AdamTolley

Member Since: April 19, 2008

Country: United States

Profile

Bio

Phobia of entropy with requisite love of irony.

Role

Software Engineer

Organizations

Applied Information Sciences

Spoken Languages

English, Nerd (Geek Dialect)

Programming Languages

C#, Java, JS, Spin

Universities

BS in CS: Hood College, MD AS in CS: Frederick Community College, MD

Expertise

Web Applications Development

Interests

Electronic Music, Robotics, Medical Imaging, CAM,

Websites

http://refactorized.blogspot.com/

  • The platform. The dumb misaligned rows, and the layout everyone knows. The Atmega 328, onboard 5 and 3.3v regulator that requires a 7+ v power supply. The IDE used to program the thing and a bunch of libraries scatted about my favorite sites.

    To me buying a RedBoard is buying an Arduino, and that’s probably what I will continue to do, leaving the complexities to people I trust.

    I really don’t care that some other company manufactures the official ones; I only care about the contributions such a company may have made to the platform and community.

    The cool thing is, the platform is open source hardware, and community held knowledge. Its durability is a huge validation for the concept of OSH.

  • What about the physical orientation of these motors makes them more apt to track? Is there a prescribed encoder set-up?

    Edit: The complete kits sold here (and mentioned in the product video) include encoders with magnets and hall effect sensors that mount to the gearbox bodies, but they seem specially designed for each other, so I would skip these and go with the kit if I was looking to use encoders.

  • This was my thought on the issue of accumulated error.

    I have heard that the the resistors don’t actually distribute over a Gaussian / Normal / Bell shaped distribution however; instead they look like a bell with a notch removed from the center - that notch being the higher precision resistors removed from the batch. This would not weaken your case however, and may actually strengthen it.

  • Thanks for clearing that up.

    I (as a web developer, and someone who has done a fair bit of user research) agree that it’s a difficult problem with potential impacts on the checkout process.

    Amazon does transparent packing optimization, but now that I think of it, that does not seem to affect the cost.

    Anyway it’s good to get a nice reason why, its easy to forget that features have to be implemented even when it’s what I do.

  • Yes, agree to all of that - but being able to (optionally) defer shipping to the end of the day, or even possibly to tomorrow seems like a win-win-win to me:

    I pay less for shipping

    Sparkfun sells more, and only pays for minimal shipping.

    As a trade, my shipping expectations can be pushed back a day or so, which eases the burden on the shipping dept.

    I’m not complaining - it’s a nice sale, but I won’t likely participate, because I would end up padding my car too much.

  • There really should be a way to combine shipping for all items bought in a day, especially if they all ship in a single box.

    Without that, most of these deals don’t end up being that great, unless you buy multiples.

  • Wish I could star this twice.

  • Alright anyone who is wearing their normal get up please get a red wristband so we know you are not in the costume contest.

  • Right; I think this is the guide I used when converting mine:

    http://www.instructables.com/id/Convert-A-Computer-Power-supply-to-a-Bench-Top-Lab/

    It’s super useful, but be careful, obviously. I needed the Resistor, and its likely with newer switching-mode PSUs, you will need it too. This kit is nice though, and requires much less time and danger. You can likely just place the load resistor across a different set of pins on the power supply ( like at one of the standard 4 pin molex connectors) and not busy up such a handsome board, with a blocky dangly resistor.

  • Yeah, that’s a huge miss, especially considering the big (ceramic?) ones are not always just laying around.

    To have one on the board, instead of at the ends / terminals would be very helpful.