Quick Answer
PID tuning adjusts how your flight controller responds to stick inputs and disturbances. In Betaflight, start with the default PID values, hover your drone, then adjust P, I, and D gains in small increments until the quad feels locked-in and responsive without oscillation or wobble.
What Are PID Values in FPV Drones?
PID stands for Proportional, Integral, and Derivative. These three values control how your flight controller corrects errors between where you want the drone to be and where it actually is. Every FPV drone uses a PID controller running hundreds of times per second on the flight controller to stabilise flight.
The P (Proportional) gain determines how aggressively the FC corrects an error. Too much P causes fast oscillations. Too little makes the quad feel sloppy and unresponsive.
The I (Integral) gain accumulates error over time and corrects for persistent drift. Low I values cause the drone to slowly rotate or drift in wind. High I values make the quad feel stiff and can cause overshooting when you release the sticks.
The D (Derivative) gain dampens the correction by predicting where the error is heading. It reduces overshoot and smooths out oscillations. Too much D introduces high-frequency buzzing and can overheat motors. Modern FCs like the SpeedyBee F405 V5 stack process D terms fast enough that you rarely need extreme values.
How to Start Tuning in Betaflight
Before touching any sliders, make sure your drone is mechanically sound. Balanced props, a secure battery strap, and a well-built frame matter more than perfect PID numbers. The Axisflying Argus ECO Stack and similar modern flight stacks come with solid default tunes that work for most builds.
Betaflight 4.x ships with excellent presets that are already well-tuned for common frame sizes. If you do need to adjust, follow this process:
- Hover test: Arm the drone, hover at eye level, and feel for any wobble or oscillation.
- Adjust P first: If the quad oscillates rapidly, reduce P on the affected axis by 5-10 points. If it feels loose or wanders, increase P slightly.
- Adjust D next: If the drone overshoots after flips or rolls, increase D. If motors run hot or you hear a high-pitched whine at low throttle, reduce D.
- Adjust I last: If the drone drifts in a consistent direction during forward flight or in wind, increase I. If it feels sticky and slow to respond to stick release, decrease I.
Make one adjustment at a time and test between each change. Never adjust more than one axis or gain at once, or you will not know what helped.
Filter Tuning: The Hidden Half of PID
Betaflight applies dynamic notch and low-pass filters to clean up motor noise before the PID controller processes the signal. Over-filtering makes the drone feel sluggish. Under-filtering lets noise cause oscillations that look like bad PID values. In Betaflight 4.x, the default filter settings work well for most builds.
Common PID Problems and Fixes
Fast oscillation at high throttle: Reduce P or increase D. Check that props are balanced and motors are not bent.
Slow wobble during descent: This is usually an I-term windup issue. Lower I gain slightly or enable anti-gravity mode in Betaflight, which temporarily boosts I during rapid throttle changes.
Props-out jump on roll flips: Increase D on the roll axis. This dampens the snap-back effect after aggressive manoeuvres.
Motor overheating after flight: Too much D gain. The D term amplifies noise, which makes ESCs work harder. Reduce D and check that your low-pass filters are set correctly.
When to Leave the Defaults Alone
Modern Betaflight presets are based on data from thousands of builds. If you are flying a standard 5-inch freestyle or racing quad with common components, the defaults will likely 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: Not necessarily. Betaflight presets handle most common setups well. Only tune if you notice specific handling problems during test flights.
Q: What is the difference between PID tuning and rate tuning?
A: PID tuning affects how the drone corrects errors and stabilises. Rate tuning (also called RC Rate, Super Rate, and Expo) changes how stick inputs translate to rotation speed. They are independent settings.
Q: Should I use Blackbox for PID tuning?
A: Blackbox logging lets you see exactly what your PID controller is doing, making it much easier to identify oscillations and filter issues. It is the most precise way to tune but requires more effort than feel-based tuning.