes
2
answers
518
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What does the full scale range in a IMU MPU9250 datasheet signify?
I have MPU9250 IMU, which I am working on to get orientations from the sensor output data. While exploring the MPU9250 (also other sensor such as BNO055) datasheet I came across the full scale range ...
- 451
10
votes
2
answers
4k
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Why is an MPU6000 more well suited for drones than an ICM IMU?
I have seen people say that the MPU6000 is the superior gyro chip, even though the ICM chip has a faster refresh rate and is technically superior in any other use.
Why is it better to have a lower ...
- 4,422
7
votes
2
answers
1k
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Difference between a 3 and 6 axis gyro
When shopping for drones, I see a 3 and 6 axis gyro available, what is the difference between the two? Does one have a advantage when flying over another?
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