A comprehensive review of SpaceX Starlink’s recent FCC filings including direct-to-cell demonstrations in Guam, E-band gateway link extensions for Gen2 satellites, and emergency Supplemental Coverage from Space (SCS) operations during Typhoon Senlark.
A technical history of DJI video transmission chips: from off-the-shelf Leadcore LC1860 SoC in early OcuSync, through customized P1 (Falcon) and S1 (Sparrow) ASICs, to the latest S2 chip supporting wider channel bandwidths. Covers DJI’s three-phase strategy from chip selection to specification definition, and the architectural differences between each generation.
DJI Video Transmission Chip Evolution: From Leadcore SoC to P1/S1/S2 Custom ASICs Read More »
A technical guide to wireless ad hoc network transmission control: silent mode (controlled node transmit state switching) and TPC (Transmit Power Control) for dynamic link-quality-based power adaptation. Covers architecture, control vs. business signal separation, and engineering applications for reducing RF exposure and optimizing spectrum efficiency.
Silent Mode & TPC: Two Transmission Control Capabilities in Wireless Ad Hoc Networks Read More »
A technical deep dive into IMU error sources (gyroscope bias, scale factor, cross-axis errors, temperature drift) and calibration methods (static multi-position, dynamic turntable, temperature compensation). Covers Allan variance analysis, MEMS vs fiber optic IMU trade-offs, and profiles China’s top-tier IMU manufacturers including CoreTronics and CASIC research institutes.
IMU Error Sources, Calibration Methods & China’s Inertial Navigation Market Landscape Read More »
An open-source project that connects ESP32 microcontrollers to LLMs, creating a minimal embodied AI system with vision, touch, audio, and OLED display. Covers hardware architecture, sensor integration, bridge service design, latency benchmarks across 660 experiments, and practical guidance for makers exploring embodied intelligence on low-cost hardware.
Giving LLMs a Physical Body: ESP32 Minimal Embodiment Experiments (660 Runs) Read More »
A comprehensive guide to drone IMUs (Inertial Measurement Units). Covers 6-axis vs 9-axis configurations, gyroscope/accelerometer/magnetometer working principles, Kalman filtering and complementary filtering for sensor fusion, bias drift compensation, and key applications including stable flight, GPS-denied navigation, gimbal stabilization, and precision industrial operations.
Drone IMU Explained: Attitude Estimation, Error Compensation & Sensor Fusion Read More »
A technical deep dive into the SBUS (S.Bus) digital RC protocol. Covers UART configuration (100000 8E2), 25-byte frame structure, 11-bit channel packing for 16 proportional channels, status flags, signal inversion circuits, and common implementation pitfalls in drone flight control systems.
SBUS Protocol Explained: How 16 RC Channels Fit Into 25 Bytes Read More »
A comprehensive technical guide to the CRSF (Crossfire Serial Protocol) used in drone flight control systems. Covers UART wiring, frame structure, type definitions, RC channel packing, extended frames for Lua parameter interaction, failsafe handling, and practical implementation details for ExpressLRS and TBS Crossfire.
Understanding CRSF: The Protocol Behind Drone RC, Telemetry, and Parameter Interaction Read More »
A field engineer’s guide to IMU selection for industrial drone flight controllers. Learn why noise density, bias stability, temperature drift, range, bandwidth, and shock survival matter more than the specs vendors highlight — with 3 real-world crash case studies and a printable selection checklist.
A reader built an INA228 + REF200 + PT1000 temperature measurement circuit claiming 0.005°C accuracy. We analyze why resolution ≠ accuracy and break down 6 critical error sources in this deep-dive metrology analysis.
Can a $3 PT1000 Sensor Really Achieve 0.005°C Accuracy? A Deep Dive Read More »
