I tried to throw a TTL module onto this a quick build and it was kinda fine, I had set it up from when I used it on my Veiftech - DIY upgraded Leiftech V2 this was important because every time I tried to connect the android app it would crash.
when I got to Carve the LEDs were not reacting at full speed, idk maybe the heat? then it quit working entirely, both LEDs turn on then one turns off. it was on a 12S battery.
I am not sure where to look for the problem.
The other unit I think was fine if I could have connected the app.