HOW CONTROL LIGHT VIA INTERNET USING RASPBERRY PI
There was no denying that the
development of the Internet in the present very rapid. Even was also very vital
role. Almost all of society, starting from the top, middle, until the
bawahpun've been able to use the internet. You could say the Indonesian
community dependence on the Internet is very high. Especially the use of a wide
range of social media such as Facebook, Twitter, Instagram, Line, WhatsApp
, and much more. Of course, to use all social media was in need of an internet
connection. Besides being used for social media, other internet usage is as a
medium for surfing the internet, browsing, streaming, uploading, downloading
etc. In other words, in the current era is arguably the era "Internet
Of Things "or better known by the acronym (IOT). One use of the IOT
technology is a system of media control and monitoring of a wide range of electronic
devices. Based on the types of electronic devices and their use is divided into
two, namely sensors and actuators. Sensors provide feedback to the control
system in the form of data, both digital and analog data. While the actuator
requires data / commands in order to make himself working / running. Data /
commands that are needed can be analog data or digital data.
In this application will be made
technology Internet Of Things simple, home lighting control via a web
server and can be accessed via the internet. There are 4 lights AC to be
used as a prototype of ambient light that is in a house. Fourth lights
will be controlled via the website . In this application using the
Raspberry Pi 3 as the main controller.
Figure 1. Illustration Simple Ways
Systems Work
EQUIPMENT
AND MATERIALS
- 1x DW Raspi Development Kit (Raspberry Pi 3 dan DT I/O Quad Relay)
- 4x Fitting Lampu
- 4x Light Bulbs
- 1x Plug AC (AC plug)
- 6x Konektor Male to Male
- enough cable
I.
DW Raspi Development Kit
Dw Raspi Dev Kit is a package of learning and development of Raspberry Pi,
which is composed of several modules. Here are the modules and sensors on the
Dev Kit Raspi DW:
- Raspberry Pi 3
- Adaptor 5 Volt 2,5 Ampere
- Micro SDHC class 10 16 GB
- EMS Logger Pi Shield
- DT I/O Quad Relay Board
- DHT11 sensors (temperature and humidity sensors)
In this application module that will
be used is the Raspberry Pi 3, 5-volt adapter, MicroSD, and DT I / O Quad Relay
Board. Here is a picture of DW Raspi Development Kit.
Figure 2. DW Raspi Development Kit
II.
Fitting Lampu AC
Fitting the lamp AC is one of the electrical accessories are
already familiar. Fitting is used as a medium or point of liaison
between the light bulb and the AC Plug (plug) which is connected to the
grid voltage of 220 VAC. There are a wide variety of modes of fitting
the lamp AC. Figure 3 shows some of the types of variations of fitting
the lamp.
Figure 3. Variation Form Of Fitting
Lamp AC
III.
Light bulbs
The light bulb is also one of the
electrical component that is not foreign to us. Of course, when talking about
the light bulb must remember one hero who can be said to have illuminate this
world of darkness?. O Who he? ... That's right, She is Thomas Alva Edison. It
was he the first in the world to create the incandescent light bulb. For his
services to the amazing technology that is now already enjoyed by all citizens
of the world without exception. Light bulb technology development to date has
been very sophisticated. If in ancient times the size of the lamp is relatively
large and require greater power. Now the size is relatively smaller bulb with
small power consumption as well, and also can produce the light intensity is
big enough.
Figure 4. Type and Model Bulb Lamp
Block
Diagram Applications Lighting control Home Through Internet
Figure 5. Block Diagram Applications
Lighting control Home Through Internet
Based on the block diagram in Figure
5 above, may explain the workings of the application to control the lights over
the Internet. Starting from a light bulb, which must be known is how to keep
the light bulb can be lit and turned out the light bulb will turn on when the
AC voltage gain 220. In general, an electric voltage 2 phase has two lines that
should be connected. To turn off and turn on the light bulb, simply disconnect
and connect one of two paths. Because it requires AC power, use the module relay
to connect and disconnect the pathway. Then the trigger to activate the
relaytaken from Raspberry Pi GPIO. Thus we are able to control the flame
bulb through the Raspberry Pi and set the pin which will be used as an output.
To set the pin mapping which will be used as inputs and which will be used
as output , used programming languages. In this application, the programming
language used is the language " python ". Why use the language python
? One of the reason is to use the language python we can access and control the
features of the raspberry pi. Which further facilitates more were contained
librarieswhich is already available on the forums about the programming
language Raspberry Pi using python . Then the other reason is to use
programming python can be connected to the Internet (it can be connected to the
page website as you wish). Figure 5 below is a schematic wiring diagram of the
system being designed.
