ScratchGPIO, Raspberry Pi & BerryClipKS2 Starter Guide to
Physical ComputingSense and control the physical world using
computer programs running on the Raspberry Pi. Here you will learn
how easy it is to interact with the outside world, and how this
opens up limitless possibilities for exploration. A wide range of
sensors, motors, robots and USB devices can be
connected.https://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/robot/
Getting
Startedhttps://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/robot/getting_started/
https://www.raspberrypi.org/guides/teachers/
https://www.raspberrypi.org/resources/teach/
Desirable features Interactive Design
Scratch and BerryCliphttp://www.rpischool.org.uk/?p=114
A simple way for primary school aged children to control lights,
a buzzer and use a physical button with their scratch programs.
++BerryClip
Raspberry PiBerryClip plugs directly onto the Raspberry Pis GPIO
header and provides 6 coloured LEDs, 1 Buzzer, 2 Switches and a 13
pin header. It can be controlled using any programming languagethat
can manipulate the GPIO pins and this includes Python and
C.GPIO
ScratchGPIO: How to install on your Raspberry PiA modified
version of Scratch called ScratchGPIO is needed to be able to
connect to the BerryClip.The following are instructions to install
ScratchGPIO7 software on Raspberry Pi
With Raspberry Pi connected to InternetCopy the text below (
left click just before the s of sudo and drag right until all the
text in the line as been selected) then right-click and select
copy. Open up an LX Terminal window and select Edit and the Paste
that into an LX Terminal window and press Enter it to download the
installer.wget http://bit.ly/1wxrqdp-O isgh7.shOnce the installer
has been downloaded then just type (or copy and paste the text
below as before)sudo bash isgh7.shand press Enter(If logged in as a
different user to standard pi, then typesudo bash isgh7.sh
yourusername)This will install all the necessary extra software and
some simple examples.
http://simplesi.net/scratchgpio/scratch-raspberrypi-gpio/
With Raspberry Pi not connected to Internet.
Power down you Pi and put the SD card into another computer and
download this file
http://bit.ly/1wxrqdp
and copy it to your SD card.
Put the card back into your Pi and then open up an LX Terminal
window and type the following
sudo bash /boot/install_scratchgpio7.sh
(If logged in as a different user to standard pi, then typesudo
bash /boot/install_scratchgpio6.shyourusername) This will install
all the necessary extra software and some simple examples.
The installer will create 2 desktop icons ScratchGPIO7 which is
used for beginners using simple circuits and ScratchGPIO 7Plus
which is used with a lot of add-on boards.
Continue onto1st Project
http://simplesi.net/scratchgpio/scratchgpio-1st-project/
ScratchGPIO6 was the previous version if you need a copy of it
then clickhere
http://cymplecy.github.io/scratch_gpio/
Raspberry pi
installationhttps://www.raspberrypi.org/documentation/installation/noobs.md
Use Broadcast to control lightsScratchGPIORun the special
Scratch icon (ScratchGPIO) on your desktop.To test out control from
Scratch, click on File then Open and then click on the My Projects
button and select blink11 and click on OK. Once the project opens,
just click on the OK to enable Remote Sensor Connections. To run
the script just click on the Green Flag.
Your LED should now blink on for 1 second and off for 2
seconds(Play Video below to see)
Turn on all the BerryClip LED lights
The LEDs have a Hardware Reference: Use this reference in
ScratchGPIO: or = LED on or = LED off(All the LEDs are on)(GPIO pin
numbers/ordering do not follow anything that makes sense to most
people so you just have to go with the seemingly random numbering
arrangement)
As you can see in the blink11 script , you can simply use a
broadcast message telling Pins to go on or off (Up to 3.3V and down
to 0V) The valid messages are along with the corresponding pin off
messages.
You can also say And you can replace the wordonwithhighand
replaceoffwith lowif you want to talk in pure logic levels.
Play video:
Using variables instead of broadcasts
For more advanced Scratchers, you can use variables instead (or
as well as broadcast messages)
A broadcast allows a signal to everything with the When I
Receive to be broadcasted, and it allows different objects to do
different things all at the same time.
A custom block is a Shortcut to a command. For example, pressing
Ctrl+X cuts something much like a string of custom commands created
by you using custom blocks.
