Multicopter tuning
From Fixme.ch
Build
- The tightets the build, the cleaner the flight will be
- Tighten all the screws
- Fix the cable using hot glue for instance
- A good tip, it putting a hot glue drop then cleaning it with cardboard, that way you only have the right amount of glue and it goes in the small holes
- Also hold the parts for at least a minute in the desired position so the glue can solidify
- Weight distribution is very import, your quad should have most of its mass in the center and equal distribution of weight for each axes
Betaflight
Expo
- If you have trouble being precise, do not hesitate to add expo to stick input
- It's increasing travel of sticks in the middle for the same amount of movement and decreasing it at the end for faster response
- Never add expo on the transmitter, you'll loose some stick definition
- Add RC expo on Betaflight, starting from 0. 30% (0.3) RC expo is a good starting point
- Add Throttle expo if you have trouble holding altitude, it's a very good way to control height and altitude
Rates
- Race can be configured at your own preferences
- Usually racer will prefere low rates (without rc expo) and freestyler will prefer high rates
- ~600 degree/second for racer and 1000+ degrees/second for freestyle
Filters
- Starting from Betaflight 3.2 filters is a different topic because it supports dynamic filtering
- Activate dynamic filters right away, it'll detect unwanted frequency in the gyro and filter it
- On a clean build (tight and weight well distributed) you can switch low filter pass to PT1 and disable Gyro Notch filters 1 and 2
- Always check for motor temperature when disabling filters
PIDs
- Activate antigravity mode to fix pitch wobbles on throttle cut
- If you have vibrations or stange behavior at high throttle, note the value of the throttle and lower TPA near this value