PI-Link Speed Radar

One of the standout capabilities is smartphone-assisted noise filtering. The phone's processor analyzes the raw speed candidates from the radar, discarding reflections from background movement or interference to output a single, reliable reading. This software-based filtering means the hardware can be simpler and more affordable. The app also supports multi-player profiles, allowing coaches to switch between athletes and keep their data, units, and training context separate. Calendar analytics show training volume and performance changes across days, while a recording library lets users browse, favorite, and share clips organized by session date.

The workflow from signal to result is designed for reliability and speed. First, the PI-Link module emits a 24 GHz K-band Doppler signal and detects moving objects within its field. Second, the onboard signal processing generates a set of speed candidates from the Doppler shift. Third, the smartphone's application layer filters these candidates using advanced algorithms to distinguish the ball from noise. Finally, the app displays a clean speed reading in real time, and if recording is active, it pairs that reading with a video clip. This hybrid approach uses the phone’s compute power to achieve accurate readings without the expensive dedicated processing chips found in traditional radar guns.

In a bullpen session, a pitcher attaches PI-Link to their phone and sets it behind home plate or along the side. As each pitch is thrown, the app immediately displays velocity in mph or kph and automatically saves a video clip with the speed overlay. The coach can later review the session's data and video to identify trends or mechanical adjustments. For arm-care programs, players track velocity day over day from long toss or flat ground throws, flagging any sudden drops that might signal fatigue. Teams benefit from the multi-player profiles: a pitching coach can manage a whole staff's data from a single phone, using the calendar analytics to plan workload and recovery.

PI-Link is built for baseball players at all levels, from high school to professional, as well as coaches, trainers, and sports performance staff. It runs on iOS and Android via a USB-C connection, making it compatible with most modern smartphones. The product is backed by a successful Kickstarter campaign that raised $80,340 from 511 backers, achieving 4,017% of its funding goal. While final pricing is not specified, the module's design—using the phone's power—allows for a lower cost compared to standalone radar guns. In summary, PI-Link reimagines speed measurement by turning the smartphone into a smart radar: affordable, portable, and deeply integrated into the training workflow.