The Raspberry Pi Education Manual

StavrosK 13 years 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-fo...

Zuph 13 years 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 13 years 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 13 years 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 13 years ago | | |

Oh, indeed, thank you. I don't have anything to read at the moment, but I'll keep it in mind!

cobychapple 13 years ago |

Original announcement: http://www.raspberrypi.org/archives/2965

PDF: http://downloads.raspberrypi.org/Raspberry_Pi_Education_Manu...

WhaleBiologist 13 years ago |

See 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.

yarrel 13 years ago |

It's under a NonCommercial license.

So not an Open Educational Resource.

Maxious 13 years ago | |

See 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.

hendry 13 years ago |

ewwww, PDF

artmageddon 13 years 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 13 years 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 13 years 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."

sixbrx 13 years 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.