Iot and Arduino

1. Jozef Janitor (jjanitor@cisco.com)
IoT Technical Lead, PS-E
March 8, 2017
The 360 view with Arduino and Raspberry Pi
IoT and Digitization

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Agenda
IoT and Digitization Skillset
Prototyping Tools
Connecting the Unconnected
Demos
Wrap up

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Digital Transformation across Countries and Companies
Smart
City
Smart
Hospital
Smart
Highway
Smart
Factory
IoT merges
physical and virtual
worlds, creating smart
environments

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Would you like a cup of coffee or a computer?
• https://www.raspberrypi.org/blog/raspberry-pi-zero/
Cost of computing

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Open Source culture coming to HW
Example projects:
• Arduino
• SparkFun
• LittleBits
• Raspberry Pi
• Beagleboard
• Etc.
Open-source HW

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Technology driven DIY culture
Tinkering with existing devices
Inventing new devices
Maker movement
Img src: http://www.ticketebo.com.au/startup-tasmania/maker-hobart.html

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Cisco Confidential
Sensors &
Actuators
Embedded
Programming
FOG
Network
Cloud
Business Model
The End-to-End IoT prototype

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IoT Multidisciplinary Skillset
A Multidisciplinary Digital Foundation
Electronics
Programming
Networking
Data Analytics
Cybersecurity
Problem solving
Design thinking
Soft skills

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Electronics

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Electronics

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Ohm’s Law
Kirchhoff’s Laws
Electricity Laws
Current
Voltage
Resistivity
V
R
I=
V

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Power (Wat) Equation
P=VI
if V=IR then P=I2R
Electricity Laws
LED: 20mW
Bluetooth LE transmitting: 1mW
WiFi transmitting: 100mW
Raspberry Pi: 1.5W
Arduino Uno: 3mW
If you are putting >200mW through something
small it get’s warm. At 1W it get’s hot.

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Analog sensors
• Light sensor (photo-resistor)
• Temperature sensor (thermo-resistor)
• Humidity, Air Quality, Water, etc.
• Potentiometer
Digital sensors
• Buttons
• Switches
• and anything digital, e.g. digital Temperature sensor
Sensors

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LEDs
DC Motor
Servo Motor
LCD screen
Buzzer
Hydraulic Pump
etc.
Actuators

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Circuits Diagrams/Schematics
http://fritzing.org/

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Interconnects electronic components
No soldering
Great for prototyping
Breadboard
vs.

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Arduino

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Arduino is an open-source
electronics platform based
on easy-to-use hardware
and software. It's intended
for anyone making
interactive projects.
Arduino

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Microcontroller
Arduino
Arduino IDE

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16MHz CPU
2kB of RAM
32kB of ROM
USB/Serial port
GPIO
• 5V
PWM
Analog Input Pins
Needs Firmware
Arduino UNO

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Pulse-width modulation
Arduino PWM

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Extension boards
Each board adds a new feature
e.g. Bluetooth, Ethernet, Wifi, etc.
https://learn.sparkfun.com/tutorials/arduino-shields
Arduino shields

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Automatic gardening systems
3D printers
Robots
Smartwatches
Etc.
http://makezine.com/2015/03/28/20-projects-celebrate-arduino-day/
Cool Arduino based projects

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Demo time
Arduino IDE
Flex sensors
PWM
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+ Cool automation projects
+ Analog input
+ PWM
+ Realtime
- No network connectivity by default
- Limited processing resources
- Programming limited in languages and libraries
Arduino Summary

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Raspberry Pi

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Single Board Computer
Built in:
• WiFi
• Ethernet
• Bluetooth
Raspberry Pi 3

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RPi extensibility

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GPIOs
• Digital only
• 3.3V
CSI
USB
RPi extensibility

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Linux by default
• CLI
Micro SD card
RPi Operating System

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RPi Foundation’s official supported OS
Debian based distribution
Support for higher level programming languages
• Python
• Java
• Node.js
• Etc.
Raspbian

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Over the network access
1. Find the RPi‘s IP address
2. SSH/Web/VNC/etc.
Headless access to RPi

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Demo time
CLI
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Demo time
Web/PL-App
Blockly
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+ Full-blown computer
+ Great network connectivity
+ Linux
+ Multiple programming languages
+ Remote upgrade
- No analog ports
- No PWM
RPi Summary

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Raspberry Pi with Arduino

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Single Board Computer + Microcontroller
Best of both worlds

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RPi:
• Network connectivity
• FOG processing
• Remote upgrades
• Programming
Arduino:
• Analog
• PWM
• Time sensitive protocols
Best of both worlds

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Firmata is special firmware for microcontrollers
It receives commands over a serial interface (USB)
Locally processes requests:
• digital ON/OFF
• readAnalog
• setPWM
• Etc.
Returns data back over the serial interface
Master – Slave approach with Firmata

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Demo time
Bridge Bending
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Cisco Confidential
Sensors &
Actuators
Embedded
Programming
FOG
Network
Cloud
Business Model
Add a cloud service to complete the journey

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Demo time
42
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IoT Multidisciplinary Skillset
A Multidisciplinary Digital Foundation
Electronics
Programming
Networking
Data Analytics
Cybersecurity
Problem solving
Design thinking
Soft skills

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Data Analytics

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49. 49
© 2017 Cisco and/or its affiliates. All rights reserved.
For Cisco Networking Academy Use Only
IoT Multidisciplinary Skillset
A Multidisciplinary Digital Foundation
Electronics
Programming
Networking
Data Analytics
Cybersecurity
Problem solving
Design thinking
Soft skills