ABDULLAH

A mecanum-wheeled robot for a capture-the-flag competition: collect flags, cross a barrier through a 600 mm gate, deliver them — the first 45 seconds with no driver. I designed the machine, built the simulation, and trained the flag detector on 5,001 synthetic renders because no footage of the venue exists.

A quadrotor that flies a whole mission alone: read a riddle, hand it to a language model, pick the gate the answer points to, avoid what is in the way, then find one storefront from the air and land on it. Knowing its own altitude turned out to be the hard part.

A Raspberry Pi car I built end to end. It follows a white line to the grid under a convolutional network, waits for the lights, then hands over to a PID loop on ultrasonic range to race a walled circuit. Two control paradigms, one vehicle, swapping mid-run.

A dead 3D printer stripped for its steppers and rebuilt as a plotter that draws your face back at you. The interesting part is between the photo and the pen: the portrait becomes a graph, and Dijkstra orders the strokes so the pen spends its time drawing instead of travelling.