AVR based parking system - Simple Arduino Based Automated Parking Lot System - page 3

Figure 1.3: IR sensor
3. At each parking slot, there is a toggle switch installed for each car. When a car enters
into the garage area, toggle switch is depressed (manually), a red LED indicator turns
on, which implies that the car is parked. On the other hand, anytime a car leaves the
parking slot, the corresponding green LED turns on ( Figure 1.4 ).