This is a really fun toy; I bought with the RoverC to control it, but soon thereafter found other uses for it. But be warned - the example code I've found so far is sparse and only includes a simple wi-fi client interface for use with another esp32 acting as server. This is fine unless you want to use wifi on the server for other things, which is why I've started writing up a BLE interface for the JoyC (a non-trivial project). But for what it is, the JoyC is a good deal and nicely made.