Unfortunately, today we have experienced the same issue on six different F450 using Latest V1.5.5.
The issue is the following:
- Emergency motor stop is ON,
- Arming switch is pressed
- Quad is armed
- Emergency motor stop is Disabled
As soon as disabled, even if throttle is low in stabilized mode, it performs a Violent Agressive Uncontrollable Roll During Takeoff.
Here is a video that shows how it behaves after that as we have not disconnected the QUAD, it is then connected to QGC and this is how it behaves.
Here is the LOG file,
as you can see, MAP is all over the place. This is not true as it never took off!
At first, reformating the uSD card and re performing sensor calibration was fixing this issue, but apparently it is not related to that.
What I can say is that I tried to perform all the sensor calibration using only the USB cable, it was not fixing it (even after a reboot). Then, I have connected the battery, performed all the calibrations and it was working.
1- regularly we are getting low power avionic messages
2- temperature is changing the day 5oc in the morning to 20oc in the afternoon, temperature related?
3- Sensors like compass, etc. are calibrated via WiFi.
4- We are using Spektrum AR7700 PPM receiver.
5- Last time I saw this, RC PPM INPUT was unstable, the Receiver’s cable was not connected properly, and using TOOLS -> WIDGET -> RC RAW, channels were all over the place.
6- With the ACSP5 (PixRacer’s power Module) a capacitor comes with it, what is it used for?