I am using python and the "import pifacedigitalio" statement and it makes it very easy

to control the Pi Face board.

Hi Doug,

Do you mean that you can compile Piface programs with the original NOOBS software?

In other words, you don't have to bother about those .img files?

Thanks in advance,

Åke

I got another question.

The files that I have downloaded from pi.cs.man.ac.uk have all been compiled for the 4 Gb Raspberry Pi boards.

I have got 8 Gb on my board. Can an 4 Gb program execute in a 8 Gb memory?

If that is no, then is there an 8 Gb version available?

Regards,

Åke

Hi Ake; Can I ask why you appear to be downloading obsolete files from a site which says:

These images are not updated any longer -- use the latest version of Raspbian and follow the steps here

I followed the link and got to PiFace – Install PiFace Digital Software – Installing PiFace Digital modules which said:

To install the PiFace Digital software run the command:

sudo apt-get install python3-pifacedigital-emulator

Enter Y when prompted.

Then reboot

I just did it on my 4Gb card, took me under 2 minutes including reboot. At what stage is this recommended method failing for you?

Well I read the PiFace documents and under "Quick Start Guide" it said:

I believed it, so there is why I have spent several hours trying to get it to work.

I will try your recommendation as quick as possible. Unfortunatly I will be out of my home for some days, but I will tell you if it is a success or not.

Until then,

Thanks and bye-bye

Åke

Åke Webjörn I know I never loaded any .img file to get the pifacedigitalio library. 

Now mind you I am 72 so my memory isn't the greatest but I think it came with the

latest rasbian wheezy card.  I did not load NOOBS because I wanted only the Rasbian OS.

I am sure you can find it here https://github.com/piface/pifacedigitalio/

EDIT::: I found the instructions

Install

Make sure you are using the lastest version of Raspbian:

$ sudo apt-get update $ sudo apt-get upgrade 

Install pifacedigitalio (for Python 3 and 2) with the following command:

$ sudo apt-get install python{,3}-pifacedigitalio 

Test by running the blink.py program:

$ python3 /usr/share/doc/python3-pifacedigitalio/examples/blink.py

I have used it to control the lights using a PIR sensor on the input and a 5V LED lamp on the

output.

Here is the code:

import pifacedigitalio

from time import sleep

pfd = pifacedigitalio.PiFaceDigital()

lampon = 0

while True:

    tmpval = pfd.input_pins[7].value

    if tmpval == 1:

        if lampon == 1:

            pfd.leds[7].turn_off()

            lampon = 0

        sleep(.5)

    if tmpval == 0:

        if lampon == 0:

            pfd.leds[7].turn_on()

            lampon = 1

            sleep(30)

Åke Webjörn I know I never loaded any .img file to get the pifacedigitalio library. 

Now mind you I am 72 so my memory isn't the greatest but I think it came with the

latest rasbian wheezy card.  I did not load NOOBS because I wanted only the Rasbian OS.

I am sure you can find it here https://github.com/piface/pifacedigitalio/

EDIT::: I found the instructions

Install

Make sure you are using the lastest version of Raspbian:

$ sudo apt-get update $ sudo apt-get upgrade 

Install pifacedigitalio (for Python 3 and 2) with the following command:

$ sudo apt-get install python{,3}-pifacedigitalio 

Test by running the blink.py program:

$ python3 /usr/share/doc/python3-pifacedigitalio/examples/blink.py

I have used it to control the lights using a PIR sensor on the input and a 5V LED lamp on the

output.

Here is the code:

import pifacedigitalio

from time import sleep

pfd = pifacedigitalio.PiFaceDigital()

lampon = 0

while True:

    tmpval = pfd.input_pins[7].value

    if tmpval == 1:

        if lampon == 1:

            pfd.leds[7].turn_off()

            lampon = 0

        sleep(.5)

    if tmpval == 0:

        if lampon == 0:

            pfd.leds[7].turn_on()

            lampon = 1

            sleep(30)

Dear Doug,

Thanks for your excellent letter! I came almost thru it, when the Pi complained that I must have the SPI enabled to be able to get the PiFace running.

Can you tell me how to do it?

I have seen it somewere, but it is easier to ask someone, than to do it yourself.

Regards,

Åke

(I'm 62 years old myself)

using the command line:

• • type "sudo raspi-config" and press enter

  • Select option 8: "Advanced options"
  • Select option A5: "SPI"
  • Select "Yes"
  • Select "Finish" to exit

Thanks everyone who has been involved in helping me to get a piece of code to show a blinking LED on the PiFace Digital board.

And a special thanks to Doug and Frederick.

I am really grateful!

Thanks again!

Åke

Thanks everyone for looking at my perhaps rather severe comments, but I have spent over a week trying to get Piface working but still can't import the module. The download of digitalis seemed to go ok as did the emulator. The emulator works for about 30 seconds and then does uncontrollable odd things and the processor activity is 100%.

I have to use Ctrl/Alt/Delete to stop it and it still remains on screen!

However when I try to "import Piface-digital", it still says "no module"

Help please.

TTFN

Alan

Thanks everyone for looking at my perhaps rather severe comments, but I have spent over a week trying to get Piface working but still can't import the module. The download of digitalis seemed to go ok as did the emulator. The emulator works for about 30 seconds and then does uncontrollable odd things and the processor activity is 100%.

I have to use Ctrl/Alt/Delete to stop it and it still remains on screen!

However when I try to "import Pifacedigitalio", it still says "no module"

Help please.

TTFN

Alan

Install

Make sure you are using the lastest version of Raspbian:

$ sudo apt-get update $ sudo apt-get upgrade 

Install pifacedigitalio (for Python 3 and 2) with the following command:

$ sudo apt-get install python{,3}-pifacedigitalio 

Test by running the blink.py program:

$ python3 /usr/share/doc/python3-pifacedigitalio/examples/blink.py

Thanks everybody for helping me.

I believe that this subject is now closed.

I'll input a new question if I get into trouble!

Have a nice day,

Åke