Figure 6. Schematic Diagram Wiring
Systems
Preparing
Raspberry Pi 3
After completing the wiring
of all modules and components required in the system. Next is preparing the
installation of Raspberry Pi 3. Of course, we must prepare a microSD that
already contains the Operating System Raspbian Jessie . Application
programs to be installed is the python programming . Here are the steps
for Men- download and install python on Raspberry Pi. Make sure
the wifi was able to connect to the Internet.
sudo
apt-get update
sudo
apt-get upgrade
The above command is a command used
to perform updates and upgrades to the features of OS Raspbian.
This process typically takes a few minutes depending on the Internet connection
used. The faster the internet connection, it will be the sooner the process of updating
and upgrading . The next step is to download and install
python .
sudo
apt-get install python
Wait a few minutes until the process
of downloading and installing complete. We can see the result of
the installation of the application menu on the raspberries. Figure 7 is a view
of application programming menu for IDLE python .
Gambar 7. Programming Python
Meanwhile, to be able to control the
hardware / GPIO on raspberry pi, we need a library that is
RPI.GPIO. Library contains commands that will be used to set the GPIO of
Raspberry Pi. Whether there will be in settting as inputs or outputs in
accordance with our wishes. The command used to add libraries rpi.gpio
is as follows.
sudo
apt-get install python-rpi.gpio
If the steps above have been running
smoothly and successfully to stage the addition of library rpi.gpio, the
Raspberry Pi is ready for use.
Preparing
Website.
The procedure for the making of a
website certainly is not foreign to the comrades who studied computer
science and informatics. In general, if you want to create a website
with nice amenities and also bandwidth is great to be charged. But do
not worry, many providers layananan of making a website that is free.
Surely facilities, capacity and bandwidth provided is also not as much and for websites
that pay. However, it was enough for the novice to learn to be creative with
making websites . At this time applications, we use the websitethat
is free provided by one of the service providers of website creation services /
hosting that is idhostinger. For how pendaftaranya can follow the steps on the
following link: https://www.hostinger.co.id/forum/register . If
you have finished registering and making new hosting, then the next step is to
perform on the hosting arrangement to create the look of the website .
This can be done by going to the menu bar Hosting - select a hosting account -
click on the option to manage. As shown in Figure 8 below.
Figure 8. Set Hosting Account
After the click selection of
governance will emerge a new look, as shown in Figure 9. Typing " file
" in the search field and select and click on " file manager
".
Figure 9. File Manager Hosting
Account
Wait a while and you will see
several folders. Select and click on the folder "public_html" and
delete the file php that are in the folder
"public_html". See Figure 10 to Figure 13 below.
Figure 10. Sign public_html folder
Figure 11. Delete File PHP
If the removal process file
PHP is successful, then the next step is to upload all the files that
are in the folder " website ". Folders can be downloaded
at the following link: https://drive.google.com/open?id=0BzkNNhuEnaF-MFBna29oNENlcjg
Upload all files contained in the folder " forum
" to " file manager " in the hosting account on the
folder " public_html " as shown in Figure 12 below.
Figure 12. Upload All Files In
Folder Website
The process of preparation of the
website has been completed. If the comrades to follow step by step to the
right, then to see his website address would look something like Figure 13
below.
Figure 13. Display Website For
Controlling Lighting Home
Running
Python Programs
Copy the file with the python
language program IOTraspi.py name. File this program can be obtained together
from folder "site" that has been downloaded previously. Put / paste
the files on your Raspberry, place it in the directory -> / home / pi. Then
open the program file through the terminal Raspberry.
sudo
nano IOTraspi.py
Change website address matches the
address that will be used for controlling. The trick is as follows.
url
= ‘alamat_website/IOTraspi.txt'
As an example we use the website
address is http://iotraspberry.pe.hu then how penulisanya is
url
= 'http://iotraspberry.pe.hu/IOTraspi.txt'
Once finished, save your file
IOTraspi.py python program and exit from the editing process. Run the python
program with the following command.
Sudo
python IOTraspi.py
Make sure there are no errors during
program run python. When the program has been running without error, then is
open the previous web page and start your home light control through the
website. Easy is not it?
Congratulations to innovate.