Custom Block - Allows you to create a new block which you can
use in the sprite in which it is defined
Broadcast - Sends an event so all the corresponding when I
receive scripts will start running
Edit: OK a broadcast can be used to replace a custom block. The
custom block makes things much easier by having parameters. The
custom block also has run without screen refresh which broadcast
cannot do.For example: create a global variable called pin11To make
pin11 go on or off, set it to; 1 = on0= off
Variables to control the GPIOs (General Purpose In and Out)
Hardware ReferenceThe following list shows the mapping between
the components, the header pins and the GPIO references :LED 1 -
Pin 7 - GPIO4 LED 2 - Pin 11 - GPIO17 LED 3 - Pin 15 - GPIO22 LED 4
- Pin 19 - GPIO10 LED 5 - Pin 21 - GPIO9 LED 6 - Pin 23 - GPIO11
Buzzer - Pin 24 - GPIO8 Switch - Pin 26 - GPIO7
Make a variable for each of the LED lights.
For example: To control the first RED LED (LED 1) the Hardware
Reference for LED-1 is Pin 7.
Go to Variables. Click on Make a variable call it pin7Drag the
set pin7 to 0 block to the Sprite Script.Create variables like this
for all the LEDs. Use the Hardware Reference as a guide.
To turn a LED on set it to 1To turn it off set it to 0
Make LED light patternOnce you know how to turn on an off the
LEDs you can easily start to write your own sequences.
This piece of script when I press space will create a looping
light cycle.
Try your own combinations of flashing lightsUse either Broadcast
or Variable method to create your own light patterns, turning on
and off the individual LEDs. Which method is easier?Use wait block
to vary the length of time a light stays on. Use forever block to
loop the pattern.Save your work.
Traffic lights sequence (Simple)
Lights go off in pairs in sequence like traffic lights
Traffic Lights Sequence
When flag is clicked it goes to green. Press Space to start
sequence. Print PCB?
GPIO Example: control LEDs using keyboard
Ways to control LEDs using keyboard input with either broadcast
or a variable.
GPIO Game BerryClip
A simple game that uses Scratch GPIO extensions to play. The 3
LEDs display health/ lives of the catUse buttons or arrows to move
the cat up and down to avoid Rex. Be careful, he gets faster!
LED Health Bars -Raspberry Pi, BerryClip, ScratchGPIO
http://computers.tutsplus.com/tutorials/learn-how-to-use-raspberry-pi-gpio-pins-with-scratch--mac-59941
Random Crazy Lights GPIO
Disco
lightshttp://pdwhomeautomation.blogspot.co.uk/2013/04/raspberry-pi-scratch-gpio-disco-lights.html
Allpins on/offTo set all outputs to on or off use
For a complete list of all commands that ScratchGPIO understands
seehere.
Robot Antenna project Raspberry Pi, Scratch and Breadboard
https://www.raspberrypi.org/learning/getting-started-with-scratch/worksheet/
Robot on Scratch linked with Real robot
Pi, Breadboard, Scratch
Pi, Breadboard, Scratch
SWEET SHOP REACTION GAME
https://www.raspberrypi.org/learning/reaction-game/
http://www.dmict.co.uk/programming-using-a-raspberry-pi-berryclip-and-scratchgpio/
The 3 projects are:1. Creating a scanning LED sequence (Think
KITTs lights from the TV show Knight Rider).2. Creating a Morse
code generator using the Berryclips buzzer.3. Creating a working
die using the 6 LEDs that is triggered by the on-board switch.A
guide for creating these mini-projects can by downloaded from the
link below, the Scratch project files can be downloaded for
modification frommy Scratch pageand demos of the 3 projects are
embeded below.3 Raspberry Pi Berryclip mini-projects
documentation
Simplesi website have the
basicshttp://simplesi.net/scratchgpio/scratchgpio-1st-project/
Im using this website as reference but have changed it slightly
as Im using the BerryClip and not a Breadboard.
1st BerryClip project Control the Traffic Lights Manually
Remote Sensor Connections (RSC
Scratch uses thisRSC feature to talk to external devices over a
network. To enable this in scratch, go the sensor blocks, then
right click on either of the last two blocks to find a menu item
called Enable remote sensor connection. Your scratch program will
remember this setting when you save your scratch file. RSC has two
main types of communication:Broadcast messagesThese are simple
messages that can be sent and received over RSC.
e.g.led1onSensor-updatesThese are special messages that pass a
value associated to a changing sensor input or variable. These
sensor updates are only sent when a variable or sensors value has
changed. The berryclip push button is a simple sensor, when pressed
a value of 1 is sent, on releasing the button a value of 0 is
sent.
