Hello!I just assembled my very first drone, and I’m really excited for the first flight. However, every time I ARM the drone, I notice some vibrations in the arms, when in Stabilized mode (Even Manual). On increasing the throttle, the vibrations become more prominent. These vibrations are present only when I try to balance the drone in its stable position. When I tilt the drone along the sides, it vanishes. I have calibrated the drone a lot of times, but the problem still persists. There is no vibration when I change it to Altitude mode. I am currently using the following components:
FC: Pixhawk 2.4.8
Motors: Emax ECO 2306 (1700kv)
Frame: 5 inch generic Quad frame
ESC: Littlebee 30A
I also don’t have an RC hooked up as I want to achieve completely autonomous flight (I know this is a bad idea, but I’m low on time and resources to purchase one now). I’m using Qgroundcontrol Virtual Joysticks to initiate flights.
I took a log and obtained the following results with default parameters.
I haven’t done any kind of PID tuning (Not sure how to go about it). I have tried smoothing the Actuator Control FFT graph by varying IMU_GYRO cutoff and MC_DTERM cutoff. However, across a wide range, the default ones seem to reduce the vibrations the most.
Would love to solve this problem at the earliest as I have to present this project at an expo.
Thanks a million!