Data Sheet

UCTRONICS Ultimate Starter Leaning Kit for Raspberry Pi #K0064
51 www.uctronics.com
8. Project details
8.1 Project 1: LED blinking
8.1.1 Overview
In this tutorial, we will start the journey of learning Raspberry Pi. In the first lesson, we will
learn how to control an LED.
8.1.2 Requirement
 Raspberry Pi ×1
 220Ω Resistor ×1
 LED ×1
 Breadboard ×1
 Jumper Wires ×2
8.1.3 Principle
In this lesson, we will program the Raspberry Pi to output high(+3.3V) and low level(0V), and
then make an LED which is connected to the Raspberry Pi GPIO flicker with a certain
frequency.
1. What is LED ?
Please refer to Chapter 3.21.2 Red, Green, Yellow, Blue LEDs
2. What is the resistor ?
Please refer to Chapter 3.23 220 , 1K and 10K Ohm Resistors
3. Working principle
The main function of the resistor is to limit current. In the circuit, the character ‘R’
represents resistor, and the unit of resistor is ohm(Ω).
The band resistor is used in this experiment. A band resistor is one whose surface is coated
with some particular color through which the resistance can be identified directly.
There are two methods for connecting an LED with Raspberry Pi GPIO: