Jerry Xu

A 4x4 systolic array of 8-bit multiply-accumulate units in SystemVerilog, running quantized MNIST inference. Verified with cocotb against a bit-exact Python reference model, hardened to SkyWater 130nm through LibreLane, and benchmarked against tiled CUDA matrix-multiply kernels on a T4 to compare GPU and accelerator latency.

Battery-powered desk display that runs about a month per charge. Selected and wired the ESP32 and e-ink panel, then wrote a custom TRMNL plugin that polls Google Calendar and Tasks and auto-scrolls through the day.

Computer vision rig that finds deflated tennis balls from bounce timing, at 99% accuracy and 100+ balls per minute. Works on bulk containers and directly off a ball machine.

ATP-style match stats from a single rear-fence camera. TrackNet follows the ball and YOLOv8 the players, OpenCV maps pixels to court coordinates, and stroke classification runs at 87% on 1,400 labeled strokes. Results surface through a React and Recharts dashboard.

Full-stack tool that converts golf swing video into biomechanics feedback (X-factor, spine tilt, shoulder and hip turn) using MediaPipe pose extraction and a custom-trained YOLOv8 detector at 88.9% [email protected] on 11.5K labeled instances.