You should at this point be using ScratchGPIO on your Raspberry
Pi with the BerryClip attached to it.
Now you must enable ScratchGPIO to talk to the BerryClip;
In Scratch, go to the sensor block, then right click on either
of the last two blocks to find a menu item called Enable remote
sensor connection.
SCRATCH INTERFACE DEVICE (SID
use Scratch on a desktop/laptop PC and get it to remotely
control the GPIO pins via a WiFi connection.
http://simplesi.net/sidrpi/
Berry Bookies A Horse Racing Game For The BerryClip
http://www.raspberrypi-spy.co.uk/2014/01/berry-bookies-a-horse-racing-game-for-the-berryclip/
Raspberry Pi and Berry
Cliphttp://www.rpischool.org.uk/?p=114
BERRYCLIP PLUS INSTRUCTIONSThe BerryClip+ is an enhanced version
of the popular BerryClip add-on board. It is a simple, cheap and
easy to use addition to the Raspberry Pi. It plugs directly onto
the Pis GPIO header and provides 6 coloured LEDs, 1 Buzzer, 2
Switches and a 13 pin header. It can be controlled using any
programming languagethat can manipulate the GPIO pins and this
includes Python and C.The 13 pin header allows additional
components and sensors to be added.The kit includes the following
parts : 1 PCB 1 26-way header 1 13-way header 2 Red LEDs 2 Yellow
LEDs 2 Green LEDs 1 Buzzer 2 Switches 6 330 ohm resistors 2 1K ohm
resistors 2 10K ohm resistors 1 Rubber bumper
Pin Pattern
To use a bit-pattern to set/unset multiple outputs
simultaneously use (this will set Pin 11 , Pin 13, Pin 16 and Pin
18 on and Pins 12 and 15 off)
25 fun things to do with a Raspberry Pi
http://www.cnet.com/uk/how-to/25-fun-things-to-do-with-a-raspberry-pi/https://pihw.wordpress.com/lessons/rgb-led-lessons/rgb-led-lesson-2-scratch-gpio-getting-started/http://www.ncl.ac.uk/computing/outreach/resources/primary/primary-conf-2014/resources/w2.4.pdfhttp://www.adafruit.com/
VGA
Adaptorhttp://www.bloglovin.com/blogs/raspberry-pi-spy-5426543?post=4101956151&group=0&frame_type=a&context=&context_ids=&blog=5426543&frame=1&click=0&user=0&viewer=true
Broadcast v custom block
Custom build an enclosure digital fabrication
https://github.com/diy-electronics/raspberrypi-b-plus-case
How To Create A Raspberry Pi Video Capture Unit Part 1
http://www.raspberrypi-spy.co.uk/2014/11/how-to-create-a-raspberry-pi-video-capture-unit-part-1/
http://uk.rs-online.com/web/b/raspberry-pi/?cm_mmc=UK-PPC-0914-_-google-_-2_UK_EN_LS_Raspberry_Pi_BMM-_-b7b28a6f-48dd-4d1c-91b5-51884f7b1082&gclid=CIbki8_YxsgCFQUewwodaHQHFA
http://www.bitsbox.co.uk/
Where to buy a BerryClipI bought my BerryClip + (the '+' version
is red and has an extra switch button) from DAwn Robotics:
http://www.dawnrobotics.co.uk/brands/Raspberry-Pi-Spy.html
Also recommended outlets are:
https://www.modmypi.com/search/?search=berryclip
and:
https://www.m.nu/berryclip-addon-p-767.html
Berry Clip and more Pi
Shoppinghttp://www.modmypi.com/raspberry-pi
Websites
http://www.raspberrypi-spy.co.uk/
Melting ice cube game
Programming for GCSE
Topic 17: Comparing Scratch and Python
http://scratch.mit.edu/
William Marsh School of Electronic Engineering and Computer
Science Queen Mary University of London
Aims
Compare Scratch and Python Show conceptual links Consider
transition from Scratch to Python
Scratch has recently introduced Scratch 2.0 which is used online
but is not yet (July 2013) available for offline use. These slides
only cover Scratch 1.4
SYLLABUS AND TEACHING ISSUES
Scratch is usable as one language in GCSE
OCR GCSE Programming Language
There are no restrictions on the programming language chosen
providing it has the features indicated within the specification.
