FPV Log Analyzer 0.1.0

First public release.

FPV Log Analyzer reads blackbox logs from Betaflight (3.x – 2026.x), INAV, EmuFlight and Rotorflight and shows charts that help find the cause of a problem: noise, filters, step response, motors. It is not an autotuner.

• Curves per Roll / Pitch / Yaw with measuring cursors; the zoomed range is what every other tab analyses
• Spectrum before and after filters, filter cutoffs and delay, a two-stage trial filter
• Noise maps by throttle and by motor RPM, spectrogram, with filter cutoffs and RPM harmonics overlaid
• Step response, gain and phase, phase margin; split by stick rate or throttle
• Tracking error, per-motor load, saturation and rotation-synchronous vibration
• Overview with automatic findings: motor harmonic or frame resonance, prop wash, low phase margin and more
• Comparison of up to four logs, PNG snapshots, text report and CSV export from the command line
• English and Russian interface

Downloads

• Linux x86_64: fpv-log-analyzer-0.1.0-linux-x86_64.tar.gz (glibc 2.28 or newer: Ubuntu 20.04+, Debian 10+)
• Windows x86_64: fpv-log-analyzer-0.1.0-windows-x86_64.zip

Unpack and run fpv-log-analyzer, then drop a .bbl file onto the window. The Windows build has been started only under Wine so far; please report problems.