
LED Sequencer PCB
A circuit that lights up 10 LEDs one after another in a chase pattern, with a knob to speed it up or slow it down. Built with a 555 timer and CD4017 counter, simulated in LTspice, and laid out as a two-layer PCB in Altium.

Robodog
A little robot that follows you around, keeping a steady distance using ultrasonic sensing and PID-controlled motors. Built with an Arduino Uno, C/C++, and wheel assemblies designed in Onshape.