Shrediquette - the award-winning multirotors by William Thielicke

This is a follow up to the previous post on tilt compensation . I made a video where I explain what FPV camera tilt compensation is needed for, how it works and how it looks like in flight: https://youtu.be/gXeaINFpvow In FPV camera tilt compensation, control inputs (RC transmitter --> FC) are transformed to the local frame of reference of the camera . The control outputs (FC --> motors) may additionally be transformed to the local frame of reference of the propellers (if e.g. the props are tilted or the FC is mounted at an angle - use parameters like 'board align' for control output transforms).

Almost every 'serious' FPV racer is tilting the FPV camera up in order to have a better image during fast flight. Angles between 10 and 35 degrees seem to be common. E.g. I am using 25 degrees. But tilting the camera with respect to the multirotors horizontal plane has a side effect on the controls (maybe you never thought about it, because you are so used to flying with this side effect). Just to make the effect easier to visualize: Imagine you drank a beer too much and now you suddenly think you are Charpu , Mr Steele or Mattystuntz . You mount your FPV camera with 90 degrees tilt (pointing up vertically) because your best friend told you that all the pros do it like this. In this case, your roll and yaw control will be interchanged: When you move your RC sticks to roll left, your copter will roll left, but looking through the FPV camera, it appears as if you are yawing to the left! And if you move your RC sticks to yaw left, your copter will of course yaw left, but the im...

As some of you might know, I am using Scorpion S-2212-26 motors for quite a while now. I am extremely happy with these motors. Short time ago, SCORPION POWER SYSTEM LTD offered to provide three recently developed motors (prototypes of the SII-2212-960KV) for tests with my tricopter . Of course I didn't say no...!! I had the opportunity to test them recently, and these motors are absolutely great! They seem to be even more efficient and powerful than the S-2212-26 I used before. These motors stay absolutely cold (prop: EPP 10x4.5'') even if I do aerobatics with my copter. I am not a real expert with motors, but if no heat is produced, all the available energy should be converted to mechanical energy/ thrust... And that is also what it feels like :-D . So, I would absolutely recommend to use these motors with my tricopter! And last but not least, they look pretty nice...