BobMcCormick

Member Since: September 20, 2011

Country: United States

  • Product ROB-10332 | about 2 years ago

    I can assure you it does indeed work. If you look at the code, it’s very, very simple. If your servo is is going to 170 every time, I would suggest you look at your inputs. My best guess would be that one of your buttons is stuck in the on position or something is pulling the input high.

    Also, unless Sparkfun has changed the build of the claw from the one I have, I’m honestly not sure what screw you could possibly be talking about. Mine is assembled exactly as presented in the pictures on my blog, and works great.

  • News - SparkFun and Censorship | about 2 years ago

    If you’re talking about the video on the MakeZine.com page, you really can’t blame Sparkfun or Make for that. The ad is likely inserted by the video site (UStream) that is hosting the video stream.

  • News - SparkFun and Censorship | about 2 years ago

    What the heck are you babbling about? How did this suddenly become about the City of Boulder?

    What a wackjob…..

  • Product ROB-10825 | about 2 years ago

    The included motors turn faster in one direction than in the other (I think this is pretty common with small hobby motors). Make sure you have your motors mounted so that each of them is turning the same direction. If you go with the intuitively obvious (ie, both with the same side facing outward) you’ll end up with considerably different speeds for each wheel.

    If that still isn’t getting your robot driving straight enough, you’ll need to add an offset in your control application. For example, drive one motor at a max of 255, drive the other slightly slower (240 or 245). Adjust until it’s perfectly straight.

  • News - Parsing GPS with FPGA | about 2 years ago

    The Propeller is a pretty awesome chip, there’s no doubt. But if you’d like a good example of the kind of power and versatility you can get from an FPGA, take a look at the Gameduino. Another cool example is this one, where Jeri Ellsworth uses a Papilio FPGA dev board to reverse engineer and replace a burned out chip on a pinball machine.

    Speaking of the Papilio, it’s a really cool, inexpensive FPGA dev board. I picked one up a couple weeks ago and have been slowly playing with it. I really wish SparkFun would carry them. I also wish they’d carry the Propeller. :-(

  • Product ROB-10332 | about 2 years ago

    For those having problems getting the claw assembled, I put together a description (with pictures) of how I got mine to go together here: http://blasphemousbits.wordpress.com/2011/11/05/sparkfun-robot-claw/

No public wish lists :(