After I lost my first P4 , and no chance to find it (long story..), I decided to use a gps tracker all the time.
I bought a new P4 and attached a TK102 tracker, set it to send sms every 30 seconds. I attached it by adhesive tape to the landing gear.
On the first flight (waypoint programmed flight by Litchi) after manual take off, noticed some drift in the position (about one meter); just ignored it.
Then on the programmed flight between point 2 and 3, the aircraft slowed down and started going up; this was not programmed. The horizontal speed remained at 0-1 m/s and the craft was going up (some 100 meters above the set altitude). I pressed RTH and it came back home, with 3-4 meters error.
I restarted everything and double checked the set altitude for each waypoint, everything was OK.
On the 2nd try, the exact senario was repeated. I canceled the program, lowered the aircraft to the set altitude, and continued the flight by manual control; everything seemed to be ok.
At the end, when I pressed RTH, the aircraft showed a bizarre behavior: it started to land at several meters away from the home point and worst, it was descending too fast!
I realized that it will crash, so I gave a full throttle but it was late. It hit the land so that the landing gear and the gimbal protective cover broke.
Sorry for the long story.....
After repairing everything, I installed the GPS tracker again but this time, I attached it to just one leg of the landing gear so that it wont block the sonar and visual sensors. A test manual flight, and at altitude of about 10 meters DJI Go app alarmed: "maximum altitude has reached" !!!
I was sure that its the tracker signals that interfere with something inside the aircraft causing these errors.
I never used the tracker again. BUT I see here many people are using it without problem.
Can anybody please help about the cause? Had similar experience?
Maybe its because I set the tracker to send message every 30 seconds?
This is important to me because I frequently do programmed mission flights without connection and its likely to fly away again.
I bought a new P4 and attached a TK102 tracker, set it to send sms every 30 seconds. I attached it by adhesive tape to the landing gear.
On the first flight (waypoint programmed flight by Litchi) after manual take off, noticed some drift in the position (about one meter); just ignored it.
Then on the programmed flight between point 2 and 3, the aircraft slowed down and started going up; this was not programmed. The horizontal speed remained at 0-1 m/s and the craft was going up (some 100 meters above the set altitude). I pressed RTH and it came back home, with 3-4 meters error.
I restarted everything and double checked the set altitude for each waypoint, everything was OK.
On the 2nd try, the exact senario was repeated. I canceled the program, lowered the aircraft to the set altitude, and continued the flight by manual control; everything seemed to be ok.
At the end, when I pressed RTH, the aircraft showed a bizarre behavior: it started to land at several meters away from the home point and worst, it was descending too fast!
I realized that it will crash, so I gave a full throttle but it was late. It hit the land so that the landing gear and the gimbal protective cover broke.
Sorry for the long story.....
After repairing everything, I installed the GPS tracker again but this time, I attached it to just one leg of the landing gear so that it wont block the sonar and visual sensors. A test manual flight, and at altitude of about 10 meters DJI Go app alarmed: "maximum altitude has reached" !!!
I was sure that its the tracker signals that interfere with something inside the aircraft causing these errors.
I never used the tracker again. BUT I see here many people are using it without problem.
Can anybody please help about the cause? Had similar experience?
Maybe its because I set the tracker to send message every 30 seconds?
This is important to me because I frequently do programmed mission flights without connection and its likely to fly away again.