Difference between revisions of "Multicopter tuning"
From Fixme.ch
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=== Filters === | === Filters === | ||
| − | * Starting from Betaflight 3.2 filters | + | * Starting from Betaflight 3.2 filters are a different topic because it supports dynamic filtering |
| − | * Activate dynamic filters right away, it'll detect unwanted | + | * Activate dynamic filters right away, it'll detect unwanted frequencies in the gyro and filters 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 | * 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 | + | * Always check for motor temperature when disabling filters after a calm 30s-1mn flight |
=== PIDs === | === PIDs === | ||
| + | * Default PIDs are usually very good in Betaflight, most of the time you'll only want to increase P until it oscillates and lower it a bit | ||
* Activate antigravity mode to fix pitch wobbles on throttle cut | * 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 | + | |
| + | ==== TPA ==== | ||
| + | * If you have vibrations or stange behavior at high throttle, note the value of the throttle and lower TPA breakpoint near this value | ||
| + | * Attenuate or accentuate effect of tpa by modifying the value (in percent) | ||
== See also == | == See also == | ||
* [[multicopter]] | * [[multicopter]] | ||
Latest revision as of 15:44, 22 October 2017
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
- Rates can be configured at your own preferences
- Usually racers will prefere low rates (without rc expo) and freestylers will prefer high rates
- ~600 degree/second for racing and 1000+ degrees/second for freestyle
Filters
- Starting from Betaflight 3.2 filters are a different topic because it supports dynamic filtering
- Activate dynamic filters right away, it'll detect unwanted frequencies in the gyro and filters 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 after a calm 30s-1mn flight
PIDs
- Default PIDs are usually very good in Betaflight, most of the time you'll only want to increase P until it oscillates and lower it a bit
- Activate antigravity mode to fix pitch wobbles on throttle cut
TPA
- If you have vibrations or stange behavior at high throttle, note the value of the throttle and lower TPA breakpoint near this value
- Attenuate or accentuate effect of tpa by modifying the value (in percent)
