Elecrow Crowtail, User Manual, Page: 7 / 48

05
The LED is the best choice to help you learn I/O
pins. What you need to do is connecting the LED
module to the Base Shield D ports, then download
the program to the Arduino. Besides the very
basic usage, you can make the LED blink with the
frequency you want, thus the brightness with
PWM. Actually, LED is the most popular used for
human interface. In this kit, we prepared two
colors of the LED, including red and green, so you
can create your own LED circuit!
This momentary button outputs logic HIGH signal
when pressed and logic LOW signal when released.
The logic high and logic low levels of the output can
be detected by the Arduino controller, and then you
can program your Arduino to do what you want after
detecting the two different signals.
For this lesson, we will use button and LED module
to make a button control.
Lesson 1 – LED Control
Lessons
Introduction
Crowduino UNO-SD/Arduino UNO x1
Crowtail – LED(Red) x1
Crowtail – Button x1 Crowtail – Cable x2
USB Cable x1
Required Parts
STEP1: Plug the Crowtail- Base Shield onto the
Arduino or Crowduino Board.
Hardware Connection
STEP2: Connect Crowtail-Button to Crowtail-Base
Shield D4 port and Crowtail-LED to D2 port. The
complete connection is as follows:
Open the P01_LED_Control with Arduino IDE
and upload it.