Ultrasonic Radar
A 3D-printed head sweeps 180 degrees and streams sonar to a live polar display.
Traffic Light System
A printed intersection that runs streets, a crossing, a barrier, and street lamps from one controller.
Drone
A four-motor airframe whose controller went from a hand-wired prototype to a signed circuit board.
Stackr
A compact robot with a printed shell, two gear motors, and a driver board made for this body.
Sumo Bot
Number 12, the wedge robot that won the school sumo competition.
Race Tracks
Two courses on long mats, built for the robot race I organized at school.
Robot Arm
A printed servo arm that holds a pen and writes on the page.
Line Follower
A five-sensor bar that bolts to the front of Stackr and follows a black line.
Digger
A Stackr add-on with a parallelogram bucket, servos on an Arduino Nano ESP32, and a phone gamepad.
Light Bar
A bar of five addressable LEDs that mounts across the top of Stackr.
Lidar
A laser time-of-flight sensor in a printed frame on the front of Stackr.