Recent content by herkam

Tested the new firmware with one flight and my impression was that the yaw drifts issues was reduced but NOT removed. I got one yaw drift a couple of minutes after take off but it never repeated during the remaining flight. When I started moving forward after the yaw drift it was moving in...

This issue remains me about the issue I had with an electronic compass I tried to use on my motor boat. The compass was from a manufacturer with good reputation, no cheap thing.... The compass had three magnetic sensors, three accelerometer sensors and three gyros so all three directions where...

If you send it in you will probably get another P4 Pro V2 with yaw drift, I haven't read about a non drifting P4 Pro V2 yet.... Hopefully DJI will fix this silently in later P4 Pro V2 revisions.... /hakan

Hi! Welcome to the "club" of V2 yaw drifting! The V2 IMU has big problems either in hardware of software and my guess is that DJI has tried to hide the problem in the latest software with an ugly fix that doesn't work.... My guess on the fix.... The fix that can be used if they are stationary...

Noticed one thing about the yaw drift, the gimbal was yawing in the other direction to compensate for the drift! That means that the live feed you saw on the screen was not moving but the P4 was drifting away. Either the gimbal knows the correct yaw for some reason or it uses object recognition...

Hi! Did a simple hover test today, had the P4 Pro V2 hovering for a minute, turned it 180 and took the hands off the controller and it started drifting in yaw..... This is a very nice situation for the IMU, no accelerations, turns or other stuff just a gently rotation of the craft. /hakan

Hi! Same issue here with my P4 Pro V2, drifting in yaw and not flying straight. Done all calibrations, latest software and this yaw problem is really BAD! It is strange that is sometimes hovers without yaw drift and flies straight...haven't found any pattern when it drifts or not yet My P4 was...

It works good with the P4 Pro V2, both camera control with limited pan and pan using yaw of the drone. The cross hair shows the heading of the craft, if you move your head to the left the cross hair moves to the right since it shows the craft heading.. I still have issues with big yaw offsets...

Hi! Calibrating the P4 in a cold state doesn't make sense, you should do it right after at least 10 minutes flying so you know that all electronics has a stable temperature. The bias for the acc and gyros should be as low as possible when you are flying, not when you are in the fridge. This is...

I'm using the latest FW but had big issues that it wasn't tracking properly. For example, I had a house in the middle of the screen 400 m away, pushed the stick forward and the house would quite fast move away from the middle of the screen and finally out of view due to the fact that the drone...

I had a distance of 2 km to the the P4 Pro V2 with googles connected when I started losing connection, height was 120 m and wifi was disabled on the android tablet, only 4G enabled. Wifi seems to create a lot of problems for the googles? I attached the external antenna to the googles (not sure...

Thanks for the picture, that gave me a good laugh :) I used the metric system since I've grovn up with it and it makes all the formulas simple without any constants. I should have written speed in miles to make it easier for other readers also...but I was lazy...but I called the topic milage ;)...

I've heard numbers around 45 km/h for best "milage" and used that for my litchi missions but then I thought that it would be nice to see if the theoretical values match with the real values.... In the litchi log you have current draw and battery voltage which gives you the power consumption in...

It would be interesting to do a "cold IMU" calibration and see if they create a compensation map for the altitude sensor during the heat up of the P4. But that requires that they have a temp sensor that measures a temp quite close to the pressure sensor, would be interesting to know! The IMU...

Hi! I did some hovering today to try to figure out what the pressure sensor (altitude sensor) is doing. My conclusion is that it drifts due to the heat buildup in the P4. From a cold P4 the heat build up will lead to an altitude change of around 8-9 meters, it always changes to greater altitude...