Bitcraze Forums

Hello everybody
I am lost. I tested today last firmware (last week). I changed all four motors with balanced propellers. I verified the rotation sense. There is no hair in th axis. Also no grass although I am in the garden. No wind, sunshine, not heavy sun, it was 17h.
The quad flies 10cm, then goes on the back. I tried a lot of flight. Same behavior.
I thought of bad electrical contacts. But :

This is the console initiation message :
IMU: MPU9250 I2C connection [OK].
IMU: AK8963 I2C connection [OK].
IMU: LPS25H I2C connection [OK].
DECK_DRIVERS: Found 6 drivers
DECK_INFO: Found 0 deck memory.
DECK_CORE: 0 deck enumerated
EEPROM: I2C connection [OK].
AK8963: Self test [OK].
LPS25H: Self test [OK].
SYS: Free heap: 4752 bytes
There is no deck. Only shock-absorbers as it can be seen be seen on the attached photo. Downwards are some information from the plotter. The cf is maintained fixed in horizontal position:
Stabilizer A slight drift can be seen for yaw. Not really a problem.
gyro acc motors I do not understand the the variation for cf and throttle are fixed... Battery is full charged.
Regards.
Jean-Claude

Hi
Another graph. The plot of stabilize.yaw shows heavy discontinuities, around 180°. Is it the problem of brutal lost of stability? Regards
Jean-Claude

Following:
Other very interesting plot, the command of motors.
The throttle est fixed, craft was tilted to put it horizontal: Cf is fixed horizontal, I increase throttle progressively: Cf is fixed horizontal, I put on althold mode: Is my crazyflie entirely out of service (many heavy shocks when beginning to fly)?
Jean-Claude

Hi
You can see the logs of three flights. The first and second are quasi-normal. Le last one ends with a crash on the back. Stabilizer.thrust presents large oscillations...