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by csoutreach
Fri Jan 03, 2014 8:44 pm
Forum: Scratch
Topic: is this a Bug ?
Replies: 17
Views: 3463

Re: is this a Bug ?

We're trying to check this out -- do keep reporting your findings thanks!
by csoutreach
Mon Jul 22, 2013 9:20 pm
Forum: Python
Topic: The Gadget Show
Replies: 10
Views: 1361

Re: The Gadget Show

The results were on TV tonight. http://gadgetshow.channel5.com/gadget-show/blog/episode-8-ice-cream-maker-studio-build It appears the Raspberry Pi and PiFace made it easier to program a simple control system than it is to actually freeze ice cream. I think it's time to show The Gadget Show how it sh...
by csoutreach
Sun Apr 14, 2013 8:35 pm
Forum: Add-ons
Topic: PiFace Stacking
Replies: 2
Views: 953

Re: PiFace Stacking

PiFace uses SPI and one interrupt line.

traditionally chip select (CS) allows you to use multiple devices on the SPI bus. The part on the PiFace also has jumpers to set address, so you can stack 4 PiFaces on the same CS line.
by csoutreach
Sat Mar 02, 2013 12:05 pm
Forum: Add-ons
Topic: PiFace and interrupts
Replies: 3
Views: 2621

Re: PiFace and interrupts

The latest PiFaces sold in Farnell have the interupt line from the controller on pin22 of the Pi's pin header -- we've got test code, but nothing production ready
by csoutreach
Fri Dec 21, 2012 5:00 pm
Forum: The Staffroom
Topic: Pi Workshop
Replies: 2
Views: 786

Re: Pi Workshop

We've run workshops in Manchester -- maybe someone in London with a suitable venue wants to get in touch and we can expand what we're doing?

http://networking.stemnet.org.uk/blog/g ... -classroom
by csoutreach
Fri Dec 21, 2012 4:24 pm
Forum: Add-ons
Topic: PiFace instructions?
Replies: 9
Views: 15917

Re: PiFace instructions?

Comprehensive Instructions are coming soon, and even some video tutorials, we promise! There's currently no java support, but it's probably just an afternoon job for someone to write the Python as Java -- we'd be happy to include it with the PiFace distributed software.
by csoutreach
Wed Sep 05, 2012 4:19 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Simple breadboard buffer board working circuit needed
Replies: 13
Views: 3244

Re: Simple breadboard buffer board working circuit needed

Now I've got my Scratch - GPIO project fully running, http://cymplecy.wordpress.com/2012/08/26/scratch-controlling-the-gpio-on-a-raspberrypi/ I realise that I really need the simplest buffer circuit that works (preferably using the cheap ULN2003A chip). If anyone has got a nice little Fritzing file...
by csoutreach
Tue Sep 04, 2012 7:35 am
Forum: Automation, sensing and robotics
Topic: "bird learning" project
Replies: 25
Views: 2370

Re: "bird learning" project

We might be able to help -- it overlaps with a similar bird project we've got --
http://www.youtube.com/watch?v=_-JpbFBC ... lcpt&t=32s

Private Message me with your contact details if you're interested in more.
by csoutreach
Tue Jul 10, 2012 5:25 pm
Forum: The Staffroom
Topic: Scratch for Control Technology
Replies: 14
Views: 5320

Re: Scratch for Control Technology

We struggle with the performance of Scratch too doing IO stuff. We're hoping it's linked to the way it repaints the windows and as such it might be possible to use hardware acceleration somewhere in the Squeak VM. Anyone else got any other progress? You can see the slight lag in the video. http://ww...
by csoutreach
Tue Jul 10, 2012 5:21 pm
Forum: Gertboard classic
Topic: Gertboard Simulation
Replies: 5
Views: 2505

Re: Gertboard Simulation

We've got a simulator for PiFace and are looking at porting it to Gertboard and similar boards -- or if anyone fancies helping us out?
The video shows it working with Scratch, but it works with Python too.
http://www.youtube.com/watch?v=OhaWDUAuajE&t=1m5s
by csoutreach
Tue Jul 10, 2012 8:04 am
Forum: Scratch
Topic: Scratch connectivity
Replies: 21
Views: 12438

Re: Scratch connectivity

We've had some trouble too, we fixed it changing the startup script. Think it's to do with where it looks for libraries. We'll post the code once we've tested it more.
by csoutreach
Sat May 19, 2012 8:45 am
Forum: Other projects
Topic: Linux device drivers for Rapberry Pi on-board I/O
Replies: 97
Views: 42557

Re: Linux device drivers for Rapberry Pi on-board I/O

[*] how do we set the alternative function of the GPIO pins? I've hardcoded it in the my first version, but I think it should be an exported function from the driver bcm2708_gpio.c I tend to agree. I'm going to have a go with pinctrl and trying calling it with a function from my SPI driver. It shou...
by csoutreach
Sat May 19, 2012 8:25 am
Forum: Automation, sensing and robotics
Topic: MCP23S17 as I/O expander?
Replies: 19
Views: 9762

Re: MCP23S17 as I/O expander?

