Write in a comment how you would use this thing in your projects.
The price is not very high, delivery is also only 13 rubles. The size of the internal memory is 4 mg, which may seem very small for you, but believe me, this is quite enough. The reviews are mostly positive, the complete wiring and module diagram are in the product description from the seller, so if someone needs it, then a link to this product is under this article.
I think many people will appreciate this module and maybe even order it for themselves, because you yourself understand that controlling a robot using a phone is very interesting and even spectacular for some.
Well, thank you all for your attention and good luck in future projects, friends!
Cost: ~ 114