AirPort provides a firmware option that allows you to turn a regular ExpressLRS transmitter and receiver pair into a bi-directional transparent serial data link, over the air. Which is like turning the ELRS device into Xbees. We can set up a pair of ELRS AirPort devices to transmit the MAVLink command between the ground station and the air. Also, the AirPort has the advantage of a cheaper price and a longer effective range of communication. Cheaper and better, that is why we use it.
Inside the box of dash lines is what we are trying to achieve. And in this doc, I am going to take RadioMaster Ranger and the RadioMaster RP1 as an example to show you how to set up the ELRS AirPort on TX and RX.
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