I bought a few of these with the intention of making a few Bluetooth mouse projects, since it's stated that it has HID functionality: "Bluetooth Profile HID v1.1 SPP v1.2." Serial mode works. So that part is great, but not the part I needed. I messaged the seller a week ago, letting him know that I had been unable to get HID mode working and asking how it was supposed to be enabled. He quickly responded, saying he would try to get that part figured out and get back to me.
If anybody can help figure this out, that would be awesome too so I could change my review :)
Response from BurgessWorld Custom Electronics | Oct. 28, 2019
Hi, I am following up on the issues you had with this item. It turns out that this module does not support HID mode, even though all of the suppliers I have contacted say it does - the functions are simply not in the firmware. I have noted this on the product page and will stop selling them when the current stock is exhausted.
However, I have found another bluetooth module to source that actually does HID mode and is configurable with a lot of information online explaining how to set it up and use it in both modes. It is the HM-10, which was a previous iteration of this module that has better firmware and community support. I have a few on order and would be happy to send you one free-of-charge if you would like.