abdalrahman9
About
- Username
- abdalrahman9
- Joined
- Visits
- 200
- Last Active
- Roles
- Member
Comments
-
Can't a solution be found for this. This is a very problematic issue because as if now I require to reset the whole system when at least one device disconnects .... as the API cannot be used to resubscribe to the loggers and download from them ....T…
-
bump
-
Any luck with finding a solution for this?
-
Yup, I understand that the Mag's orientation is different from the gyro/acc. Okay thanks for the response. If you do get the time, then I would appreciate the more detailed response. Hopefully the MMS release will go well!
-
Okay I will try my best as I have already read most of the content online related to Quaternion manipulation and multiplication. As for the Magnetometer, after I have read the BMM150 datasheet and using the below reference picture: I positi…
-
Any ideas on the quaternion taring algorithm. It seems simply ( new raw quat x tar) doesn't give me the corrected coordination. Any help would be much appreciateed.
-
3: It would seem that my taring for the quaternions is wrong. I have tried to test it with this visualisation tool online and it doesn't seem to coincide with my tests. For example, I made a taring angle of 30 along the y axis, took the correspon…
-
1: Can you please provide an illustration that shows the difference? 2: Okay I will test for my self when I understand the orientation of the mag 3: ... umm my whole previous posts were talking about how the reset orientation API doesn't work.…
-
So I actually now 5 questions, any help would be greatly appreciated: 1: This question is related to your reply: @Laura said: The orientation are for the bmi160, not the mma. Now from what I understand, that means that the orient…
-
Ow so it is a simple multiplication? I will try it out. Also, after reviewing the datasheets of the sensor you have used and the tutorial, aren't the orientations that you have used in these illustrations incorrect? Its just because I need to mak…
-
Just to show that when I use the API, or the inherent reset of the Quaternions when I start/stop Sensor fusion, it right away goes back to its drifted Quaterion values as shown in the below picture (Of course I am not moving the sensor at all). You …
-
Thank you so much for this data. It is much appreciated What do you think about the Quat, I don't think a static scalar will actually be a correct method to offset the reference to 1,0,0,0 as the Quat is a vector. So would I need to find the rota…
-
Also I have come up with the issue of Magnetometer. I was thinking that I would tare it when the Y axis is facing North and the X axis facing East. Though I didn't know what would be my reference (what are the values of X,Y,and Z that I want to be t…
-
Okay thank you.
-
Okay so for a linux platform and that can connect to 3 or 4 sensors which one have you found to be the strongest and most reliable from them all.
-
Is there any ideas related to this problem? This is very crucial as disconnection is very frequent and so if I cannot resubscribe to the logs/processors after I reconnect that is a huge problem. Any help is appreciated. Thank you.
-
After reviewing the forum some more it would seem the final option we have is to "tare" the signals. From what I understand, Taring is simply offsetting the signals with a specific value when the device is in a specific orientation,direction, and al…
-
@Laura said: Hey Pete, When we did our ML/AI worked we use a lot of Javascript and Python AI/ML libraries and everything we did was on an Intel Nuc running Linux (Ubuntu 16/18 is nice). We also used expensive BLE dongles. Hello there, …
-
Okay thanks for the information. I guess the magnetometer I can't do much about unfortunately. I guess the only way is to look at the changes which I hope will be the same. As for the Quaternions, I have used the command as you have suggested …
-
When I tried to use the api that you posted I keep getting that that command is not a function. Here is the specific error: TypeError: MetaWear.mbl_mw_sensor_fusion_reset_orientation is not a function
-
Okay thank you for posting the api, I will try it out and see if it works out. For the battery, then there is no way that I can get accurate Magnometer even with calibration?
-
As for the orientation, they are all in the same orientation, direction, and position when I start the sensor fusion. Though I still get different results. I have tried to find the reset orientation API call for javascript but with no luck. Could yo…
-
Hello there, So, i didn't find a way to set the hci device correctly within the code. So my solution was to create a bash script that runs 8 different threads (because I have 8 sensors) and set the specific hci device (with NOBLE_HCI_DEVICE_ID = …
-
I mean I have done the following from the tutorials: sudo apt install bluetooth bluez blueman sudo apt-get update sudo apt-get upgrade sudo reboot I didn't put bluez-utils and pi-bluetooth as this is on my computer but I have also tried it …
-
Okay thank you for all of your replies. Then how about my question about establishing a more stable connection for streaming? Is there anything additional I can do to create the BLE connection between the RPi and my sensors more stable other than…
-
Thank you for the quick reply. a. So my question is then how would you down sample the raw acc, raw gyro and raw mag? For in sensor fusion it internally configures the ODR of the Acc and Gyro to 100 Hz and the mag to 25 Hz when NDOF is picked as …
-
Also, I tried the metehub SD on a raspberry zero and it worked... but when i put it on the raspberry pi 4 it doesn't... The only thing that I can think of as the problem is that it is not compatible with raspberry pi 4