I presented the world's trend "IoT" in microprocessor class, Islamic Azad University, Central Tehran Branch

1. Internet of Things
Muhammadreza Haghiri

2. Outline
● History of IoT
● IPv4 vs. IPv6
● Applications
● Arduino & IoT
● NodeMCU – ESP8266
● Q & A

3. History of IoT
● 1982 : In Carnegie Mellon University, a
project started to connect Coca Cola
truck to internet. They used it to
realize how many Coca Cola boxes are
in the truck.
● 1999 : Kevin Ashton, named this
“Internet of Things”. In short, “IoT”.

4. History of IoT
● 2014 : IoToilets project uploaded on
GitHub as a GPL-v2.0 Licensed open
source project.
● Later … IoT became the world’s trend!

5. IPv4 vs. IPv6
● IPv4 had limited quantities of IP’s.
● A lot of IPv4 IP’s wasted on internal
networks (such as 192 & 10 ranges)
and loop back addresses (127 range).
● IPv6 is like a unique ID, everyone can
have one, but it won’t be finished.
● With IPv6, we even can connect all
sands of the planet earth to the
internet!

6. Applications
● Internet of Toilets
● SmartBin
● Candy House “Sesame”
● Smart TV’s!
● And everything around us …

7. Internet of Toilets

8. SmartBin

9. Sesame

10. Smart TV’s

11. Arduino & IoT
● Arduino is a general purpose
“prototype” board, based on AVR.
● Arduino has a bunch of devices for IoT
projects, with Intel partnership.

12. Ethernet Shield

13. Ethernet Shield
● It allows us to connect our Arduino
Uno to the LAN
● We can run a simple HTTP web server
on Arduino.
● It allows us to connect external SD
card to our Arduino.

14. Arduino is not the best choice!
● Limited program memory (32 KB’s)
● Limited processing power
● No wireless connection

15. NodeMCU - ESP8266

16. Why NodeMCU?
● It’s cheap (like Arduino)
● Arduino-compatible
● Analogue and Digital pins (like
Arduino)
● Wireless Connection!
● 4 Megabytes Program memory

17. Basic project (Schematics)

18. Basic Project (Code)

19. Basic project (code)

20. Basic project (code)

21. Let’s do an advanced one!
● For this project, I use a common-
anode seven segment and 74HC595
shift register.
● Thanks to Arduino, we have the most
amazing “shiftOut()” method to
manage shift registers!

22. Shift Register and Seven Segment
(Schematics)

23. Shift Register and Seven Segment
(Code)

24. Shift Register and Seven Segment
(Code)

25. Wanna see more?
● There are a lot of other fun projects
using this board , you can find them
on github, Instructables, etc.

26. Q & A

27. Useful Links
● Github – https://github.com
● Instructables –
https://instructables.com
● Arduino – https://arduino.cc
● NodeMCU – http://nodemcu.com

28. Thanks for Watching :-)