Jump to content

Can IMU Brick work faster and be more precise ?


Recommended Posts

Hi, Is it possible that IMU brick can work faster and be more precise without or with hardware upgrade?


Exsample IMU brick use like a gyro in RcHeli where real gyro have to:

- read data from sensors

- calculate how much is have to change rudder servo using PWM

- Send signal to servo

all things in rate 760 µs


same in auto stabilization, but for all 3axis.

Link to comment
Share on other sites

But if "On device programming" will be possible then ?


Q2: is it possible to change onboard algorithm to be less sluggish, and more acurate ? 

even if i use callbacks, imu.SetQuaternionPeriod(2); and try diffident value for SetConvergenceSpeed its still can by only only as toy not a tool, but i truly hope that will change in future.


Link to comment
Share on other sites

Look on this IMU (its way more faster, and accurate on wireless then Tinkerforge IMU over USB) http://www.x-io.co.uk/x-imu-demos/ and watch first movie, its working exceptionally well


Using this IMU to log walking path


This open source project implements Madgwick’s AHRS and IMU algorithms in C# and demonstrates their real-time performance alongside the x-IMU‘s own propriety algorithm. The source code also includes Madgwick’s implementation of Robert Mayhony’s so called ‘DCM filter‘ in quaternion form.




Maybe it will be an inspiration to improve Tinkerforge products.

Link to comment
Share on other sites

But if you know something about how to improve IMU algorithms, I'm sure Tinkerforge will appreciate your help on that subject.

If I knew how, it would long ago did.



Sure impressive, but that IMU also costs 3 times more than the Tinkerforge IMU. I don't think you can expect the same performance from both...


If its good then even at 3x price of TF IMU there is a market for it, u can take my word for it. If it will be on stock, the price is not a problem, for me 1.6m diameter spinning Rc heli blades at 2200 rpm is question of safety me and others in rage, and safety of expensive payload. TF have bright and shiny future, and i hope that they will be the best on the market, but they still have a lot of work to do.

Link to comment
Share on other sites

x-IMU does use Madgwick’s AHRS and IMU algorithms, which we use too! So they either


1. made the video with a very well calibrated and tweaked IMU,

2. have a better parameterization of the algorithm or

3, just use much more expensive sensors.


I would bet that it is a combination of 1. and 3. I probably could make a very similar video if i tweaked one IMU long enough.


When say that "its way more faster", what do you mean? Do you mean the 3D rendering lags behind?


And about the accuracy: Have you tried to recalibrate the magnetometers in your environment?

Link to comment
Share on other sites

"its way more faster" i meant that in current version TF Imu transmit data to slow over Wi-Fi extension to be able to use it. I have try use it in head tracking application for use in computer game "Euro Truck Simulator 2". Its work ok over USB. I will try re calibrate Imu when i will have free time, but first i have to read how to accomplish that.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...