I already tested the mavlink connection with an older raspberry pi connected to the drone and Wireguard VPN with a 4g modem, so in practice I already tested it out and it works.
I read that you bought patch antennas. Did you mount them on the drone, and has the range increased?
I did buy them but did not get to use them. The batteries were bloating up more and more so in the end I decided to go for a Mavic Mini.
Many thanks, very helpful.
please admin permission failed to upgrade CFLY Faith 2 can it still be fixed please help me from Indonesia
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I need help if possible. I didnât make the usb connection but I connected via wifi with the qgroundcontrol app. Unfortunately I cannot understand what are the parameters that change the battery voltage. I bought 2 2200mah batteries but I canât do more than 6-7 minutes of flight. When I recharge the batteries with imax6, only 1250 mah enters the battery, i.e. the battery is only used for just over half. Unfortunately in the qgroundcontrol parameters I donât find any reference to the minimum or maximum voltage. I searched the internet for hours with no result :-(. Thanks!
This is just some information that I collected, I donât have the drone anymore but didnât want to delete this info, so here:
Drone FTP server:
Username: HY819
Password: 1663819
USB port:
+ Red
D+ Yellow
D- Black
GND Green
cd /home/pi/.local/bin
mavproxy.py --master=/dev/ttyACM0 --baudrate 111100 --out 10.6.0.4:18545 --aircraft EX4Pro
4.00V (12V) 84%
3.96 (11.88) 77%
3.93 (11.79) 70%
3.90 (11.7) 63%
3.86 (11.58) 56%
3.83 (11.49) 48%
3.80 (11.4) 43%
3.76 (11.28) 35%
3.73 (11.19) 27%
3.70 (11.1) 21%
3.67 (11.01) 14%
Land now voltage: 10.5v
Stock battery: 165g
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End of my adventure with ex4 pro 
I connected the drone with qgroundcontrol to see how to change some parameters. I HAVE NOT CHANGED ANYTHING.
After 7 minutes of connection the drone turns off, but it is normal nothing happens, in fact it restarted and everything is ok.
After 4-5 shutdowns, without changing any parameters, the drone has decided not to turn on anymore, or rather the whistle turns on, at the end of the whistle it turns off. It does not finish calibrating the gimbal, it does not turn off before time. Obviously it does not connect to the wifi, it does not have time, so you can no longer enter with qgroundcontrol, at least via wifi.
I tried everything, I also soldered 4 wires on the usb port under the battery and connected it via usb. I found the backup parameters, saved by a user on a forum, it doesnât reload them because it says they are the same as those in memory. Of course I just looked and didnât change anything.
Connected to the pc, the drone turns on, the gimbal calibration finishes and it works, but there is no wifi network (I think itâs normal since it is connected via usb)
As soon as I unplug the USB cable it turns off.
Advice? in addition to throwing it away (it was new )
To calm down I took the old hubsan h501s that flies like an eagle despite the 2000 blows 
Shutting down after a few minutes is normal when on battery and not flying - only when connected via both USB and with a battery connected will it remain powered on.
My parameters are on the RCGroups thread if you wanted to try those:
The only thing I can think of causing the quick turn of would be a low or dead battery - or a battery setting that makes it think it has to turn off immediately but it sounds more like a dead battery?
the battery itâs new, and i tried with 3 battery 
I tried with your params on qgc and strange, message âparams are the same impossible to loadâ.
But obviously it is impossible for the drone to have the same parameters âŚ
In mission planner I donât know how to save and reread the parameters âŚ
ok, i load your param, the drone donât sleep, but the light remain flashing red and no wifi
Hello.
I need to modify the params for for the calibration right and setting RTL / Land / Alert voltages, with a Lipo Battery 2200mah.
Can you help me with the list and correct parmams to change in QGC or Mission Planner?
Best regards
To connect to Eachine EX4 using Qgroundcontrol/MAVlink running on a computer, first run this script (Python) - basically the CFly Android sends two commands to the drone via port 4646 to bind the drone to your IP before start using the MAVlink protocol: Iâve found that using the PCAP Remote app and Wireshark.
My intention is to control the drone via mavsdk over WIFI: for that I have to set ARMING_CHECK to disable âRC failsafeâ beforehand.
hello, I was trying to connect 3s Li-Ion, 18650 Samsung inside the original battery box.
The original charger charges the batteries but they stay at 12.4v but the drone is at 11.4v.
The drone turns on and takes off, but after a few seconds it goes alone to the left side and I lose control of the drone, I can only lower it, and it only stops when it falls to the ground.
Any idea ? Or does it just not work with these batteries?
Thanks
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The originals are Li-Hv batteries ⌠you really shouldnât use the original charger on them., in fact in my opionion the original charger should only be used for lining a dustbin or used as a basis to make an adapter like I have.
The change of battery will need it recalibrating via Mission Planner and gyros / compass calibrating to stop if flying off to one side.
Hope that helps
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thank you, I never used Mission Planner does it have to be with a cable that connects to the drone? and computer?
It is best that way. If you change batteries you should set the new voltage - see my details above, the RC Groups section Eachine EX4/JJRC X12/C-Fly Faith 3-Axis 2K Video drone - Page 14 - RC Groups and my video too Eachine EX4 Finally Flyable! - All of my mods and improvements - for JJRC X12 / CFly Faith too - YouTube
Please remember to Like and Subscribe 
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hello, I found this video on youtube, do you think itâs easier to do? the transformation wouldnât be a problem for me, but will the same thing happen if the drone goes to the side by itself? thanks
Wow - canât believe he used one of my photos without even asking!!
That is my photo of the inside of the charger!
Anyway ⌠do it that way if you wish but as has been covered previously here there is little point in using lower capacity batteries as you just reduce your flight time.
The originals are LiHv ⌠the ones he uses are LiPo ⌠so even at the same mah rating the âcapactyâ will be less, or certainly no more.
It is your choice but of you use LiPo you still need to reprogram as the voltage is different to the original.
If you want to repack with LiHv then that would be OK but we do it our way to make use of very cheap 3S 2200mah LiPo cells that give longer flight times.