1. Flowcharting Workshop
Using the Raspberry Pi
TMF
London
31/07/2013
Facilitated by
Graham Thomas
Phill Isles

2. Abstract
By now many of you will have heard about the Raspberry Pi, the $35 British computer that is helping schoolchildren to learn how to write computer programs. To date over 1 million have been produced. A real success story.
Some of you may also know that over the last 18 months I (Graham) have been actively trying to reconvert the world to using flowcharts.
Well, now Phill and I have brought these two themes together, in the form of a highly interactive flowcharting workshop presented using the Raspberry Pi.
This session should be informative, fun, and productive. Informative in that you will find out how really powerful a $35 computer can be. Fun because we will use the Penguins logic puzzle game on the Raspberry Pi as the basis for the flowcharting exercise. And productive because you will learn or relearn how powerful, quick and easy it is to generate flowcharts to aid in your daily work.
To play an active part in this workshop you will need something to draw flowcharts with, be that notepad and pencil, computer, tablet or phone.

3. Agenda for the Session Introduction to the Raspberry Pi Programming
Robotics
Flowcharts
Mind Map
Summary

4. The Raspberry Pi
The Raspberry Pi is a credit- card sized computer that plugs into your TV and a keyboard.
It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word- processing and games.
It also plays high-definition video.
“We want to see it being used by kids all over the world to learn programming.”

5. The Raspberry Pi Camera
5 MP Camera
2592 x 1944 pixel
HD 1080P Video
1080p30
720p60
640X480p60/90
Programmable control
£20
Time-lapse Video

6. Pi Camera Python Code <10 <100 <1000 “000” “00” “0” “null” x

7. Robotics
Phill is going to show us how the Pi is being used to control simple robotics like this USB controlled Robotic Arm.
And we are going to demonstrate Virtualisation on the Pi.
Physical Virtualisation !

8. Robotic Arm Kit with USB Interface
Pros
Supplied in kit form from the high street shop Maplin
Great introduction to robotics for kids and adults alike
Good value for £29.99
USB interface
Cons:
Only comes with Windows XP / Vista software
No feedback – the arm does not know where any of it’s five motors are
However it is very easy to ‘hack’ and control using Python on the Raspberry Pi
Prerequisites:
Python, PyGame and the Python USB libraries installed on the Pi
Details of the USB vendor and product IDs
Details of the control transfer codes to talk to the robot arm control board

9. Robotic Arm Python Code
No Arm Y
Stop x
Done Y
Stop x
Quit
Set Done
Left
Move left
Right
Move right

10. Living with the Raspberry Pi
Linux (Raspbian - Debian)
LXDE
Command Line
Software Installation
Open Source
Peripherals
Case
Camera
LapDock
Raspbmc Media Centre
Python
Robotics
Automation
Motorola Atrix 4G LapDock
USB
Robotic
Arm
Pibow
Case
Pi Camera
Board
Expansion Boards
Raspbmc Media Centre

11. Why Flowcharts Been around a long time (1920 - 1930)
Coming back into fashion
EU Process flow
Laptop support manual
Easy to do after learning only a few rules
Show basics of logic – ideal for programming
Still work!
Most drawing tools support them
Visio
Powerpoint
LibreOffice
Used for
Decision, logic, system, product, and process flowcharts, etc. etc.

12. Flowcharting Exercise - Requirements
Your Brain
Paper
Pen / Pencil

17. Lets Test our Flowcharts

19. Four
Bones

22. In Conclusion We hope you found this session useful?
We hope that Flowcharts can now be added to your Testers Tool-kit armoury?
We hope you found the capabilities and opportunities offered by the Raspberry Pi informative, interesting, challenging?
We hope it was fun?
Please feel free to talk to Phill or me afterwards about the flowcharts, penguins, or the Raspberry Pi.

23. Thank you for participating
Graham Thomas
Independent Consultant
@GrahamNThomas
Phill Isles
HSBC
HSBC Private Bank (UK) Ltd.