BF Blackbox Analyzer
BF Blackbox Analyzer

Blackbox is not hard. Bad tools are.

Drop in a log. See what actually matters first.

Flyability, battery sag, motor balance, noise bands, step response, and side-by-side comparison without getting buried in charts or desktop-era friction.

Open Analyzer Client-side / instant / deterministic
Open sample log Sample dumps All tools
Readable first contact summary + diagnostics
BF Blackbox Analyzer landing and summary interface

Logs are dense.

Most tools feel academic.

This one shows you where the problem is.

At a glance

A browser-based Betaflight blackbox log analyzer.

Upload a .bbl blackbox log to see a readable flight summary, spectral noise analysis, step response, compare mode, and deterministic diagnostics without desktop software.

Input
.bbl Betaflight blackbox logs
Output
Summary, spectral noise, step response, compare mode
Best for
Tune diagnosis, battery sag, motor balance, resonance
Privacy
100% client-side analysis with no server upload
What you see first

Not a wall of charts. A readable verdict.

The first screen is built to orient you fast: a concise summary, plain-English signals, and the highest-value findings before you start digging.

Flight summary metadata / verdict / quick scan
Flight summary view with metadata and quick findings
Fast orientationBattery, motor health, and signal quality in one surface.
Readable firstThe interface prioritizes what changes your next decision.
Diagnostics issue framing / context
Diagnostics view highlighting battery and motor behavior
What matters first plain-English priorities
Battery sagSee the relationship between demand and voltage drop before guessing at tune issues.
Motor balanceSpot roughness and asymmetry before they hide inside wider graphs.
Noise qualityFocus on contamination that affects trust in the log, not abstract chart clutter.
Evidence, not vibes

Every callout points to something measurable.

The analyzer is not trying to look smart. It is trying to make the flight legible and the next action defensible.

Deterministic findings same log / same verdict
  • 01 Deterministic advisor output
  • 02 Battery sag against throttle demand
  • 03 Motor imbalance and roughness clues
  • 04 Noise that actually affects tune quality
Advisor panel readable evidence stack
Advisor-style diagnostic panel with evidence-based findings
Spectral

See the noise.

Spectral view makes interference visible instead of mysterious. You can see where the build is dirty, where resonance stacks up, and where the log stops being trustworthy.

Spectral view noise bands / resonance / filter pressure
Spectral analysis showing resonance bands and noise
Step response

Read the reaction.

Step response turns tune behavior into something legible: overshoot, delay, damping, and recovery. Fast to scan, useful immediately.

Step response view overshoot / settle / delay
Step response view showing tune overshoot and damping
Why it matters control feel / tune validation

You should not have to reverse-engineer control feel from a mess of traces. This view compresses the response into the parts that matter when deciding whether the tune is sharp, soft, laggy, or unstable.

Compare mode

Compare changes like they matter.

Different tune. Different props. Different battery. Same question. Compare mode puts the delta where you can read it.

Side-by-side analysis same visual language / clearer decision
Compare mode with side-by-side analyzer views
Config delta Readable on purpose
master multiplier1.22 -> 1.28
feedforward smoothness15 -> 22
rpm filter harmonics2 -> 3
batteryBT2 300 -> BT2 450
questionDid the flight actually improve?

No upload theater. No black box in the tool.

The product promise is simple: keep the workflow fast, local, and auditable.

Runs in the browserYour logs stay on your machineNo account, no installSame input, same verdict
Quick answers

Direct answers for search and sharing.

The tool is fast to scan visually, but the page should also answer obvious questions in plain language for humans, search engines, and AI assistants.

What does BF Blackbox Analyzer do?
It reads Betaflight .bbl blackbox logs in the browser and surfaces a flight summary, spectral analysis, step response, compare mode, and deterministic findings.
Can I analyze a Betaflight blackbox log without desktop software?
Yes. Open the analyzer in the browser, load a .bbl file, and the parsing and analysis run client-side on your machine.
What does the analyzer show first?
It starts with a readable summary so you can spot battery sag, signal quality, motor health, and the highest-priority findings before opening deeper charts.
Who is this tool for?
It is built for FPV pilots and tuners who want faster Betaflight blackbox diagnosis, especially tinywhoop pilots comparing tune changes and noisy builds.

Stop treating blackbox like punishment.

Use a tool that helps you diagnose the flight instead of decoding the interface.

Launch Blackbox Analyzer
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