Hardware is the new Software Baby!

PiFace and Gertboard in your face !! ... Or hands, whichever you prefer.

Recap of Previous Meetup

http://greenasathistle.files.wordpress.com/2007/07/noreason.jpg

Vision

• Get people interested in the Raspberry Pi and to have them come together to build solutions, with humour, that benefit society.

Mission

• Get this meetup group to grow to 200 people.

• Have at least 10 meetup sessions.

• Have one article published in the Straits times

about this group.

BY 11TH AUGUST ‘15

Mission : Where we stand

Ultimate Mission

• Get this meetup group to grow to 200 people.

• Have at least 10 meetupsessions.

• Have one article published in the Straits times about this group.

Mission in Progress

• 128 Members now

• 2nd Meetup on-going

• Still need Ideas on how to achieve this !

BY 13th October‘14

http://www.meetup.com/Singapore-Raspberry-Pi-Enthusiasts-

meetup/events/196125882/

NOW FOR THIS MEETUP

http://media-cache-ak0.pinimg.com/236x/87/dd/9e/87dd9ed4e8edeff76f8e5a1218656e16.jpg

Two Contenders

• HEAVYWIGHT

– GERTBOARD

• LIGHTWEIGHT

– PiFace

PiFace

• http://sg.element14.com/piface/piface-digital/i-o-expansion-board-for-raspberry/dp/2218566

Tech Stats• 2 mechanical relays (connected to outputs 1 and 2; can

be disabled via jumpers)

– *Relays can be used to switch voltages up to 20V (Max) or currents up to 5A (Max)

• 4 momentary pushbutton PCB switches (connected to inputs 1-4)

• 8 digital inputs (sink to GND to activate each input pin; pulled-up via software)

• 8 open-collector outputs

• 8 LED indicators (for the 8 digital outputs)

Setting up Scratch for PiFace

• After updating/upgrading OS

• 21 steps to initialize Scratch to detect the PiFace– http://www.piface.org.uk/guides/scratch_with_pifacedigital/Setting_up_Scratch/

Stacking the PiFace

http://www.hobbytronics.co.uk/raspberry-pi/female-header-socket-2x13

PiFace Emulator

http://raspberryalphaomega.org.uk/wp-content/uploads/2013/01/piface-ui.png

Programming

• Python

– http://piface.github.io/pifacedigitalio/

• Java

– https://github.com/Pi4J/pi4j

– http://www.savagehomeautomation.com/projects/raspberry-pi-programming-pi-face-with-java-pi4j.html

Scratch with PiFace

Biggest advantage of PiFaceBoard over Gertboard

http://www.element14.com/community/community/raspberry-pi/raspberry-pi-accessories/piface-digital?ICID=rpiaccsy-featured-products

PiFace Digital 2

GERTBOARD

Gert Van Loohttp://m.eet.com/media/1192878/Gert-van-Loo.jpg

Gertboard Installation

Step 1: Take Gertboard

Step 2: Align Gertboard according to GPIO pins

Step 3: Power on Raspberry Pi

Step 4: Run your script

Gertboard

• 12x buffered I/O

• 3x pushbuttons

• 6x open collector drivers (50V, 0.5A)

• 18V, 2A motor controller

• 28-pin dual in line ATmega328 microcontroller

• 2-channel 8, 10, or 12 bit Digital to Analogue converter

• 2-channel 10 bit Analogue to Digital converter

Two resources for demo

• http://raspi.tv/download/GB_Python.zip

• http://www.element14.com/community/docs/DOC-52909/l/assembled-gertboard-software-jan-2013?ICID=gertboard-techdoc

LED test

Motor Test

Links

• http://www.element14.com/community/docs/DOC-52909/l/assembled-gertboard-software-jan-2013?ICID=gertboard-techdoc

• Download gertboard_sw_20120725.zip

• Test files are created in Python and C

Gertboard Arduino IDE Installation

• https://projects.drogon.net/raspberry-pi/gertboard/arduino-ide-installation-isp/

• sudo apt-get install arduino

Gertboard Arduino IDE Installation

http://www.element14.com/community/community/raspberry-pi/raspberry-pi-accessories/gertduino

Gertduino

•Simpler, petite alternative to the Gertboard.

•Costs less too !!

•Does not need to be connected to Pi for power !!

SCRATCH GPIO CONTROL

Without

any

Extension

Boards ?

http://www.texassharon.com/wp-content/uploads/2012/10/scratching-head1.jpg

Scratch and GPIO

What if you don’t have a PiFace or a GertBoard?

Can you still control your GPIO with scratch ?

YES YOU CAN

Resources

• http://simplesi.net/scratchgpio/scratch-raspberrypi-gpio/

The End

Questions and Queries ?

ANNOUNCING A RASPBERRY PI INITATIVE

PCB for Gert's Passive VGA adapter 666 for Raspberry Pi B+

http://vimeo.com/105666360