It is anticipated that the work for this unit will follow on from
the programming elements in unit A451 and that the same programming
language may, therefore, be appropriate. The tasks are set so that
they can be completed in a wide range of languages including those
frequently used to teach programming techniques including all forms
of BASIC and C. There may be a question which states that the work
must be completed within a specific package, if this is the case,
that package will be available for free and legal download, for
example SCRATCH from MIT and ALICE from Carnegie.
Teaching Issue
Scratch is fun, but how much is learnt? Problem solving Logical
reasoning Programming concepts
How to make the links from Scratch to Python clear?
SCRATCH & PYTHON
x = 1 while x 22 :! print(var2, "is large")!else:! print("The
sum is", var1 + var2)!
Introduce Assignment
Exploit different syntax to emphasise that assignment is not
equality Python
Means the same as:
Total = Total + ItemCost * Number!
Problems for Scratch & Python
Many simple exercises can be set in Scratch and transliterated
into
Python
var1 = int(input("First value? "))!var2 = int(input("Second
value? "))!if var1 < var2:! print(var2, "is the larger")!else:!
print(var1, "is the larger")!
SUMMARY
Summary
Scratch may be simple but all programming concepts present Teach
Scratch or Python with same learning
outcomes Basic programming concepts Specification and design
Decomposition Testing
Emphasise how ideas transfer
raspberrypi-b-plus-case-master/README.mdRaspberry Pi Model B+
Case==========================
This is a simple acrylic lasercut case for the Raspberry Pi
Model B+.
Build Instructions------------------
green:vector engraving black:raster engraving red:cut
Detailed instructions coming soon.
BOM---
- 3mm acryl- 4x M2.5 10mm screws- 4x M2.5 screw nuts
Visicut color-mapping---------------------
If you use Visicut (https://github.com/t-oster/VisiCut) you can
find a working color-mapping under
[visicut/raspberrypi-b-plus-case.xml](visicut/raspberrypi-b-plus-case.xml)
License-------
raspberrypi-b-plus-case by
https://github.com/diy-electronics/raspberrypi-b-plus-case is
licensed under a Creative Commons Attribution-ShareAlike 4.0
International License.
Raspberry Pi is a trademark of the Raspberry Pi Foundation
Based on the [Adafruit Pi Box - Enclosure for Raspberry Pi Model
A or B](https://www.adafruit.com/products/859)
raspberrypi-b-plus-case-master/concept/raspberrypi-b-plus-case-concept-connectors.svg
image/svg+xml usb HDMI LAN USB USB Raspberry Pi Model B+ Case
connectors by diy-electronics
https://github.com/diy-electronics/raspberrypi-b-plus-case License:
CC BY-SA 4.0 Raspberry Pi is a trademark of the Raspberry Pi
Foundation
raspberrypi-b-plus-case-master/concept/raspberrypi-b-plus-case-concept.svg
image/svg+xml Raspberry Pi Model B+ Case Concept design by
diy-electronics
https://github.com/diy-electronics/raspberrypi-b-plus-case License:
CC BY-SA 4.0 vector engraving raster engraving cut reference line
Raspberry Pi is a trademark of the Raspberry Pi Foundation Top
Spacer Bottom
raspberrypi-b-plus-case-master/images/back.jpg
raspberrypi-b-plus-case-master/images/bottom.jpg
raspberrypi-b-plus-case-master/images/front.jpg
raspberrypi-b-plus-case-master/images/left.jpg
raspberrypi-b-plus-case-master/images/raspberrypi-b-plus-case.png
raspberrypi-b-plus-case-master/images/right.jpg
raspberrypi-b-plus-case-master/images/top.jpg
raspberrypi-b-plus-case-master/raspberrypi-b-plus-case.pdf
raspberrypi-b-plus-case-master/raspberrypi-b-plus-case.svg
image/svg+xml
raspberrypi-b-plus-case-master/visicut/raspberrypi-b-plus-case.xml
4 1 false false Color 0 0 255 255 false 500.0 Engrave engrave false
0 99 1 false false Color 0 255 0 255 false 500.0 Engrave along
lines mark NEAREST false false 1.0 1 false false Color 255 0 0 255
false 500.0 Cut through the material cut NEAREST false true 0.7 Cut
red, engrave all other colors, ignore blue, mark green
raspberrypi-b-plus-case
