I got these hoping that they were HC-05 replacement (as mentioned in the product description from the buyer), but I can't get them to work the same way. They won't respond to UART commands.
Actually they don't even broadcast their presence and thus I started to think the pin order might be different on that version, so I though I'd check the pinout for the chip and verify. Where this gets bad is that I can't even find a datasheet that matches the chip.
The chip is 32 pin on there and the only datasheet I find for BK3231 is a 56-pin QFN chip.
Contacting the vendor, he tells me that he can't find the datasheet either... LOL WTF! Is this just a scam?
In any case, I kept searching google image and found a single post from swe-dude that seemed to have the module to work, so, now, I don't know if that's just a scam or if I should try to put some time in getting that to work.
Does any of you got that thing to work?
Not sure where to start with that?
I didn't find the right solution from the Internet.