RotorHazard is an open-source multi-node RF timing system designed for FPV drone racing, which also includes race management capabilities. It triggers lap times through the 5.8GHz video signals broadcasted by the drones; each node monitors a specified frequency and sends the time to the server running on a Raspberry Pi. Devices on the same network can access the frontend interface via a web browser.
Functionally, it goes beyond mere timing to cover the management of pilots, heats, classes, rounds, race formats, and results, while providing statistics broken down by event, class, heat/race, and round. It offers detailed support for common racing issues: visual fast calibration, post-race retrospective correction of calibration problems, recovery of missed laps via RSSI history, and improved indoor/outdoor filtering, synchronization, and timing accuracy. The frontend is described as modern, mobile-friendly, and responsive, making it suitable for multi-device viewing and operation at the race scene.
The text explicitly states that RotorHazard is open-source and provides a GitHub page for documentation, issue reporting, and feature requests. The deployment model leans towards local self-hosting: the server runs on a Raspberry Pi, and devices access it within the same LAN. In terms of integrations, it can send real-time lap data to livetime, supports LED and audio cues for events like starts and staging, and offers a JSON API for other systems to read timing data; there is no mention of SDKs, specific programming languages, or frameworks.
The page does not provide commercial pricing, subscriptions, enterprise editions, or payment methods; it can only be assessed as an open-source project available for self-provisioning and deployment. Support channels are primarily GitHub Issues, Facebook groups, and YouTube content, which suits community-driven project collaboration. If you require SLAs, vendor implementation, or guaranteed finished hardware, the text provides no basis for such needs.
Pros include the integration of timing and race management, local operation, an open API, and optimizations for missed laps, calibration, and complex multipath environments. The cons are the requirement to assemble hardware like a Raspberry Pi and timing nodes, making the entry barrier higher than pure SaaS tools; the quality of documentation, hardware bill of materials, maintenance cadence, and commercial support are unclear in the text. It is best suited for FPV racing clubs, event organizers, and tech-savvy users willing to build their own systems.
The page provides no information regarding mainland China networks, mirrors, or payments, so accessibility should be marked as unknown. Since it relies on GitHub for documentation and code, actual usage may be affected by the stability of accessing GitHub; however, once locally deployed, on-site race usage relies primarily on the LAN.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on rotorhazard.com official site.
rotorhazard.com is an Unknown Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach rotorhazard.com directly.