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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

ubrch

Member Since: April 4, 2006

Country: United States

  • The group photo demonstrates the correct amount of dog per unit volume.

  • Something I realized after leaving school: Time is often the most expensive resource on your project.

    If the difference between making and not making my project deliverable was a few damaged SD cards, I’d damage the SD cards.

  • How do people become this ungrateful? Sparkfun isn’t in charge of determining how valuable your time is. If Free Day ended with you feeling like you spent eight hours on a hamster wheel, it’s your own fault.

    I tried maybe 150 or so attempts, and then stopped. I didn’t win anything, but I’m definitely not bitter about it.

  • Also not very rigid, and usually possessing only the “P” component of proper PID control. Where a real industrial servo would track right to the set point, an RC servo will do the characteristic snap-wobble-wobble motion, just like you see in the video.
    The also typically use potentiometers as sensors, which isn’t the best thing to use if you want the motions of your robot to be repeatable.
    I’d love to see SparkFun make a high-performance PID module that will allow me to control a motor with a variety of sensors (SPI-output encoders in absolute/graycode, quadrature, pots, etc).

  • I’m going to hang out near the Sparkfun display at my local Microcenter wearing thick-rimmed glasses and tell people that I was ordering from you guys before you were mainstream.
    I also get electronics from this other place. You’ve probably never heard of them, they’re pretty obscure.

  • Any idea if there’s a source for more joint options, e.g. gussets and plates?
    T-slot framing systems are the black tar heroin of prototype design. You always need a little… bit… more…

  • I actually asked this in the forums in late January:
    http://forum.sparkfun.com/viewtopic.php?f=14&t=26044&p=118688#p118688
    However, I emailed the question in, and John from Tech Support got back to me fairly quickly and answered. In a nutshell, a hoof tip for large PTH (http://www.sparkfun.com/products/9928), a 0.1mm tip (http://www.sparkfun.com/products/619) for all other PTH, and hot air for SMD. If hot air isn’t available, then he just used the finest tip he could find.
    Personally, I don’t have a hot air station, and for SMD I like to use a fine, bent tip. When you tin one of these with solder, you can collect a very small amount of it on the outer edge of the bend. The object is to get a tiny amount of solder to collect in a droplet at the very end of the tip, so it can be “painted” onto the pin. I was just wondering if anyone else did it this way, because not all bent tips seem to be good for this, and if some of them are, I want to know which ones. :)

  • “We hope these videos are helpful and feel free to pose additional questions in the comments for the next "According to Pete.”“
    …?

  • Awesome!
    I have a question:
    I noticed that I occasionally see Hakko FX-951 soldering stations in SparkFun videos. Hakko offers approximately 700 million different types of soldering tip that fit irons like the 951, and without using them it’s impossible to tell which ones are best for various tasks.
    I’m curious about the soldering tips you use for SMD and PTH, if there are other tips that you find useful to have around, and why. Do you issue a standard set of tips to people that do assembly?
    Thanks!

  • All this bitching sort of reminds me of the experience people get working at a soup kitchen, giving out free meals to the homeless.
    Do you think they’re going to love you after you give them something for free? Of course not. They’re going to hate you for not giving them more. :) Srsly, I’m glad some people realize that this was an extraordinarily charitable gesture.
    Also notice: Some of the most vitriolic comments are from people who registered just in time for Free Day. The patronage that they’re loudly announcing will be taken elsewhere isn’t worth very much.

No public wish lists :(