Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

I agree with zentera that it looks like a really neat project, I agree with you that using one Pi per limb is a bit overkill. Depending on how many GPIO are required per limb (or let's say each joint in each limb), GPIO expanders or shift registers would fit the bill.

I like the SN74HC595(N) series chips. Eight extra input/output pins for three GPIO, and you can daisy chain them (I've done a maximum of four for 32 extra pins using only three GPIO)

I would suspect you'd also want some form of analog in/out as well for precise feedback. MCP3008's provide eight analog inputs, and something like the MCP4922 provide your analog outs (you could also use a digital potentiometer, or an Arduino via I2C/SPI/Serial). Even with all of that connected, on a Pi3, there will still be GPIO and cycles to spare.


In reply to Re^3: Perl, JavaScript and Strandbeests by stevieb
in thread Perl, JavaScript and Strandbeests by cavac

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others chanting in the Monastery: (2)
    As of 2017-11-18 03:52 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      In order to be able to say "I know Perl", you must have:













      Results (277 votes). Check out past polls.

      Notices?