The error was making two duplicit instances of the drone...
1) var drone tello.Tello
2) drone := new(tello.Tello)
package main
import (
"log"
"flag"
"os/exec"
"time"
"github.com/SMerrony/tello"
)
var (
drone tello.Tello
x11Flag = flag.Bool("x11", false, "Use '-vo...