Adding WiFi control to RVR

Hello all,

I managed to add a nodeMCU (ESP-12E) board, along with some organs like digital compasses and ultrasonic range finders to the RVR. I am communicating through UART, and I was able to control it with my python TCP server.

See it in action:

The firmware compiles using the Arduino standard libraries:

I took a lot of advice and ideas from the following projects:

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