Im becoming crazy with this.
I read your conversation about the GATT profile, where the BT is broadcasting data but on what way I can read it? I need to pair the computer? what software can I use to debug this broadcast? Cannot do a normal socket comunication in two ways?
Upd: I started writing this one at lunch and now at night my microbit stop working (Had a issue since i bought it). Because I love JS and I want to start in this world, I though to buy a new board but im the worst person with electronic (Im front end dev). Your others board have the same API or are more flexible to do comunication with Bluetooth? Which one include BT?