Is it possible to make an RC Car which has both wifi controlled system and bluetooth controlled system. When you flick a switch the RC car can be controlled via wifi connection from a webserver and when the switch is again flicked the RC car can be controlled via bluetooth connection with master-slave configuration
it is possible - you would require a WiFi receiver and Bluetooth receiver
you could use a ESP32 which has onboard WiFi, Bluetooth Classic and BLE
by using a switch you could select the communiction you wish
I would recommend getting it working with one communications system then add other
both WiFi and Bluetooth have fairlly limited range, e.g. 10 metres typical
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