7
votes
Why is an MPU6000 more well suited for drones than an ICM IMU?
There has been a good deal of discussion on this topic, and it has been no small source of conflict between several of the main firmware players in the high-performance DIY drone flight controller ...
- 1,200
7
votes
Why is an MPU6000 more well suited for drones than an ICM IMU?
It's not superior, it's just good enough, cheap enough and may be more noise resistant than ICM20602.
There's a bunch of flight controllers with dual IMUs onboard. For example, Lumenier Lux F7 has ...
- 71
6
votes
Accepted
Difference between a 3 and 6 axis gyro
There is actually no such thing as a 6-axis gyro; the correct term for this is "IMU", which stands for "Inertial Measurement Unit". An IMU is a device that combines several inertial sensors that ...
- 2,967
5
votes
Accepted
What does the full scale range in a IMU MPU9250 datasheet signify?
TL;DR:
The configurable scale ranges for the accelerometer, gyroscope, and magnetometer on the MPU-9250 IMU affect the maximum resolution and range of the reported values.
As you increase the full-...
- 5,948
4
votes
Difference between a 3 and 6 axis gyro
A three-axis gyro measures the speed of rotation in three-axis - pitch, roll, and yaw.
A six-axis gyro is a slight misnomer, as it is a three-axis gyro with a three-axis accelerometer, which measures ...
- 5,996
4
votes
What does the full scale range in a IMU MPU9250 datasheet signify?
The full scale range is the largest value that the sensor can report; this is usually a balance of sensitivity to word length. If you have 8 bits to report the value, how many deg/s do you make one ...
- 5,996
3
votes
Finding the velocity and position for small distance from IMU sensors
This is the best damned reference on rotations: Representing Attitude: Euler Angles, Unit Quaternions, and Rotation by James Diebel of Stanford University (dated 2006-10-20).
You didn't specify, but ...
- 1,912
3
votes
Accepted
How are IMU used to detect orientation with respect to ground?
The core idea regarding the accelerometer is the following:
if you take any flight of an object and calculate the average experienced acceleration over the whole flight (ignoring gravity as a factor ...
- 2,967
3
votes
Accepted
Betaflight attitude update rate only 100hz?
I haven't quite dug into the source code to confirm my suspicions, but this file lends credence to the idea that this task facilitates accelerometer-based attitude calculations and not gyroscope-based ...
- 5,948
2
votes
Eliminate effect of Vibrations on IMU
You need to be specific about what IMU hardware you are using, like a general purpose IC like MPU6050 (gyro + accelerometer), or flight controllers like Pixhawk, pixRacer, etc ..
In Order for you to ...
- 21
1
vote
Is roll rate, pitch rate and yaw rate same as gyro data along y-axis, x-axis and z-axis
The RC Rates are just the multiplicator value the Aircraft will try to execute your inputs. The resulting speed (degrees/sec) are just estimates based on a typical hardware configuration, without a ...
- 11
1
vote
Why is the noise in my accelerometer more pronounced than the noise in my gyro?
A large change in acceleration doesn't necessarily mean a big change in velocity. Since the chance in velocity is the integral of the acceleration, the velocity will barely change if the acceleration ...
- 2,644
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