Justin Chae
Mechanical & product design engineer. Robots, actuators, and small hardware, end to end.
Wheeled Bipedal Robot
A 6-actuated-joint wheeled biped built for my Princeton senior thesis, using QDD actuators and BLDC/ODrive FOC control.
Cup Pong Robot
A beer pong robot hitting 4/5 shot accuracy, built around BLDC/ODrive FOC actuation and custom QDD actuators.
Pokodoro Haptic Timer
A pocket Pomodoro timer with a custom PCB, ESP32, and haptic buzz feedback in a 3D-printed / injection-moldable housing.
Ping Pong Ball Launcher
A BLDC-driven ping pong ball launcher controlled from Python via an ODrive S1 controller.
Motorized Kingrinder Mod
A motorization mod for a manual Kingrinder hand coffee grinder.
Thermal Receipt Photo Booth
A photo booth that prints instant thermal-receipt-style photo strips, built on custom hardware and a Python capture/print pipeline.
Modular Valet Tray
A modular valet tray system, from CAD and materials selection through a quoting/configurator tool.