Laura
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Mine will last a week on a single charge doing almost nothing (a demo or two a day). Perhaps try a different battery?
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Not sure about this one; it gives us very little time to test. It will likely be available in October.
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@andrew, Thanks, we are also going to add this feature as part of the API.
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When we worked with a 96x64 OLED and uploaded graphics to the display using BLE you had to wait about 3 to 4 seconds before the photo transfer finished. The short answer is BLE is not fast, it is roughly 5KBps and that might not be good enough for y…
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dhruvvarde,No one here is going to code it for you. We will help you fix bugs and give you advice but you should attempt to solve your unique problem with some coding and some cafeeinated beverages.
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Use the Android or iOS app as a starting point and start coding already!
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This feature will be entirely separate from the current MetaWear firmware and will be available as a separate download. Stay tuned for details.
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@xvision,We have to do all the soldering labor by hand in our lab and it is very expensive and very hard work. If you have more affordable services for PCB through hole assembly I would be happy to get a reference. At the current price we are stil…
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@steven,The Battery Service UUID is a standard BLE service, please read about it here: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.battery_service.xml
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Rafael, It will be possible to add an LCD or OLED when we open up I2C support on Metawear. Just so you know it is not our intention for MetaWear to ever support an LCD due to a lack of demand (i/e CUBIT).
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No this will not be available in the future. We don't intend MetaWear users to write their own firmware; if there is a feature you need you should file a metawear feature request in the proper community forum category.
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@maalouf, You might need to power cycle the board and wait 60 seconds to ensure the board is no longer in boot mode. Try again using the Android App. If this does not work then you should try the iOS App.
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I sent an email out
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Already in progress and set for release soon!
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We would need more information such as how your product is behaving and how it is configured.These types of devices last a long time because 90% of the time they are sleeping; BLE is off, LED is off... If you have BLE and the LED on then the battery…
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Looks like there are two grounds:There's two ground pins, one 'switched' power pin, and one pin that is always on. You can connect the ground of the MetaWear to the switched ground of the jst-ph connector.
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Please email us directly at hello@mbientlab.com to request this sort of documentation.
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This looks really amazing, nice hack guys!
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@samsgate,RSSI values depends on each BLE device at the circuit level (we are talking antenna strength and configuration here). -65 is a typical value but you can expect everything from -40 to -90 and the occasional erroneous 127 value.
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We don't have any plans for any MetaWear security features since they highly depend on the use case. If this is a feature you would really like then feel free to request it in the "Requests & Bug Reports" category.
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You should do that hack Eric!!!
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@samsgates, Please take the time to read and understand iOS backgrounding with this great Apple guide: https://developer.apple.com/library/ios/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingFor…
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It is used to conserve battery and put the accelerometer into an ultra low current mode. It reduces current and power draw when there is no motion.
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@samsgate, Keep reading the battery service UUID to get the battery life % and simply drive an event when it is equal to 100%.
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@samsgate, we will provide some hacks on our projects page soon including this setup.
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@samsgates, You will have to instantiate multiple instances of MetaWear objects and just record either the MAC (with Android) or the UUID (with iOS) to identify each device uniquely.
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Nope, it all depends on the environment and your device. You have to test the range of your Bluetooth device in your product environment. The range will even vary device to device. There are many factors like antenna strength, proper antenna matchin…
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@PaulC, I sent you an email on troubleshooting steps. I will also leave them here for others: * Remove anything you might have soldered to your MetaWear board (no battery, no buzzer...). * Plug in your MetaWear board to power using the micro-US…
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What did you want to do Eric?
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All the download options have been fixed.