Example code for connecting to the idotmatrix device in a bluetooth compatible browser.
Check out https://jaku.github.io/idotmatrix/ for the demo project which will watch for emotes used on the given Twitch channel.
Just type in the channel name, and then click the Connect iDotMatrix button and then select the IDF-19000F device. If you have a different device with a different name, you will need to modify the code to match.