HI guys.
Problem: i want to extend range on my phantom 3 standart / 4k. My Drone locked in CE mode and won't fly more then 500m.
Solution: both Drone and RC use linux so we can force it to switch whatever we want. FCC mode extend transmitter power, 27db mod boosting video link channel.
How it works: unlocking telnet on RC and Drone. Making cron task setting FCC mode & 27db on RC and after sending telnet command to do the same on Drone. (it easy to make cron last on drone too, but I think this way it's safer for drone to initiate home return if it will be out of range and remote controller can't reach it with telnet command)
How to do that: we need to modify 3 files.
Remote control.
Connect to drone wifi. Use ftp to get inside. ip: 192.168.1.1 , user: root , password: Big~9China
Create file (or copy one from archive you download from here) "root" (name without brackets) in /etc/crontabs . Put this into the root file
* * * * * { sleep 1;echo "if [ `/usr/sbin/iw reg get | sed -n 1p | cut -c9-10`!=US ]; then /usr/sbin/iw reg set US && iw dev wlan0 set txpower limit 2700; fi" ;sleep 1;} | telnet 192.168.1.2 && if [ `/usr/sbin/iw reg get | sed -n 1p | cut -c9-10`!=US ]; then /usr/sbin/iw reg set US && iw dev wlan0 set txpower limit 2700; fi
Save it and check that file permissions set to 775
Edit file (or replace from archive you get from here) djiled.sh in /sbin/ so it looks like that
#!/bin/sh
telnetd -l /bin/ash &
mkdir -p /var/spool/cron
ln -s /var/spool/cron/crontabs /etc/crontabs
/usr/sbin/crond
while [ 1 ]
do
echo 1 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
echo 0 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
done
Save it and check that file permissions set to 775
Remote Control - done
Drone.
Use ftp to get inside drone. ip: 192.168.1.2 , user: root , password: Big~9China
Edit file (or replace from archive you get from here) djiled.sh in /sbin/ so it looks like that
#!/bin/sh
telnetd -l /bin/ash &
while [ 1 ]
do
echo 1 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
echo 0 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
done
Save it and check that file permissions set to 775
Drone - done
Restart your RC and Drone and you good to fly.
Bonus. Now you can use telnet to connect you your RC and Drone.
All credits goes to this guy https://www.youtube.com/watch?v=oivrxYNVM-E
Problem: i want to extend range on my phantom 3 standart / 4k. My Drone locked in CE mode and won't fly more then 500m.
Solution: both Drone and RC use linux so we can force it to switch whatever we want. FCC mode extend transmitter power, 27db mod boosting video link channel.
How it works: unlocking telnet on RC and Drone. Making cron task setting FCC mode & 27db on RC and after sending telnet command to do the same on Drone. (it easy to make cron last on drone too, but I think this way it's safer for drone to initiate home return if it will be out of range and remote controller can't reach it with telnet command)
How to do that: we need to modify 3 files.
Remote control.
Connect to drone wifi. Use ftp to get inside. ip: 192.168.1.1 , user: root , password: Big~9China
Create file (or copy one from archive you download from here) "root" (name without brackets) in /etc/crontabs . Put this into the root file
* * * * * { sleep 1;echo "if [ `/usr/sbin/iw reg get | sed -n 1p | cut -c9-10`!=US ]; then /usr/sbin/iw reg set US && iw dev wlan0 set txpower limit 2700; fi" ;sleep 1;} | telnet 192.168.1.2 && if [ `/usr/sbin/iw reg get | sed -n 1p | cut -c9-10`!=US ]; then /usr/sbin/iw reg set US && iw dev wlan0 set txpower limit 2700; fi
Save it and check that file permissions set to 775
Edit file (or replace from archive you get from here) djiled.sh in /sbin/ so it looks like that
#!/bin/sh
telnetd -l /bin/ash &
mkdir -p /var/spool/cron
ln -s /var/spool/cron/crontabs /etc/crontabs
/usr/sbin/crond
while [ 1 ]
do
echo 1 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
echo 0 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
done
Save it and check that file permissions set to 775
Remote Control - done
Drone.
Use ftp to get inside drone. ip: 192.168.1.2 , user: root , password: Big~9China
Edit file (or replace from archive you get from here) djiled.sh in /sbin/ so it looks like that
#!/bin/sh
telnetd -l /bin/ash &
while [ 1 ]
do
echo 1 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
echo 0 > /sys/devices/platform/leds-gpio/leds/tp-link:green:system/brightness
sleep 1
done
Save it and check that file permissions set to 775
Drone - done
Restart your RC and Drone and you good to fly.
Bonus. Now you can use telnet to connect you your RC and Drone.
All credits goes to this guy https://www.youtube.com/watch?v=oivrxYNVM-E
