Quick Answer
PID tuning adjusts how your flight controller corrects errors between commanded and actual attitude. In modern Betaflight (4.5+), slider-based tuning handles 90% of builds automatically. For the remaining 10%, adjust P, I, D, and FeedForward gains in small increments using Blackbox data until the quad feels locked-in without oscillation, bounceback, or drift.
What Are PID Values in FPV Drones?
PID stands for Proportional, Integral, and Derivative. Betaflight adds a fourth term, FeedForward (FF). Together, these values control how aggressively the flight controller corrects errors between where you command the drone to go and where it actually is. The PID controller runs at 8kHz on most modern FCs, making thousands of corrections per second.
The relationship between these four terms determines how your quad flies. Here is a breakdown of what each does, what happens when it is too high or too low, and which symptoms to look for:
| Term | What It Controls | Too Low | Too High |
|---|---|---|---|
| P (Proportional) | How hard the FC pushes toward the target rate. Responsiveness and sharpness. | Sloppy, loose, wanders. Slow oscillation. | Fast high-frequency oscillation. Overcorrection. |
| I (Integral) | Accumulated error correction. Holds attitude against wind and off-centre CG. | Drifts in wind. Won't hold angle. "Skating" feeling. | Stiff, robotic feel. Bounceback after flips. Low-frequency wobble. |
| D (Derivative) | Damping. Predicts where error is heading to reduce overshoot and prop wash. | Bounceback after flips. Severe prop wash on descent. | Motor heat. High-pitched buzzing. "Mushy" response. Can burn motors. |
| FF (FeedForward) | Stick-input boost. Pushes the quad into turns instantly without waiting for error. | Sluggish stick response. Delay between input and movement. | Twitchy. Overshoot at start of flips. Bumpy in rough air. |
The P gain is your primary responsiveness control. Higher P means sharper tracking, but push it too far and the quad oscillates. The I gain builds up over time to fight persistent drift from wind or unbalanced weight distribution. The D gain acts as a shock absorber: it dampens overshoot from P and reduces prop wash oscillation during descent. Modern FCs like the SpeedyBee F405 V5 stack process D terms fast enough that Dynamic D can keep motors cool in cruise while boosting damping during aggressive moves.
FeedForward: The Fourth Term Nobody Mentions
FeedForward is the most under-discussed PID term, yet it has the biggest impact on how connected your sticks feel. FF pushes the quad into a turn the instant you move the stick, rather than waiting for an error to develop. It cannot cause oscillation on its own, which makes it the safest gain to increase when your quad feels sluggish on centre sticks.
For freestyle, a FeedForward transition value around 0.1-0.5 softens the centre-stick feel for smoother cinematography. For racing, leave transition at 0 for maximum directness. If your quad overshoots at the start of a flip, reduce FF before touching D.
How to Tune in Modern Betaflight
Before touching any PID values, get two prerequisites right. First, enable bidirectional DShot and RPM filtering on your ESC. RPM filtering removes motor noise at its source, which means the PID controller sees cleaner data and you can run higher gains. Second, make sure your dynamic notch and low-pass filters are configured. Filters that are too aggressive add delay and make the quad feel sluggish; too little filtering causes oscillations that mimic bad PID values.
With filters sorted, Betaflight 4.5+ uses slider-based tuning that maps a 0.5-2.0 multiplier onto a base tune. For most builds, the defaults fly well. If you need to go deeper:
- Master multiplier: Start at 1.0. Increase for sharper response, decrease if you get oscillation.
- P: If the quad oscillates rapidly at full throttle, reduce P on the affected axis. If it feels loose, increase P.
- D: If the drone bounces after flips or has bad prop wash on descent, increase D. If motors run hot, reduce D and check filtering.
- I: If the quad drifts in wind or won't hold attitude, increase I. If it feels sticky and resists stick release, decrease I. Anti-gravity mode temporarily boosts I during throttle punches to prevent nose-drop.
- TPA (Throttle PID Attenuation): If oscillation only appears at high throttle, raise TPA. This reduces PID gains above a throttle threshold so a tune that works at hover does not overcorrect at full throttle.
Make one change at a time and test between each. Never adjust more than one gain at once, or you will not know what helped.
Common PID Problems and Fixes
Fast oscillation at high throttle: Raise TPA breakpoint or reduce P. Check that props are balanced and motors are not bent. The Axisflying Argus ECO stack and similar modern stacks come with solid default tunes that handle most 5-inch setups.
Slow wobble during descent: This is prop wash, caused by the quad flying through its own turbulent air. Increase D on pitch and roll, or raise the D-term lowpass filter ceiling. Anti-gravity mode can also help by boosting I during rapid throttle changes.
Bounceback after flips: Increase D on the affected axis. If that does not fix it, check I-term relax settings. I-term relax limits I accumulation during fast stick movements, preventing the "rubber band" snap-back effect.
Motor overheating: Too much D gain or insufficient filtering. D amplifies gyro noise, which makes ESCs work harder. Reduce D and verify your low-pass filter settings are appropriate for your motor and prop combination.
When to Leave the Defaults Alone
Modern Betaflight presets are based on data from thousands of builds and handle most common configurations well. If you are flying a standard 5-inch freestyle or racing quad with mainstream components, the defaults will fly well. Focus on building a clean, well-wired machine first. Check out our guide to AIO vs stack flight controllers for hardware advice, and our Betaflight setup guide for the initial configuration. Browse our full range of flight controllers and electronics to find the right board for your next build.
FAQ
Q: Do I need to tune PID for every new build?
A: No. Betaflight 4.5+ presets handle most common setups well. Only tune if you notice specific handling problems during test flights. If the quad flies smoothly in hover, through punch-outs, and through prop-wash descents, the defaults are good enough.
Q: What is the difference between PID tuning and rate tuning?
A: PID tuning affects how the drone corrects errors and stabilises. Rate tuning (RC Rate, Super Rate, Expo) changes how stick inputs translate to rotation speed. They are independent settings. See our Betaflight rates guide for rate configuration.
Q: Should I use Blackbox for PID tuning?
A: Yes. Blackbox logging lets you see exactly what your PID controller is doing, making it far easier to identify oscillations, filter issues, and FeedForward gaps. It is the most precise way to tune. You can load logs in PIDtoolbox or the Blackbox Explorer to compare gyro trace against setpoint and spot exactly where the tune breaks down.
Q: What are good starting PID values for a 5-inch FPV drone?
A: Betaflight 4.5+ defaults for a 5-inch freestyle build are roughly P 46-50, I 45-50, D 25-27, FF 100 on pitch and roll. Yaw typically runs P 65, I 45, D 0 with FF 100. These are baseline values; the slider multiplier adjusts all of them proportionally. Start with defaults and only deviate if you have a specific problem.
Q: Why do my motors get hot after PID tuning?
A: Almost always excessive D gain or insufficient filtering. D amplifies high-frequency gyro noise, which heats motors. Reduce D, verify RPM filtering is enabled with bidirectional DShot, and check that your gyro and D-term lowpass filters are not set too high. Do a 30-second hover and touch the motors after any D gain increase.