while True:
	motion_Sensor = digitalRead(9)
	if 	motion_Sensor == HIGH:
		print("Making Coffee")
		customWrite(1,1)
		customWrite(2,2)
		delay (6000)
		print("Coffee is Ready")
		customWrite(1,0)
		customWrite(2,0)
		 delay(500)



CHAPTER 1
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The Presence of IoT in Today's World
The IoT is all around us.
The IoT helps individuals to improve quality of life.
The IoT also helps industries to become more efficient.


Six Pillars of the Cisco IoT System are:
Network Connectivity
Fog Computing
Cybersecurity and Physical Security
Data Analytics
Management and Automation
Application Enablement Platform

Sensors
A sensor is a device that can be used to measure a physical property by detecting some type of information from the physical world.
A sensor may be connected to a controller either directly or remotely

Actuators
An actuator is a basic motor that can be used to control a system  Can be hydraulic, electric or pneumatic.
can be responsible for transforming an electrical signal into physical output.

Controllers
Responsible for collecting data from sensors and providing network connectivit

IoT Process Flow
A simple IoT system include sensors connecting, through a wireless or wired connection, to actuators or controllers.

Processes
A process is a series of steps or actions taken toachieve a desired result by the consumer of the process.


Feedback
Feedback is when the output of a process affects the input.
Feedback is often referred to as a feedback loop.
Feedback loops can be positive or negative.

Open-Loop Control Systems
Open-loop control systems do not use feedback.
The plant performs a predetermined action without any verification of the desired results.
open-loop control systems are often used for simple processes.

Closed-Loop Control Systems

A closed-loop control system uses feedback to determine whether the collected output is the desired output.
The result is then fed back into a controller to adjust the plant for the next iteration of output, and the process repeats.

Closed-Loop Controllers
There are many types of closed-loop controllers:
Proportional controllers (P): based on the difference between the measured output and the desired output.
Integral controllers (PI): use historical data to measure how long the system has deviated from the desired output.
Proportional, Integral and Derivative controllers (PID): include data about how quickly the system is approaching the desired output.


There are many types of closed-loop controllers:
Proportional controllers (P): based on the difference between the measured output and the desired output.
Integral controllers (PI): use historical data to measure how long the system has deviated from the desired output.
Proportional, Integral and Derivative controllers (PID): include data about how quickly the system is approaching the desired output.

>>>>>>

CHAPTR 2
Models of Communication
Layered networking models are used to illustrate how a network operates. Benefits include:
Assists in protocol design.
Fosters competition.
Promotes technology or capability independence.
Provides a common language to describe networking functions and capabilities.

tandardization
The challenge for the IoT is to ensure these emerging IoT devices can connect securely and reliably to the Internet and to each other.
Consistent, secure, and commonly recognized technologies and standards is needed.


A simpler approach is based on connection levels. The levels are:
Device-to-Device
Device-to-Cloud
Device-to-Gateway-to-Cloud
Device-to-Gateway-to-Cloud-to-Applicatio

Connections Within Networks
Connections can have different contexts.
Power connections, circuit connections or network connection

Physical Connections
Relate to the media and cable type.
Common media types include copper, fiber optics and wireless


What is Metadata?
Metadata refers to the data about data.
Metadata can be embedded within a digital object or it can be stored separately.
Metadata is not usually seen by a user.
>>>>>>>

3

Electronics
 is the field of study focused on the control of electricity and the physical components

electronics device
small
require low power and low voltage
degital circuit

Basic Circuit
An electrical circuit is a closed conductive path that allows electrons to flow

Direct Current vs. Alternating Current
In DC current, electron flow is only in one direction.
Batteries, power supplies, thermocouples, solar cells, or dynamos generate DC.


In  Alternating AC current, electron flow periodically reverses direction.
Hydroelectric plants generate AC.

Analog Circuits vs. Digital Circuits

Analog Circuits: Circuits in which signals vary continuously with time.

Digital circuits: Circuits in which signals that take one of two discrete values.

>>>>

What is a Program
Code is a set of ordered instructions created to accomplish a specific task.

Why Learn Code?
Programmers are valued in the job market.
Today, programmers may work on firmware, device
    drivers, mobile applications, web interfaces, data
    analysis, and more.

REST APIs use HTTP based calls between applications to access and manipulate information stored on powerful databases


The Raspberry Pi can be accessed locally:
1. Install an operating system image on the micro SD card.
2. Place the card in the micro SD card slot of the RaPi.
3. Connect a USB keyboard.
4. Connect a monitor or TV using the HDMI port.
5. Power the device with a power adapter.


The Impact of IoT on Privacy
Suggestions and design considerations concerning privacy include:
Transparency
Data Collection and Use
Data Access

Challenges for Securing IoT Devices
Some IoT network security impacting factors include:
Increasing Number of Devices
Non-Traditional Location of Devices
Changing Type and Quantity of Gathered Data
Lack of Upgradeability