Output Devices

Week Task

individual assignment:add an output device to a microcontroller board you've designed and program it to do something
group assignment:measure the power consumption of an output device

Introduction

An Electronic System or circuit must be able or capable to “do” something and Sensors and Transducers are the perfect components for doing this. Devices which perform an “Input” function are commonly called Sensors because they “sense” a physical change in some characteristic that changes in response to some excitation, for example heat or force and covert that into an electrical signal. Devices which perform an “Output” function are generally called Actuators and are used to control some external device, for example movement or sound.


Different Output Devices

Following are the some input and output devices use in electronics circuit:


Individual Assignment

The task for the week is to add an output device to a microcontroller board we have designed and program it to do something Due to COVID-19, Govt. of India announced the Lockdown from 22 March 2020 to 3 May 2020. The end date is also depends on the position of COVID-19. So this assignment is in between this period. Currentlly i dont have lab acess right now. So i am trying this assignment using TinkerCAD software. The board is also i have design in Eagle software. The machining i will do when i will be Lab.



1. DC Servo Motor with Arduino Board

Any electrical motor can be utilized as servo motor if it is controlled by servomechanism. Likewise, if we control a DC motor by means of servomechanism, it would be referred as DC servo motor. Here i have connected this motor to arduino board for the rotation of shaft in between 1 to 179 degree angular rotation.There are three pin for connection 1. Ground 2. Power 3. Signal. Following image shows the connection.



The programm for the motor rotation with the help of block. Which is as follows



Now start the simulation, the motor is start to rotate.



Here is the video of connection and simulation.



2. 7-Segement Display with Arduino Board

The seven segment display consists of seven LEDs arranged in a rectangular fashion as shown. Each of the seven LEDs is called a segment because when illuminated the segment forms part of a numerical digit (both Decimal and Hex) to be displayed. An additional 8th LED is sometimes used within the same package thus allowing the indication of a decimal point, (DP) when two or more 7-segment displays are connected together to display numbers greater than ten.



Depending upon the decimal digit to be displayed, the particular set of LEDs is forward biased. For instance, to display the numerical digit 0, we will need to light up six of the LED segments corresponding to a, b, c, d, e and f. Thus the various digits from 0 through 9 can be displayed using a 7-segment display as shown.



Here i have make the connection with Arduino board using TinkerCAD.



The programm for to display 1 to 3 digit is write here.

Snow
Snow

Now start the simulation, the display shows 1 to 3 digit.



3. DC Motor and LED as a Output Device with Arduino Board

Basically in my final project, i have to use two dc motor and two LED as a output device for working smart kitchen chimney. Smoke sensor is taken as a input device in that case. So here i am trying to develope this board using TinkerCAD software. When i will be in lab, then i will use microcontroller ATtiny 44 IC for the same input and output device. Lets see the connection made here



Here i am trying to develope the program directly using text.



Now start the simulation, there is a two LED is used, Red LED shows the power supply is "ON" and sensor is detecting the smoke



As the smoke is detected by the sensor, the First DC motor will get start and green LED will blink In this case the smoke intensity is less so only one motor is getting start.



As the smoke intensity is increased, the second motor is getting start. Both motor are now running



Here is the video of connection and simulation.



Board Design using Input and Output Devices for final project

As shwon in above simulation, this all devices I am going to use in my final project. So here i have develope the board in Eagle software. There is two DC motor are using to run a fan in kitchen chimney. The motor is around 5W rating, so i will use relay to controll the motor, because if I will directly connect thic motor on the board, due to high current the microcontroller may get damage, so here I have the motor relay to ON and OFF the motor. Relay is connected with the microcontroller i.e. ATtiny-44.This is actually the proposed board. There will be littel bit changes I may do according to need.







What i learn?

I am learn about
1. Different output devices used in electronics circuit.
2. Programming for output devices with taken the sensor value as a input.
3. Board design for input and output devices.

Download my original file here

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