A smart city is an urban area that uses different types of electronic data collection sensors to supply information used to manage assets.

When my ultrasound sensor stopped working, I decided to improvise by making an obstacle avoidance bot using IR sensors (cheaper too).

Using a IR proximity sensor and microcontroller to find the local values of 'g' and will plot a real time damping curve.

An empty place indicator or monitor for car parking.

Building cleaner, greener and smarter cities with IOTA.

Guest alert system that keeps those nosy, unwanted guests/people away from your room, so that you can work without worrying.