7 ms·

The Raspberry Pi Education Manual

60 points by procyon 14y ago

StavrosK 14y ago
I recently discovered you can use the pins on the Raspberry Pi to programmatically toggle switches! As a software guy, I find that magical. I ordered a cheap 8-relay board [1], and I'll hook some stuff up to it and turn my house devices on and off via the internet! [1] http://dx.com/p/8-channel-5v-relay-module-extension-board-for-arduino-avr-arm-51-140703 http://dx.com/p/8-channel-5v-relay-module-extension-board-fo...
- Zuph 14y ago
  Not to burst your bubble, but Raspberry Pi IO pins operate at 3.3 volts, and the board you linked requires 5 volt logic inputs. It might still work, since there are no specs available for the transistor on the board, but don't count on it!
  - StavrosK 14y ago
    The Raspberry Pi provides a 5V out pin at ~ 300 mA, so it should work, if the transistor works at 3.3V. Also, someone has tried it, and it worked. I just hope it's the same board.
    - astine 14y ago
      FYI, It's ok to output at 3v3 volts to a 5v device if the device will still work, but don't read input from a 5v device or you might damage your Pi; the pins are wired directly to the Broadcom chip with no resistance.
      - StavrosK 14y ago
        Oh, indeed, thank you. I don't have anything to read at the moment, but I'll keep it in mind!
cobychapple 14y ago
Original announcement: http://www.raspberrypi.org/archives/2965 http://www.raspberrypi.org/archives/2965 PDF: http://downloads.raspberrypi.org/Raspberry_Pi_Education_Manual.pdf http://downloads.raspberrypi.org/Raspberry_Pi_Education_Manu...
yarrel 14y ago
It's under a NonCommercial license. So not an Open Educational Resource.
- Maxious 14y ago
  See http://wiki.creativecommons.org/4.0/NonCommercial http://wiki.creativecommons.org/4.0/NonCommercial especially "NC Proposal No. 9: Create a new CC license, NC-EDU, that prohibits non-commercial uses, but allows educational uses" for further discussion of this issue.
WhaleBiologist 14y ago
See http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/os/ http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/os/ for some really good tutorials for making a toy OS from scratch on your Raspberry Pi.
hendry 14y ago
ewwww, PDF
- sixbrx 14y ago
  Maybe I'm one of the only ones that don't mind pdf's? Easy to drag onto my kindle for reading on the bus.
- artmageddon 14y ago
  Please feel free to rewrite it in the format of your choice and take the effort to distribute it to everyone. We'll happily wait.
  - sigkill 14y ago
    I'm completely serious when I ask this, but would it be legal? I'm currently unable to load the page so I don't know what it's licensed under.
    - artmageddon 14y ago
      I would assume yes, but I'm not familiar with the Creative Commons License, as noted on page 2 of the PDF: "This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License."

60 points by procyon 14y ago

I recently discovered you can use the pins on the Raspberry Pi to programmatically toggle switches! As a software guy, I find that magical. I ordered a cheap 8-relay board [1], and I'll hook some stuff up to it and turn my house devices on and off via the internet! [1] http://dx.com/p/8-channel-5v-relay-module-extension-board-for-arduino-avr-arm-51-140703 http://dx.com/p/8-channel-5v-relay-module-extension-board-fo...

Zuph 14y ago
Not to burst your bubble, but Raspberry Pi IO pins operate at 3.3 volts, and the board you linked requires 5 volt logic inputs. It might still work, since there are no specs available for the transistor on the board, but don't count on it!
- StavrosK 14y ago
  The Raspberry Pi provides a 5V out pin at ~ 300 mA, so it should work, if the transistor works at 3.3V. Also, someone has tried it, and it worked. I just hope it's the same board.
  - astine 14y ago
    FYI, It's ok to output at 3v3 volts to a 5v device if the device will still work, but don't read input from a 5v device or you might damage your Pi; the pins are wired directly to the Broadcom chip with no resistance.
    - StavrosK 14y ago
      Oh, indeed, thank you. I don't have anything to read at the moment, but I'll keep it in mind!

cobychapple 14y ago

Original announcement: http://www.raspberrypi.org/archives/2965 http://www.raspberrypi.org/archives/2965 PDF: http://downloads.raspberrypi.org/Raspberry_Pi_Education_Manual.pdf http://downloads.raspberrypi.org/Raspberry_Pi_Education_Manu...

yarrel 14y ago

It's under a NonCommercial license. So not an Open Educational Resource.

Maxious 14y ago
See http://wiki.creativecommons.org/4.0/NonCommercial http://wiki.creativecommons.org/4.0/NonCommercial especially "NC Proposal No. 9: Create a new CC license, NC-EDU, that prohibits non-commercial uses, but allows educational uses" for further discussion of this issue.

WhaleBiologist 14y ago

See http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/os/ http://www.cl.cam.ac.uk/freshers/raspberrypi/tutorials/os/ for some really good tutorials for making a toy OS from scratch on your Raspberry Pi.

hendry 14y ago

ewwww, PDF

sixbrx 14y ago
Maybe I'm one of the only ones that don't mind pdf's? Easy to drag onto my kindle for reading on the bus.
artmageddon 14y ago
Please feel free to rewrite it in the format of your choice and take the effort to distribute it to everyone. We'll happily wait.
- sigkill 14y ago
  I'm completely serious when I ask this, but would it be legal? I'm currently unable to load the page so I don't know what it's licensed under.
  - artmageddon 14y ago
    I would assume yes, but I'm not familiar with the Creative Commons License, as noted on page 2 of the PDF: "This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License."