Slide For the course of Pervasive System from the University La Sapienza in Rome. Project on Raspberry Pi and Motion detection alarm

1. HELLOI am Marco Casini
I am here to present
Raspberry Pi 2
You can find me at:
https://it.linkedin.com/in/marcocasini2
1
!

2. OVERVIEW
Let’s start with the first set of slides on the first
credit card that goes over the wallet!

3. WHAT IS
RAPSBERR
Y PI?
• A credit card sized PC
• Plugs into a Tv or Monitor
• Very Cheap ~ 30£ each
• Over 5 milion units sold
• Uses Broadcom BCM2836 4core CPU
• Designed for education

4. A little bit
deeper..
- 1 GB RAM
- 4 USB
- Ethernet
- SD ROM
- HDMI
- GPIO
- CAMERA
- 3.3v VOLTAGE

5. I’m not like
you!

6. Arduino Raspberry Pi
Microcontroller Just a tiny Pc
FLASH ROM Operating system
Special Purpose General Purpose
One job at a time Multitasking
Hardware minimal Normal Hardware

7. Distros and
Operating
Systems
Ubuntu Mate
Osmc

8. Coding
(Education)
Web Multimedia
Web
Server
Cloud
Server
Real
Worlds
Project
(GPIO)
Game Boy
(RetroPi)
FTP Server

9. GPIO - general
purpose input/output
A more accurate vision on this powerfull
port

10. GPIO – Pins
Physical interface between the Pi and
the outside world.
40 pins,
26 are GPIO pins
14 are for power or ground

11. Input
Signals
incoming from
sensors
GPIO –
Input
/Output
Output
Sending
signals to
ouput, led or
whatever.

12. GPIO -
OUTPUT
GPIO as an output, use HIGH or LOW
in computing terms to send values.
HIGH 3.3V
LOW 0V
LED  -GND,+3.3V

13. GPIO –
INPUT
INPUT, listening values
OUTPUT, no standardized, it depends
on the nature of the connected device

14. GPIO &
PYTHON
1)For using python we must install it
using pip, the package manager :
2) We need to install python now
3)For control GPIO we need 2 libraries
distribute e RPi.GPIO:

15. GPIO –
SHELL
SCRIPTING
Shell Script – Native on Linux !
Supported languages: C, C++,
JavaScript, HTML,Python

16. PRACTICAL
EXAMPLE:
MOTION DETECTION ALARM

17. MOTION
DETECTIO
N
ALARM
IN to VCC
OUT to GPIO4
GND to GND.
MOTION DETECTION  HIGH GPIO4

18. MOTION
DETECTIO
N
ALARM

19. 19

20. LET’S SEE HOW IT WORKS!
IF YOU LOOK AT YOUR
SMARTPHONE YOU SHOULD HAVE A
NOTIFICATION ABOUT NEW POST
ON DIAG SLACK’S CHANNEL

21. THANKS!
Any questions?