For the last several days I've been working to compile the latest free GNU Toolchain for ARM published by CodeSourcery (now owned by Mentor Graphics).
This process has not been easy. In this lengthy blog post, I'll share all the patches I've written, with detailed explanations of exactly what errors I encountered, what I've learned about each problem, and how to work around it.
Edit: full source is on github.
"Read mode" for all the gory details......
We will be taking advantage of the audio/visual system to have an open-mic style event. Think: OpenDork meets OpenMic. Bring your own signal!
I wanted a board that shows the state of all I/O pins on LEDs with all of these properties....
"Read More" for the circuit details and photos.....
A few months ago Charles Buckingham told me about a crowd participatory composition idea he had where every person in a large crowd would have a smart phone that made sound which they could control, to some extent, that combined would form a work of music. After we together made several iterations on the idea: reinterpretations, misinterpretations, experimentation, research, etc. the project became a composition idea for a crowd participatory experiment using home made mylar balloons making buzzing tones and clicking sounds with pizeo transducers, lit up with RGB LEDs and finally popped with model rocket igniters and gun powder.
I go into a lot more detail here: http://blog.x37v.info/2012/10/24/balloons-and-electronics
Here's the video for the talk I gave on Tuesday. I give an overview of Dorkbot and DorkbotPDX and discuss the kinds of things we do.
I gave a talk today at Christof Teuscher's Nuts and Bold Seminar about DorkbotPDX and what we've been up to. The slides are available here:
or for those who don't do google:
Thanks to everybody who showed up and contributed!
After moving twice this summer, I finally got my workbench set up again (at least enough to start building stuff again). So I was able to build the latest version of the LCD ARM dev board (http://dorkbotpdx.org/blog/scott_d/arm_lcd_development_board). It works fine and I think all the errors from the previous version are fixed. So I've attached the Eagle files and the BOM.
Several months ago, I was approached by the Portland band Starfucker (STRFKR) to build them an LED video wall for their upcoming tour. It needed to be large, bright, and durable, but also lightweight, portable, and easy to set up and tear down. They wanted to be able to plug in an iPod or iPad and play videos that are synced up along with their click track so everything goes along perfectly with the music. I enlisted the help of Alex Norman to take care of the software side of the project, and got to work trying to figure this thing out. It seemed like it could be made with mostly off-the-shelf components, and indeed that turned out to be the case. We decided that we would open-source the entire project, for the good of all mankind.
Anyone going to be in New York for the World Maker Faire? I would love to get you in for free if you mind hanging out in my booth for a couple of hours.... I'm kinda worried how busy its going to bee..... Feel free to bring a cool project to show off too!