Open the app → · Example report · Русская версия
Blackbox log analyzer online — find what's wrong with your drone
bbdoctor is an online service that analyzes flight controller logs — Betaflight, INAV, EmuFlight, Rotorflight (blackbox), ArduPilot (.bin) and PX4 (.ulg) — and explains, in plain words, what is wrong with a drone and how to fix it.
Upload a log → See an example report
What it finds
- Which motor or propeller vibrates (imbalance, bent prop or bell) — per motor, using RPM telemetry
- Worn or slow motors (lower RPM at the same command)
- Center of gravity offset, tilted motor, frame and stack resonance
- Gyro noise, motor heating risk, filter delay
- PID overshoot (step response), propwash after throttle chops
- Battery sag and internal resistance, crashes, failsafe
The result is an online report with charts and ready-to-use commands for the pilot's firmware. The report is delivered instantly after the analysis (digital service, no shipping).
How it works
- Record a blackbox log (Betaflight, INAV, EmuFlight, Rotorflight) or take the onboard log of an ArduPilot
(
.bin) or PX4 (.ulg) drone. - Upload the file — there is nothing to install. bbdoctor is an online alternative to opening the log in Blackbox Explorer: instead of plain graphs you get a diagnosis in words.
- Read the report, copy the suggested CLI commands or parameters and test-fly.
Guides
- Config check from diff all
- Betaflight Blackbox Setup: Log Rate, Fields, Test Flight
- How to Read a Blackbox Log: Explorer and Alternatives
- Betaflight PID Tuning From Blackbox: Read the Step Response
- Propwash Fix for Betaflight: Find the Real Cause in the Log
- Hot Motors on Betaflight: Noise and Filter Tuning From Logs
- Betaflight RPM Filter and Bidirectional DShot Setup
- Betaflight Dynamic Notch and Frame Resonance Guide
- Drone Vibration: Find the Bad Motor or Prop From Your Log
- INAV Blackbox Analysis: Tune Multirotor PIDs and Filters
- ArduPilot Log Analysis: VIBE, Clipping, Notch and PIDs
- PX4 ULog Analysis: Vibration, Filters and Rate PIDs
- Guías en español
- Guias em português
- Гайди українською
Pricing
The service is free (at most 30 analyses per hour from one address).
Legal
Contact: @bbdoctor_help_bot.