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esm

Member Since: December 7, 2009

Country: United States

Profile

Role

Senior UNIX Geek

Organizations

None that will let me speak for them. :)

Spoken Languages

English

Programming Languages

C, Python, Ruby, Tcl, Bourne shell, Perl, Go

Universities

Brandon University, Brandon, Manitoba, Canada

Expertise

Senior UNIX geek.

Interests

Programming, sport-compact racing/modification, and now electronics.

Websites

http://esm.logic.net/

  • Just a note: this appears to not actually be an 802.3af power source, but rather a passive supply.
    So, if your project actually requires real negotiated 802.3af (some embedded boards, some routers, etc), you may want to check that this will work for you.

  • $19.94?! I’m quite certain I saw this just last week on DealExtreme for only $9.95. Save your money, people!

  • Just FYI: it looks like all the images in this tutorial are throwing “Forbidden” errors.

  • Just FYI: the images (when you click on them) are no bigger than the thumbnails. The images on the 5V/16MHz board product page look right, though.

  • I’ll have to second a few other comments here: the 10k/10k divider on the RX lines had me pulling my hair out for a little while with a touchy SD card (one card worked, even though 2.5V was out of spec, but another card didn’t). Suggestion for a future revision: use FETs for all four lanes. Now, you’ve got a four-port bi-directional level shifter.
    Good example (but skip the voltage regulator):
    * http://www.rocketnumbernine.com/2009/04/10/5v-33v-bidirectional-level-converter/
    * http://www.rocketnumbernine.com/2009/06/13/bidirectional-level-converter-pcb/

  • I think what you’re seeing is a function of community size and involvement; the hobby electronics community, and particularly the “open” community, is significantly larger that the organized open community of physical makers. Low-cost 3D printing and CNC tools are improving that, but it’s still an emerging community.
    From looking through the OpenHardwareSummit website and forum, I don’t think the lack of attention to physical makers (vs. electronics) is an intentional snub; it’s just a natural bias of the experiences of those who’ve chosen to make themselves involved in the process. If you work on electronics all day, you might not feel as though you’re in a position to speak about the particular needs of the 3D printing community, for example.

  • Awesomesauce. I threw in my $5 on a whim, hoping it would be something at least worthy of tuning into a wall ornament. ;-)
    I was definitely not expecting a high altitude sensing board! It powers up just fine, and interacting with it via serial suggests that at least a few of the sensors are just fine (apparently, I need to run my humidifier a little more). :)
    Awesome. You guys just made my day.

  • My kingdom for one of these! :) Apparently a breakout was sold for this at one point in Europe, ready-to-go for breadboard use:
    Picture: http://elektronicaonderdelen.eu/productAfbeeldingen/1488.jpg
    Unsoldered: http://elektronicaonderdelen.eu/?page=product&id=1487
    With connector soldered: http://elektronicaonderdelen.eu/?page=product&id=1488

  • Ah, what I wouldn’t give for the unused pins on the AVR to be exposed somewhere! Those two unused ADCs and three PORTB pins would be great for making this a completely self-contained (sans power supply) project I’m working on. :)
    Wonder how good my fine soldering skills are? :)

  • The fact that you’re requiring a basic knowledge of version control from your sysadmins makes me smile (speaking as a UNIX admin/devops guy who works with too many “sysadmins” who’ve never written a line of code).
    Ah, if only I were in Colorado; it would have been fun being around the SF offices leading up to Free Day. ;-) Good luck finding the right candidates!

No public wish lists :(