Laura
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You are right, the only way to change the sample rate of the mag (which we don't recommend, we prefer people use the defaul) is to use "mbl_mw_mag_bmm150_configure". The data types for the configure API call: * libmetawear.mbl_mw_mag_bmm150_…
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@slee. Thanks for the update. Sometimes the dongles are bad. You can email hello[at]mbientlab[dot]com for a refund or replacement of the dongle if you want. Just mention this post and we will take care of you.
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Again this all looks normal to me. You simply need to intelligently synchronize the sensor data in the real world.
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Todo: * Delete the MetaBase App * Reinstall your BLE drivers and make sure they fully work (test with the Bluetooth config/setup main screen) * Re-install MetaBase App The MetaBase App will crash if there is a problem with your Bluetooth …
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Looks like there's nothing wrong with this because they are independent sensors. Each sensor records data at their own rate due to sensor latency and internal clock settings. We are talking about micro seconds here but it's enough for you to see …
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Yes, this is much better and looks acceptable. Now you should only have bluetooth latency to deal with and the minor latency when synching the local clock with the sensor clock. Can you share some data between two sensors? What the time difference…
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Are we talking about a difference of 0.2 seconds here? Which would amount to user error or bluetooth latency? Can you elaborate more with data? You should know there will be human error and bluetooth latency in "Instead I tried using calibrat…
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There is not enough information in this post to comment. Please see https://mbientlab.com/community/discussion/3167/how-to-report-an-issue#latest
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So is it working ok @pekky? Can you send some data for us to look at?
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Yes that's what I want to figure out. I use the same dongles on my setup and they work just fine so either the dongle itself is busted or there's an issue with your setup. This is what we could figure out easily if you had a different dongle to t…
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It's likely the call the change the frequency is not working. Make sure you put in a valid frequency.
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I should let you know we don't support Node.JS + Windows so I may not be able to help you further (it is possible to get it to work but we don't support it in our tutorials right now).
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what does your folder look like? Do you have all the submodules installed? Show me the entire contents of your MeaWear-SDK-Javascript folder and the MetaWear-SDK-Cpp folder. What node and npm version? Can you follow each step in the install proce…
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You need to use a Linux machine for that (such as the MetaHub).
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You can connect to a few sensors at the same time. Everything is done with the MAC address of the sensor.
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Can you show me whats going on in more details including screenshots. Where are you in the install process?
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is any libmetawear.so created at all?
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@Slee, Correct. That way we can know if the issue is with the dongle or your Pi setup. You need to also test each dongle individually.
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You missed the submodules when you cloned the repository, please run: git clone --recurse-submodules https://github.com/mbientlab/MetaWear-SDK-JavaScript.git and don't forget to update!
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@dorlev22 Yes this is possible. I am not sure I understand your second question, can you elaborate?
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The thing is, we don't use our own BLE libraries. We rely on third party Bluetooth libraries and we are completely at their mercy. I will agree some BLE libraries are better written than others.
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Did you check the iOS update notes? Are others having this issue? In the past, Apple has had ble bugs in the latest iOS, please check their release notes. PS: I'm on 13.2 and the speed is still glorious. I might update later this week and let you k…
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@pekky, thanks for the update!
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Please don't use this, it is for advanced users only (you can skip it).
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Some folks are saying that some raspberry PI and OSs don't support the SAME ble dongle. If you have different ble dongles it will work. Can you try this?
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This error can be ignored: Error on line: 296 (src/blestatemachine.cc): Operation now in progress
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Unfortunately not, you have hit the limits of BLE.
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a. That's correct. You would need to downsample with the processors. To be honest, this just isn't something that we recommend doing. You should do sensor fusion OR raw sensor data. We didn't enable sensor fusion + raw data by default because the BO…
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If your smartphone can discover it but not your PC then unfortunately this has nothing to do with our sensors so it is outside the realm of this forum. It mostly sounds like your PC bluetooth drivers crashed. Maybe try to reinstall them? Maybe yo…
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* Is there anyway you can think of to log Corrected Acc, Corrected Gyro, Corrected Mag, Quaternion, and Pressure? You can log quat + raw acc + gyro + mag + pressure as long as you keep the raw data at low frequency. Again, you will fill up your mem…