3.6 - LEDs and Resistors

Introduction

We will now pivot to electrical engineering, the foundation of computers and the electronics that make them work. Let's begin by exploring a few of the most basic components in electronics, the LED, the resistor, the power supply, and the switch.

3.6 - LEDs and Resistors - lmsa

Below are the class links fro TinkerCAD. Select your class then choose Nickname and enter the last 5 digits of your ID to access your account.

Period 1 - Anaya - https://www.tinkercad.com/joinclass/GFWC8RZBR
Period 2 - Anaya - https://www.tinkercad.com/joinclass/FRL6C6ST9
Period 3 - Clark-
Period 8 - Anaya - https://www.tinkercad.com/joinclass/KTMRVRH9N

Use your nickname. DO NOT USE THE GOOGLE BUTTON BELOW.

Links to video resources are below. Learn/review how to read resistor color codes or cover the fundamental principles of electricity by reviewing the following videos:

Now we will experiment with the simulation to combine what we have learned about arduino with what we have learned about LEDs. Review the following activity and copy the accompanying e-notebook entry template to your engineering notebook.

3.6a - LEDs and Resistors ENET - lmsa

Setup:

In this section you will build a circuit to control 3 different color LEDs; green, yellow and red. Each LED will be connected to a digital output on the Arduino board and a current limiting resistor to ground.

Setup:

In this section you will build a circuit to control 3 different color LEDs; green, yellow and red. Each LED will be connected to a digital output on the Arduino board and a current limiting resistor to ground.

To begin, use TinkerCAD to create the following circuit with 3 LEDs

Note that the resistors are 220Ohm Resistors and the Arduino Pins are:

Pin 9 -> Green

Pin 10 -> Yellow

Pin ~ -> Red

Implement the following code:

3.6i - 3 LED Blink - lmsa.mp4

Part1 3 LED Simulation

Follow along with 3.6i - 3 LED Blink.mp4 as a tutorial for this task.

3.6j - Matching LED Brightness.mp4

Part 2 Brightness Adjustment

Next modify the 3 LEDs to adjust brightness in the simulation. Then use the code to match the brightness in the physical prototype.

3.6a - LEDs and Resistors ENET - lmsa

E124.EE1 - I can identify, use, and test electrical components and can demonstrate an understanding of basic Electrical Theory.