I just bought for less than 20EUR this product:
It looks it's a white label base, used by italian company and sold in france, I've seen a couple of very similar products.
Anyway , I partially teared down the controller it is using a XN297 and an other unidentified chip (STM32? probably).
My current interest, is into replacing the embedded code by opensource alternatives, I am collecting info on:
Any hints welcome.
PcB: yellow board?
GB-TKM218LTX 2016-07-11 90 VO 1.5MM
Transciever: 7 pins module
XN297 ~?1615b? (or 16156, 1615x)
IC: looks like:
Mem: ATMEL 711 24CO2N
Used in many drones