Need help with finding Bangle.js watch during Bluetooth scanning

[espruino-discuss2]

Posted at 2023-06-01 by user15556

I am currently working on developing a desktop app in C# for the Bangle.js watch. My objective is to establish a Bluetooth connection with the watch and retrieve data from it. However, I am facing an issue during the scanning process.

When I initiate the Bluetooth scanning using C#, I am unable to detect the Bangle.js watch in the Bluetooth area. I have tried different scanning methods and have ensured that the watch is in pairing mode and within range of my computer's Bluetooth.

I have also checked that the necessary Bluetooth libraries and packages are installed correctly. However, despite my efforts, I haven't been able to locate the watch during the scanning process.

I would greatly appreciate any guidance or suggestions on how to resolve this issue. Has anyone else encountered a similar problem while working with the Bangle.js watch and C# Bluetooth scanning? If so, I would love to hear about your experiences and any potential solutions you have found.

[espruino-discuss2]

Posted at 2023-06-01 by @fanoush

Are you scanning for Low Energy devices? Classic Bluetooth != Bluetooth LE

in BleConsole this is done like this
https://github.com/fanoush/BLEConsole/blob/master/BLEConsole/Program.cs#L107
you watch and accumulate devices and then you use device list later
https://github.com/fanoush/BLEConsole/blob/master/BLEConsole/Program.cs#L546
https://github.com/fanoush/BLEConsole/blob/master/BLEConsole/Program.cs#L647

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Posted at 2023-06-01 by @fanoush

Also it may be easier to use Python via https://bleak.readthedocs.io/en/latest/ or espruino-cli which recently got better with Windows support and BLE connections work mostly just fine on Windows 10/11 now

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Posted at 2023-06-05 by @gfwilliams

Also worth adding that if the Bangle is already connected, it won't (by default) send advertising data. So maybe make sure it's not connected first - you could use NRF Connect on a phone to verify