Data Sheet

Guide V1.0
Email: [e-mail] Web: www.elecrow.com ---Designed by Elecrow Keen
20
delay()
Application effect
You'll see all the LEDs will turn on/off regularly.
Lesson 3: Traffic light
Overview
The experiment shows the effect of the simulation of traffic lights.
Specification
Pin definition
LED UNO R3
Long pin -> +5V
Short pin -> GND
Hardware required
Material diagram
Material name
Number
220/330Ω resistor
3