lakedenman.com

blog.jayfields.com

Jay Fields' Thoughts: Ruby: inject

http://blog.jayfields.com/2008/03/ruby-inject.html

Experiences in software development. Friday, March 21, 2008. I love inject. To be more specific, I love Enumerable#inject. I find it easy to read and easy to use. It's powerful and it lets me be more concise. Enumerable#inject is a good thing. So, to learn about Enumerable#inject I did what I always do, I used it every possible way I could think of. Example 1: Summing numbers. In our example we add the result, 0, to the element, 1. Therefore, the return value of the block will be 0 1, or 1. This ...The s...

namniart.com

namniart - Path Planning for Dagny

http://www.namniart.com/robot/2014/02/16/path-planning.html

Feb 16, 2014 - Path Planning for Dagny. I’ve spent the last few months experimenting with path planning for Dagny. Dagny is an car-type robot, which means that I have a very constrained set of possible motions. In particular, I can move forwards and backwards, and can turn while moving, but can’t turn in place or move sideways. If you’ve ever driven a car and tried to parallel park, you can understand how difficult it can be to maneuver a car-type vehicle. Path planning is hard. Since Dagny’s dynam...

namniart.com

namniart - Teardown

http://www.namniart.com/robot/senior%20project/2010/12/21/teardown.html

Dec 21, 2010 - Teardown. The time has come to take everything I learned last quarter and condense it into new hardware and software for the robot. First, I have to remove all of the old control hardware, to make way for the new. Without further ado, the robot, with all of the old control hardware removed:. The center of the robot. With the electronics and batteries removed, there's a lot of space. All of the old hardware that was removed. Roughly clockwise from lower left:. LED bar and driver board.

namniart.com

namniart - A developer dock for the Motorola Xoom

http://www.namniart.com/robot/2011/11/08/xoom-developer-stand.html

Nov 08, 2011 - A developer dock for the Motorola Xoom. I have a Motorola Xoom that I occasionally do development on, and one of my major complaints about it is that the stock developer stand passes power and audio, but not the USB connection, which makes it great for the average consumer, but completely useless as a stand for my Xoom. I converted mine into a developer dock that passes the USB port, and this is how I did it. I also removed the connectors from the housing, to make things easier to work on ...

namniart.com

namniart - ROS on the Jetson TK1 - part 3

http://www.namniart.com/jetson-tk1/ubuntu/2014/05/21/ROS-Jetson-part3.html

May 21, 2014 - ROS on the Jetson TK1 - part 3. Things hung up overnight on the builds. Again. I bumped into the assimp bug after building for 78 minutes:. I ended up removing the following packages that depended on assimp:. Rviz, and a few things that depended on it:. Rqt robot plugins/rqt rviz. After that, the remainder of ROS built in about an hour. Style Inspired by Lake Denman.

namniart.com

namniart - Software, Part 1

http://www.namniart.com/robot/senior%20project/2011/01/28/robot-software-part1.html

Jan 28, 2011 - Software, Part 1. Since I’m running gentoo on the main computer on my robot, I followed these installation instructions. For ROS. I ran updates on my gentoo machine before installing ROS, so I had ample time to read the documentation. Since I got ROS running on my main computer, I’ve been focusing on software development; all of my code is publicly available on github. Style Inspired by Lake Denman.

namniart.com

namniart

http://www.namniart.com/projects.html

These are all of the fun and crazy projects that might be blog-worthy. Part of the point of this page is to remind me of all the projects I could be working on instead of starting new projects. Adding an iPhone remote to my Sennheiser headphones. Walk/Don't Walk sign and webcam. Wrist Oscilloscope, steampunk style. Making forked-daapd work with my 2nd-gen AppleTV. Nixie Tube clock kit. Home audio streaming setup with linux. Portable backpack sound system. Oscilloscope on Defcon 18 badge.

namniart.com

namniart - Robot Progress

http://www.namniart.com/robot/2012/02/25/progress.html

Feb 25, 2012 - Robot Progress. I’ve made a lot of incremental progress on my robot over the past few months. A lot of it deserves its own blog post; I’ll try to summarize things here, and then follow up with more detailed posts as appropriate. First: the robot has a name: Dagny. Well, its had a name for a while, but it’s finally on the robot:. TODO: picture of one of the front fenders. TODO: screencap of rviz). With all of the software improvements, I’ve upgraded my sensor suite as well. I&#821...Update ...

namniart.com

namniart - New Hardware

http://www.namniart.com/robot/senior%20project/2011/01/04/new-hardware.html

Jan 04, 2011 - New Hardware. My server was down over break, and I was busy actually working on the robot, so I didn't have a lot of time to write up what I doing. I'll try to summarize it as best I can, but this is going to be a long post. Construction photos and new hardware:. New power switches mounted to the robot. They face downward so that I can reach them when the case is on the robot. The new power control boards for the robot, from left to right:. Style Inspired by Lake Denman.

namniart.com

namniart - Open Source Robotics Software

http://www.namniart.com/robot/senior%20project/open%20source/2011/01/10/open-source-robotics.html

Jan 10, 2011 - Open Source Robotics Software. As I continue to make slow, steady and relatively boring progress on the microcontroller firmware for my robot, it’s time for me to start thinking about the software that will run on the main processor. Wikipedia has a good list. Of the open-source robotics software that’s out there, and I’m going to look more deeply at a few of the packages, in particular ROS. And The Orocos Project. In particular, I’m looking for:. Camera and/or Kinect drivers. For now, I t...