Your quad wobbles after flips because the P and D gains aren’t balanced. It drifts in wind because I-term is too low. And it oscillates at full throttle because the master slider is cranked too high. These three knobs — master multiplier, PD balance, and I-term — control 90% of how your quad flies. Here’s exactly how to tune them.
Step-by-Step PID Tuning Workflow
Step 1: Start with Betaflight 4.5 Defaults
Flash Betaflight 4.5 or later and apply the default tune for your prop size. Do not import someone else’s CLI dump — presets are tuned to specific builds and will fight your frame’s resonance profile. Go to the PID Tuning tab and note the default values before touching anything.
Step 2: Set the Master Multiplier
The master slider scales all PID values proportionally. Start at 1.0 and fly a pack. If the quad feels loose — slow to correct, wobbly in propwash — bump it to 1.1. If it oscillates in straight-line flight or sounds “angry” (high-frequency buzzing), drop to 0.9. The goal is the highest value that produces zero oscillations in forward flight with no stick input. Most 5-inch quads land between 0.9 and 1.2.
Step 3: Tune PD Balance
PD Balance shifts emphasis between P (proportional — immediate correction) and D (derivative — damping). The default is 1.0. Raise it above 1.0 (more D) if the quad oscillates on sharp stick inputs or propwash. Lower it below 1.0 (more P) if the quad feels mushy and delayed on flips and rolls. Adjust in 0.1 increments. A tight racing quad might run 0.8; a cinematic cruiser might run 1.3.
Step 4: Dial In I-Term
I-term corrects persistent error — wind drift, off-center CG, bent props. Too low and the quad slowly drifts off-axis. Too high and it induces slow oscillations (I-term windup), especially after long maneuvers. Raise I-term in 5-point increments until the quad holds attitude in wind, then stop. If you see a slow bounce after sharp rolls, back it down 5 points. I-term windup prevention: enable Anti-Gravity in the PID Tuning tab — set the gain to 3.5 for 5-inch builds.
Step 5: Verify with Flight Testing
Fly a known test pattern: punch-outs for P/D balance, split-S for propwash, sustained yaw spins for I-term. Use Blackbox logging at 2 kHz to review each axis independently.
PID Parameter Reference Table
| Parameter | Default (5″) | Effect if Too High | Effect if Too Low | Adjustment Increment |
|---|---|---|---|---|
| Master Multiplier | 1.0 | High-frequency oscillations, hot motors | Mushy feel, slow recovery from flips | 0.1 |
| PD Balance | 1.0 | Overdamped, delayed response | Bounce on sharp inputs, propwash oscillation | 0.1 |
| P (Roll) | 46 | Bounce after roll input, motor grinding sound | Slow roll response, mushy stops | 2-3 |
| D (Roll) | 30 | Motor grinding at idle, delayed response | Bounce/overshoot after roll | 2-3 |
| P (Pitch) | 50 | Pitch bounce, hot rear motors | Nose bobble in forward flight | 2-3 |
| D (Pitch) | 32 | Pitch mushiness at center stick | Pitch bounce after flips | 2-3 |
| I (Roll/Pitch) | 90 | Slow wobble after sustained maneuvers | Drift in wind, won’t hold angle | 5 |
| Anti-Gravity Gain | 3.5 | Overshoot on sharp throttle changes | I-term windup, slow bounce after punch-out | 0.5 |
Common Mistakes & What Most Pilots Get Wrong
Mistake 1: Copying a YouTuber’s CLI dump. Every frame has unique resonance frequencies. A tune that’s butter-smooth on an ImpulseRC Apex will oscillate violently on a Source One because the arm geometry and carbon layup differ. Always start from defaults.
Mistake 2: Cranking the master slider before filtering. If the quad has noise — mechanical vibration from bent props, loose stack screws, or a delaminated arm — raising P and D amplifies that noise into the PID loop. Fix the mechanical issue first, tune filters second, then touch PID values.
Mistake 3: Ignoring I-term entirely. Pilots fixate on P and D because oscillations are obvious. But I-term drift is subtle — the quad slowly rolls right during a 10-second punch-out, or pitches up in wind. That’s I-term being too low. It’s also the most common cause of “my quad flies weird after a split-S.”
Mistake 4: Tuning one axis at a time on the bench. Changing roll P while ignoring pitch coupling will chase your tail. A stiff roll axis transfers energy to pitch. Fly, review all three axes in Blackbox, and adjust the one that’s objectively worst.
Mistake 5: Not factoring in prop and battery changes. A tune optimized for 5140 props and a fresh 6S pack will be sloppy on 5130 props and a sagging battery. Different props change the inertial load the PID loop sees. Re-verify your tune when switching props or if your packs are aging.
⚠️ Regulatory Notice: The flight recommendations in this article should be followed in accordance with the latest 2026 drone regulations in your country or region. Always verify local laws regarding flight altitude, no-fly zones, remote ID requirements, and registration before flying. Regulations vary significantly between the FAA (US), EASA (EU), CAA (UK), CAAC (China), and other authorities.
Related Reading
As we covered in our guide to Betaflight filter tuning and gyro/D-term noise reduction, a clean gyro signal is the foundation of any good PID tune. Once your filters are dialed in, head over to our RPM filtering setup guide to eliminate motor noise before it reaches the PID controller.
Product recommendation: The SpeedyBee F405 V4 flight controller includes a built-in Blackbox flash chip (16 MB) and runs Betaflight 4.5 out of the box — no SD card needed for logging, which means you can actually review your PID data after every session instead of putting it off. Available at uavmodel.com.