Pilot:
Fincky
fundamentals
Are you confused about what “filters” even are when folks mention them in relation to quadcopter flight control firmware? Whelp, look no further!! The below 3-videos work from the ground up to keep it very basic in regard to what filters are; some of the terminology around them (eg. “cutoff”, “phase delay”, etc…); and why they are a necessary evil.
Now that you have the above basics down, lets take this a little further. What the term “gyro noise” means?
The below reviews how simple the PID loop really is and how D-term is the necessary evil monster within the PID controller in terms of amplifying motor noise.
How Fast can Motors Actually Respond?
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
D -> P-> i Relationship | THE PROOF!
These are some great runs by Tim Heebs on how P:D balance is just a scientific fact, and that when you find your quads P:D balance, you can move the gains up (or down) and the response will remain the same. Then for PEAK FLIGHT PERFORMANCE, you move the gains up to the D-Max, which […]
How to Reduce the last 20% of your Prop Wash
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Tuning a 10″ – Part II —- r2 is NO JOKE!
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
8k vs. 32k Sampling Rates
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Notch Filters VS Lowpass Filters (notches FTW!!)
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
D-term Goes Nuts! | Filtering to the Rescue
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $5 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
BetaFlight Filtering & ATTENUATION worksheet
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $1 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
BF 3.4.x-Filter Delay Calculator v2
Become a Patron to UNLOCK this content!To view this content, you must be a member of UAV Tech Patreon at $1 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Input Delay | Phase Delay | Sampling Delay
A review of the different delays you experience in flying your kwad copter. The biggest piece of this for flight performance (jello and prop wash) is keeping filter delay to a minimum. Links to my files: tiny.cc/filtercalc Study links: – Demo: http://cristal.univ-lille.fr/~casiez/1euro/InteractiveDemo – Abstract: http://cristal.univ-lille.fr/~casiez/1euro/ – Paper: http://cristal.univ-lille.fr/~casiez/acm.php?id=N05397
One of the most powerful filters I have even seen is the Dynamic Notch. It reads the incoming data in the signal (gyro or D-term) and automatically configures the at Notch Filter to COMPLETELY attenuation (smooth out) any vibration in the signal at a specific frequency. The below videos talk about how the Dynamic Notch works and furthermore I reference to videos by others in regard to how the algorithm reads the incoming signal data to configure the notch.