Traffic Lights

.

components

costs

size

high lights for bridges

buzzer

big enough to be seen

tall

click to edit

a safe button to press

leds

inexpensive but for safety

inputs

sensor to detect cars and people crossing

lights

click to edit

press button for pedstrians

micro controller

sensible locations

enviroments

on a road

where people need to cross

safety

timed correctly to give time to cross