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  • INAV vs Betaflight — When to Use Each

    calendar Jul 13, 2026 · 5 min read · fpv inav betaflight gps autonomous firmware navigation pavo20  ·
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    Betaflight and INAV are both open-source FC firmware. They share some code history but have diverged into distinct tools with different strengths. The wrong choice for a GPS build results in either a frustrating experience or wasted capability. Core Philosophy flowchart LR BF[Betaflight] -->|Optimised for| M1[Manual …


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  • Pavo20 Pro II GPS Fix Attempts: BEC Switching Noise at 1575 MHz and What Actually Helped

    calendar Jul 9, 2026 · 10 min read · fpv gps pavo20 noise rf tinysa betaflight emi bec switching-regulator gps-l1 electromagnetic-interference whoop  ·
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    Pavo20 Pro II GPS Fix Attempts: BEC Switching Noise at 1575 MHz and What Actually Helped

    The Pavo20 Pro II is a capable 2.5" whoop — compact, powerful, with a good camera and a surprisingly solid video link even on linear whip antennas. I wanted it as a mountain trip quad: something that fits in a jacket pocket, dives canyons, and has GPS Rescue as a genuine safety net. GPS is not included; I added a …


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Open-source hardware builds, embedded firmware, and DIY science instruments
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Recent Posts

  • It Was Never a Prism: My Spectrometer Has a Diffraction Grating
  • The Betaflight VTX Trap: aux_channel Is 0-Based, vtx_power Is 1-Based
  • Pavo20 Pro II GPS Fix Attempts: BEC Switching Noise at 1575 MHz and What Actually Helped
  • FPV Tuning with Sintra AI — And Why I'm Not Building Another AI Platform
  • Training a Neural Network to Detect Shaheds and Quads from Audio
  • FPV: how it all began
  • Building a Portable Visible Light Spectrometer with Raspberry Pi and Fiber Optics
  • Adventures in Color Science: Building a DIY Calorimetric Laser Power Meter

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HARDWARE 7 COLOR SCIENCE 5 FPV 4 TECHNOLOGY 4 IOT 3 ACOUSTICS 2 HOWTO 2 ROBOTS 2 SPECTROSCOPY 2 TOOLS 2 AI 1 BETAFLIGHT 1 DIY 1
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COLOR SCIENCE 5 FPV BUILDS 3 AI TOOLS IN PRACTICE 1

