It's controller will be a Nodemcu (ESP8266 0.9).
transmit data from an DTH11 - sensor
It would be very nice if the Rover could send pictures in low resolution as well
but it's range is too short.
For 433 and 868 Mhz, I could not find the range
and, the biggest problem, how to make the 5V to power the two 12V motors we use.