Computing stuff tied to the physical world

ARMs on Foam

In Hardware, Linux, ARM on Sep 29, 2012 at 00:01

One of the things I’d really like to do is hack on that Laser Cutter I described recently.

The electronics is based on a LaOS Board, but I’d like to see what you can do with an embedded Linux board such as a Raspberry Pi in this context – driving that LaOS board, for example. Because adding Linux to the mix opens up all sorts of neatness.

So here’s my new prototype development setup:

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That oh-so-neat foam board acts as base, with two PCB’s fastened to it using, heh … remember these?

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They’re called “splitpennen” in Dutch. Long live foam board and splitpennen!

This is a pretty nifty setup, in my opinion. Tons and tons of ways to implement features on this combo, and there’s plenty of power and storage on both boards to perform some pretty neat tricks, I expect.

Anyway – this is more a big project for cold winter days, really. It’ll take a long time before anything can come out of this, but isn’t it incredible how the prices of these things have reached a point where one can now dedicate such hardware to a project?

  1. Lucky you, to get the Rev.2 R-Pi board that has mounting holes! Is there a word in English for that paper fastener? I can’t bring one to mind. Maybe it’s just the photo, but those wires on the R-Pi GPIO connector look almost ready to short out. I usually use this kind of connector: http://www.adafruit.com/index.php?main_page=popup_image&pID=266

    • Hot glue solves all problems… Mounts the RPi and insulates the wires…

      It also gets on your hands, trousers, carpet, table…..

  2. Speaking of the R-Pi GPIO connector, there are more grounds on it than were at first advertised, which is convenient when several things are connected the way you show here. I just updated the pinout drawing on the eLinux wiki page: http://elinux.org/Rpi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29

  3. There’s almost always an English word/phrase, if not three, just to make mastering the language so difficult ;-)

    Brass split pin or Brad works.

  4. As a native American English speaker, I’ve always called them “paper fasteners,” although I’ve heard them called “brads.”

  5. Go figure out, these split pins are called ‘attache parisienne’ in french. So romantic… http://fr.wikipedia.org/wiki/Attache_parisienne

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