Puck.js automatically disconnects after sending code - nothing stored though

Sorry you're having issues...

SEND ERROR: NotSupportedError: GATT operation failed for unknown reason.

This might sound stupid, but that error actually comes from your main computer, not Puck.js - so I think it's an issue with the computer - I bet it'd work fine from another.

Please can you make sure your operating system isn't paired with the device via the OS's bluetooth menu? Also you could try rebooting your computer just in case?

What's likely happening is:

• You turned your Puck into a bluetooth keyboard
  
• You then paired it with your PC, all was fine but the PC now thinks it's a keyboard and tries to auto-connect whenever it sees the device
  
• Now you change the code on the Puck (or maybe it was written into RAM so it disappeared when you removed the battery). The Puck is no longer a HID device
  
• The OS still tries to auto-connect, but when it sees the Puck is no longer a HID device, it disconnects - it doesn't realise that you're actually trying to program it with the Web IDE as well.
  
  

Hope that helps!