Arduino Output Devices

Motors, LEDs, SD Cards, Relays and More

I think of this classification as just about anything you control to provide and output to the world.   Displays are included,  but I give them their own classification HERE.

I’ve played with each of the devices you see listed and each of the articles contains enough information to get you started.

Small DC Motor

Making Small Toy DC Motor Work with an Arduino


Making things move with an Arduino is part of the fun.

This tutorial lets you power your first motor.

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Small DC Motor PWM

Controlling DC Motor Speed with an Arduino


One you make a small DC motor spin, the trick is to control the speed. Back in the day, this was often accomplished by changing the voltage, where a higher voltage meant a faster speed.

On an Arduino, you will use Pulse Width Modulation to control the speed

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Arduin LC Studio SD Card Tutorial

LC Studio SD Card Arduino Tutorial


This little number worked great for me the first time.

I’ve included not only hook ups, but an introduction to reading and writing to an SD card.

Has sample sketches, hook ups and pin outs.

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LED Pin Outs

5mm LED Arduino Tutorial


This Tutorial picks up where ‘blink’ leaves off.

Its intended to provide the knowledge you need to make successful use on an LED in your next project.

It includes a project schematic, and two sketches.

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Four Channel Relay Module

5 Volt 4 Channel Relay Arduino Relay Module Manual and Tutorial


The Four Channel Relay Module (found all over the place), makes short work of controlling devices that operate at higher currents and different voltages.

With these, you can control devices like motors and lights.

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MCP41010 Digital Pot

MCP41010 Digital Potentiometer User Manual and Tutorial


Digital Potentiometers are just one way to programmatically control a voltage output from your Arduino.

This article focuses on the MCP41010.

You will find a functional description and a tutorial.

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KY-008 Laser Module

KY-008 Arduino Laser User Manual and Tutorial


This device is ideally fit for an Arduino.

Its low power consumption means that you can power it directly from an Arduino digital IO pin. What that means is you will only need two wires to make it work.
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Automotive Relay

Arduino 12V Automotive Relay Tutorial with a TIP122


Automotive Relays are cheap and very reliable.

This article is worth a read even if you don’t plan on building anything for your car.

Its a great way to move a lot of current with your Arduino.

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10W LED

Using a 10W LED with an Arduino



The High Power 10W LEDs are cool devices that are begging to be controlled by an Arduino

This article will show you how to do just that.

Includes sample sketches and schematics

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Arduino LM317 LED Current Regulator Tutorial

Using an LM317 To Control LEDs with your Arduino


LEDs are often best controlled with current.

An LM317 and a TIP122 will help you to do just that.

It will show you how to drive LEDs in series using the same Arduino output.

Has schematics and a sample sketch.

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Arduino MCP4725 Tutorial

MCP4725 DAC Arduino Tutorial


The device allows you to program a voltage output using your Arduino.

It does so in increments of 1.2 volts when it has a 5.0 supply

It communicates via I2C.

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