This document discusses a switching system that uses iButtons. It aims to investigate transportation access systems and provide insights about motor drives. The document outlines expectations around engineering investigations and software/circuit development. It describes iButton components like the stainless steel casing and one-wire communication protocol. Applications discussed include access control, cash transactions, and asset tracking due to iButtons' durability and communication capabilities. The document expresses gratitude to those involved in the project.

1. SWITCHING SYSTEM WITH IBUTTON
 MUHAMMET BERDİCİ
 YUSUF KÖSESOY
 SEFA ŞİMŞEK
 ZAFER YILMAZ
SUBMITTED TO:ASST.PROF.VEDAT MEHMET KARSLI

2. MAIN PURPOSE
 The fundamental goal here
to investigate the
transportation access
system.
 There are many similarities
between a typical dc motor
drive and ibutton switching
system so it gives us
opinions about motor
drives.

3. EXPECTATIONS
 To observe engineering investigations and the aspect
of production.
 Developing software
 Optimizing circuit or circuit design development
 Develop a pc human interface with visual c language.

4. WHAT IS AN IBUTTON
 The iButton is a
computer chip
enclosed in a 16mm
thick stainless steel
can.
 Because of this unique
and durable container,
up-to-date
information can travel
with a person or object
anywhere they go.

5. IBUTTON COMPONENTS
 An iButton uses its stainless
steel 'can' as an electronic
communications interface.
 Each can has a data contact,
called the 'lid', and a ground
contact, called the 'base'. Each
of these contacts is connected
to the silicon chip inside.

6.  The lid is the top of the can;
 The base forms the sides and
the bottom of the can and
includes a flange to simplify
attaching the button to just
about anything.
 The two contacts are
separated by a polypropylene
grommet.

7. 1-WIRE COMMUNICATION
 By simply touching the iButton to the two contacts
you can communicate with it through one-Wire
protocol.
 1-wire is the protocol can provide device
communications with low speed data,signal or power.
 A network with an associated master is called
microlan.
 One distinctive feature of the bus is the possibility to
use only two wires: data and ground.

8.  To accomplish this, 1-wire devices include an 800 pf
capacitor to store charge, and power the device during
periods when the data line is active.
 Systems of sensors and actuators can be built by wiring
together 1-Wire components. Each component
contains all of the logic needed to operate on the 1-
Wire bus.
 Each 1-Wire chip has a unique ID code. This feature
makes the chips, especially in an iButton package,
suitable for use as a key to open a lock, arm and
deactivate burglar alarms, authenticate computer
system users, operate time clock systems.

9. GETTING INFORMATION
 It is so simply provide
information flow that just
enough to make the lid
touched to data wire and
ground part to the ground
cable of your circuit.
 Every i buttons have self id
numbers and it is possible
to provide communication
just with serial numbers.

10. DURABILITY
 The silicon chip within
the iButton is
protected by the
ultimate durable
material: stainless
steel. You can drop
an iButton, step on it,
or scratch it.
The iButton is wear-
tested for 10-year
durability

11. APPLICATIONS WITH IBUTTON
 The iButton is ideal for any application where
information needs to travel with a person or object.
Affixed to a key fob, watch, or ring, aniButton can
grant its owner access to a building, a PC, a piece of
equipment, or a vehicle.
 Some iButton versions can be used to store electronic
cash for small transactions, such as transit systems,
parking meters, and vending machines. The iButton
can also be used as an electronic asset tag to store
information needed to keep track of valuable capital
equipment

12. ADVANTAGES OF IBUTTON
 As for durability, the thin plastic of smart cards is no
match for the strength of the stainless-steel-
clad iButton.
 Cost of i button is reasonably lower than other
systems.
 In addition, the communication rate and product
breadth of iButtons goes well beyond the simple
memory products typically available with RFID

13. GRADITUDE
 Thanks to MUSTAFA KIRLANGIÇ for all of the helps
while obtaining equipments.
 Thanks to bluemavi.com for providing i button to us.
 And thanks to mr.VEDAT KARSLI for making real this
project in our minds

14. THANKS FOR YOUR PATIENCE!