Someone that built a smart garage stoplight that can help with parking, and the whole thing is powered by an Arduino board that controls a couple of sensors ...

That’s right, these parking sensors are powered by an Arduino board, and the only extra components that were used in the project are a HC SR04 ultrasonic sensor, an active buzzer, and jumper wires.

What gives? The secret is that smart parking is really a kind of Trojan horse for capping the build-out of more parking–and creating disincentives for driving.