The Galileo project is progressing, and the next step is a board to drive its many many LEDs.
Center column of Galileo display
Dave B. put together a schematic and board in EAGLE for this purpose, based around the TI TLC5940, a 16-channel LED driver, and had the boards made at DorkbotPDX. Schematic is here, board layout here.
(Sorry for the light fogging. I really should just get a real macro lens instead of putting an old Series E 50mm on extension tubes.)
Paul and Jim then used the laser cutter to make a solder mask out of acetate film (i.e. garden-variety transparencies). The cream layer in EAGLE provided the mask to cut, and here’s the stencil created from that:
Here are two of the attempts to laser-cut this stencil from acetate sheets. The imperfection on the top one (see the right of the two holes on the bottom left) came from etching the edges of the hole rather than rastering it, supposedly; the bottom one came out a bit better.
More successful cut
Here’s one finished board, having had solder paste applied through the stencil and reflowed on a cheap electric skillet. It looks good aside from a solder bridge at the chip’s 2nd- and 3rd-to-last pins:
Keep following the Wiki page - the project progresses pretty regularly and Jim updates the page.
Hive13 is offering another Arduino 101 class. This is a great intro class designed to get the student comfortable with using an arduino and how to build out their ideas. This class has been taught at UC in the design school and is targeted to teach from the ground up. You do not need to have any electronical or programming background to attend this class. This is a hands on class where you will build out cool blinking light projects and play digital music over a speaker all using a tiny microcontroller.
This class is always a lot of fun and will teach you the tools you need to build out any project on the arduino. You will become comfortable using the kit and troubleshooting problems. You will learn how to use the many wonderful arduino resources to expand your knowledge and learn how to use new components. This class will not use slide show presentation but is 100% hands on and you are encoraged to work in groups or with friends.
In this class you will use an Arduino, breadboard, wall wart, wires, LEDs and speaker. You should bring a laptop and a USB cable to program the ardiuno. These are the USB A to B cables (http://www.sparkfun.com/products/512) We will have some on hand but you will have to share. We are offering two types of tickets. One with the kit and components included and another ticket price to bring your own arduino. We will supply LEDs and speakers regardless of which ticket you purchase.
It is recommended you download and install the Arduino software ahead of time. Software and installtion instructions can be found here: http://arduino.cc/en/Main/Software
The instructor for this class is Craig Smith (http://www.linkedin.com/in/agentcraig)
Just got back from the Opensource Hardware Summit and I have 20 Hackerspace passports that I picked up from +Mitch Altman. These passports can be used while you are visiting other hackerspaces around the world. You simply bring your passport and have the hackerspace stamp it. Simple! These are very new and not all hackerspaces have stamps just yet but you might as well get your passports now! I will be bringing a stack of them to the Hive on Tuesday. They are $3 each (This is the price I paid for them) I should have enough for anybody who is interested.
More info on the passports can be found on adafruits blog.
I took forever to post this item, but here it finally is. The Hive had an experimental music show (the post about it is here) months back, and Douglas Lucas kindly shared his photos from the event.
Here is LitterBoxFriends:
Here is Mu (and the aforementioned Douglas Lucas):
And here is Thriftsore Boratorium:
Last night Jon and a visitor to the hackerspace, Al, spent a good amount of time working on getting this set up. It is now securely mounted to the wall and thanks to Jon we have an assortment of chalk waiting to be used for your drawing and diagramming pleasure. The chalkboard came from a member of Ars Clan who offered the chalkboard to us over a year ago. Pickup coordination fell through several times, however a month or two ago the chalkboard arrived in all its glory.
*Note* While we have plenty of chalk, we appear to be missing erasers… We should probably rectify this situation.