Hi, I' m interested to connect a MCP23S17 to the R-pi for using with scratch. Has someone helpful information? Thanks RABIS50 A good idea! -- Let us know if you design your own board. -- This is our version with Scratch http://piface.openlx.org.uk/scratch-controlling-io-interface-on-raspberry http:...
by csoutreach
Wed May 09, 2012 9:47 am
Forum: Other projects
Topic: Linux device drivers for Rapberry Pi on-board I/O
Replies: 97
Views: 42557

Re: Linux device drivers for Rapberry Pi on-board I/O

<r>Frank Buss said: <br/> <br/> <br/> The driver is working now! The problem was the initialization order: The I2C-GPIO driver was initialized before the Broadcom GPIO driver. I"ve changed the GPIO driver initialization order to arch_initcall, which should be the right moment, because the GPIO pins ...
by csoutreach
Mon May 07, 2012 10:21 am
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

<t>rew said: <br/> <br/> <br/> I think the SPI driver should "pull" the GPIO pins it uses towards the use it implements.<br/> <br/> A driver would also enable the "data direction" bit of an output pin that it uses wouldn't it?<br/> <br/> <br/> Thanks for the input -- is that a vote against pinctrl t...
by csoutreach
Sat May 05, 2012 9:27 pm
Forum: The Staffroom
Topic: Scratch for Control Technology
Replies: 14
Views: 5320

Re: Scratch for Control Technology

<r>I can't say too much just yet, but you might be interested in a forthcoming announcement for schools, scratch and control….<br/> <br/> Let's just say we're pretty sure it's possible to control GPIO with scratch and the architecture diagram may give a hint.<br/> <br/> <URL url="http://piface.openl...
by csoutreach
Fri May 04, 2012 1:37 pm
Forum: Other projects
Topic: Wanted: Beta testers for SPI driver.
Replies: 13
Views: 2472

Re: Wanted: Beta testers for SPI driver.

There's also an original thread here --

http://www.raspberrypi.org/for.....-3/#p73509
by csoutreach
Fri May 04, 2012 1:35 pm
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

<r>pinctrl was being uncooperative and caused delays so it's not in the first patch.<br/> <br/> However the first release of SPI kernel driver is available here:<br/> <URL url="http://piface.openlx.org.uk/ra.....ilable-for">http://piface.openlx.org.uk/ra.....ilable-for</URL>.<br/> <br/> If you don't...
by csoutreach
Fri Apr 27, 2012 4:21 pm
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

<r>I think it  probably would be easier if pinctrl was available - it seems the right way of doing pinmultiplexing based on the options I've seen. I was checking to see if anyone knew of a better way to do it?<br/> <br/> Oh, and people asking about progress, today's video is flashing lights. <URL ur...
by csoutreach
Thu Apr 26, 2012 5:15 pm
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

<t>Pin muxing is proving a problem. linux / drivers / pinctrl isn't in the Raspberry Pi kernel sources.<br/> <br/> Anyone got any suggestions of how setting up pin functionality should be done? bcm2708_gpio has the appropriate function bcm2708_set_function, but it's not where I'd expect to be? Presu...
by csoutreach
Thu Apr 26, 2012 11:58 am
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

Thanks, it will be great to have some people to test it. We might have bits of hardware to try for the lucky few too!

We're hoping to get something out tomorrow. We'll keep you posted!
by csoutreach
Wed Apr 25, 2012 5:56 pm
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

It's very nearly there!

Video demonstrating kernel driver for SPI.

echo 'x' > /dev/spidev0.0

http://piface.openlx.org.uk/sh.....river-with
by csoutreach
Wed Apr 25, 2012 10:42 am
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

by csoutreach
Wed Apr 25, 2012 10:42 am
Forum: Other projects
Topic: I wrote a SPI driver, now what?
Replies: 38
Views: 6273

Re: I wrote a SPI driver, now what?

We've got an SPI driver http://piface.openlx.org.uk/ that we're testing today.

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