I want to send data from Arduino Pro Mini to Multiwii with UART. I do not know how to do that. I have see in protocoll.cpp the function evaluateCommand(uint8_t c). So I think it is the right way to add a new "case MSP". But I do not know how to do that. Can anybody help me please?
Connect it to serial port. RX to TX and TX to RX. Anyway, what data? You can send/receive data through different ports/pins... There are already many projects available in the net