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ENUMERATION1 ENVIRONMENT1 EQUATIONS1 ERD1 ERPM1 ERROR-HANDLING1 ESC6 ESP321 ESP82666 ETHEREUM4 EVENT-DRIVEN1 EXAMPLES1 EXPECTATION1 EXPERIMENTAL-DESIGN1 EXPO2 EXPRESSLRS2 EXTRACTION1 FAILSAFE2 FASTAPI1 FCC1 FEDORA1 FEEDFORWARD2 FEYNMAN1 FFMPEG4 FFT2 FIBER OPTICS1 FILTER2 FILTERING2 FILTERS11 FINITE-DIFFERENCES1 FIR2 FIRMWARE1 FLASK1 FLEET1 FLIGHT-PROTOCOL1 FLOW1 FLOWCHART1 FORMAL-VERIFICATION1 FORWARD-KINEMATICS1 FOUR-WHEEL-DRIVE1 FOURIER2 FPV43 FREEBSD1 FREESTYLE2 FREQUENCY1 FREQUENCY-ANALYSIS1 FRONT-WHEEL-DRIVE1 FRONTEND4 FRONTEND-KNOWHOW2 FUNCTIONAL-PROGRAMMING5 FUNDAMENTALS2 FUZZING1 GAME-DEV1 GAMMA1 GANTT1 GAUSSIAN1 GCR1 GENTOO1 GIT3 GITHUB-PAGES1 GLOSSARY1 GMAIL1 GO12 GO-KNOWHOW4 GOHUGO1 GOLANG13 GOOGLE2 GOVERNANCE1 GPG2 GPIO2 GPS5 GPS-L11 GPS-RESCUE1 GPT1 GPU1 GRADIENT-DESCENT1 GRANDPA1 GRAPH3 GRAPH-DB1 GRAPH-RAG1 GRAPHICS1 GRAPHVIZ1 GRPC5 HARD19 HARDWARE1 HARDWARE REPAIR1 HARDWARE-KNOWHOW6 HASH-MAP1 HASHING2 HASKELL5 HASKELL-KNOWHOW1 HDZERO1 HEAP2 HEAP-SORT1 HEIGHTMAP1 HIERARCHY1 HISTORY2 HLS1 HOBBY1 HOMOMORPHIC-ENCRYPTION1 HORIZON1 HSL1 HSV1 HTTP1 HUFFMAN1 HYPOTHESIS-TESTING5 I-TERM1 I2C2 I2S2 IFTOP1 IGNITE1 IIR2 ILLUMINANT1 IMAGE-PROCESSING2 IMAGEMAGICK2 IMAGES2 IMU3 INAV1 INFERENCE3 INFORMATION-THEORY6 INTEGRATION1 INTERACTION1 INTERACTIVE1 INTEROPERABILITY1 INTERPOLATION2 INTERVIEW75 INVERSE-KINEMATICS1 INVERTED-PENDULUM1 IOS1 IOT4 IPERF1 IR LASER1 ITERM1 JACOBIAN1 JAVASCRIPT9 JUPYTER1 JUPYTER-KNOWHOW1 JVM1 JWT4 KALMAN3 KANBAN1 KATEX1 KDF1 KERAS2 KEY-MANAGEMENT1 KEYS1 KINEMATICS9 KISS-RATES1 KL-DIVERGENCE1 KNOWLEDGE-GRAPH1 KURTOSIS1 KV2 LAB1 LANGCHAIN4 LAPLACE1 LAPTOP1 LASER POWER METER1 LATENCY2 LATEX1 LBT1 LCS1 LEETCODE4 LFU1 LIBFUZZER1 LINE1 LINEAR-ALGEBRA1 LINEAR-SYSTEMS1 LINK1 LINK-LOSS1 LINK-QUALITY1 LINKED-LIST2 LINUX7 LIPO1 LISP4 LLM8 LOD1 LOGGING1 LONG-RANGE1 LORA1 LQ1 LRU1 LSPCI1 LSUSB1 LTI-SYSTEMS1 MACHINE-LEARNING8 MADGWICK1 MAHONY1 MARKDOWN1 MATCHING1 MATH2 MATHEMATICS12 MATRIX1 MEAN1 MECANUM-WHEELS1 MEDIAN1 MEDIUM19 MERGE-SORT1 MERMAID22 MESSAGING1 METACLASSES1 METHODOLOGY3 MEV1 MFA1 MICROSERVICES4 MIDDLEWARE1 MINDMAP1 ML2 MOBILE1 MOBILE-ROBOTS5 MODEL-CONVERSION1 MODES1 MODULES2 MOMENTS1 MONADS1 MONGODB1 MONITORING2 MONOREPO1 MONTE-CARLO1 MOTOR3 MOTORS2 MPC1 MULTI-AGENT1 MULTI-STAGE1 MULTISIG2 MUTUAL-INFORMATION1 MYSQL1 N-ARY-TREE1 NAKAMOTO1 NAS1 NATS1 NATS-KNOWHOW1 NAVIGATION1 NEO4J2 NET-KNOWHOW3 NETWORK3 NETWORKING5 NEURAL-NETWORK1 NEWTON-METHOD1 NLP1 NMAP1 NODEJS2 NOISE3 NON-LINEAR1 NORMAL1 NORMAL-DISTRIBUTION1 NOSQL2 NOTATION1 NOTEBOOK1 NPM1 NPOS1 NULL-HYPOTHESIS1 NUMERICAL-METHODS9 NYQUIST1 OAUTH2 OIDC1 OMNIDIRECTIONAL1 ONNX2 OOP2 OPENAPI1 OPENCV1 OPENROUTER1 OPERATORS1 OPTIMIZATION14 ORIENTATION2 OSD2 OUROBOROS1 OV92811 OVERFITTING1 OWASP1 OWNERSHIP1 P-TERM1 P-VALUE1 P5JS1 PACKAGE-MANAGER9 PACKET1 PACKET-CAPTURE1 PACKET-RATE1 PACMAN1 PALLETS1 PANDAS1 PASSWORD-HASHING1 PASSWORDS1 PATH-INTEGRALS1 PATTERN-MATCHING1 PAVO202 PAXOS1 PENETRATION-TESTING1 PERCENTILES1 PERF-KNOWHOW1 PERFORMANCE15 PERLIN-NOISE1 PERMISSIONS1 PERSISTENT-STATS1 PERSONAL1 PGP2 PGVECTOR1 PHYSICS1 PI-CONTROLLER1 PID8 PID CONTROL1 PID-TUNING1 PIDTOOLBOX1 PIE1 PIP2 PIT-MODE1 PKG1 PKG-KNOWHOW12 PLACEMENT1 PLATFORMIO1 PLUTUS2 POH1 POLICY-GRADIENT1 POLKADOT5 PORTAGE1 POS3 POSTGRESQL1 POW1 POWER3 POWER-MANAGEMENT1 POWERSHELL2 PPROF1 PR1 PREFIX-TREE1 PREFLIGHT1 PRESETS2 PRIORITIZATION1 PRIORITY-QUEUE1 PRIVACY1 PROBABILITY9 PROBLEM-SOLVING1 PROC1 PROCEDURAL-GENERATION2 PROFILING2 PROGRAMS1 PROJECT1 PROJECT-MANAGEMENT1 PROJECT-STRUCTURE1 PROJECTS1 PROOF-OF-HISTORY1 PROPS2 PROPWASH1 PROTECTION1 PROTOBUF6 PROTOBUF-KNOWHOW1 PROTOCOL6 PROTOCOL ANALYSIS1 PROTOCOL-BUFFERS3 PROTOCOLS1 PUBLIC-KEY1 PWM3 PYDANTIC1 PYPI1 PYTHON19 PYTHON-KNOWHOW8 PYTHON3.7+1 PYTORCH3 Q-LEARNING1 QUADRANT1 QUADRATURE1 QUADTREE1 QUANTILES1 QUANTIZATION1 QUANTUM6 QUANTUM-COMPUTING1 QUANTUM-GATES1 QUANTUM-MECHANICS5 QUARTILES1 QUATERNIONS2 QUBITS1 QUICK-SORT1 QUICKRATES1 RACKET1 RADAR1 RADIO1 RAG2 RAMAN SPECTROSCOPY1 RANDOM1 RANDOM-FOREST1 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