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.
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.
Cinci2600 is this Friday, May 6th at 7pm. For those of you who could not make it to Notacon this year, I will be giving my talk on corporate evil. If you have something that you would like to present, or if you have something cool to demonstrate please feel free to bring it and show it off. Also feel free to take advantage of the hive being open to hang out and work on stuff.
It’s here! This Saturday is the sumobot competition! We have a lot of great contenders registered for the event and it is shaping up to be an awesome time!
The event starts at 6pm and is scheduled to run until 9pm. This is a free family friendly event. We will have snacks available but you may want to stop to grab a real meal before the event. If you want to bring some snacks you can. Setup will start at 4pm for those who are volunteering to get the event ready. The door to Hive13 and Cincinnati Fitness Boxing are on the side of the Anchor Building under the glass blocks. There is a sign on the door for both. If it is nice we may have the door open as well as the large gym door on the south of the building. You can park along the street, at the parking lot on the south of the building or in the lot across the street but please don’t park behind the building because that is for other tenants.
When tweeting about the event be sure to include @hive13 and @roboweek. Roboweek is for the National Robotics Week that we are taking part in. You can also use the hash tag #roboweek. They will RT and promote any messages with those tags. For flickr tag your pics with both ‘sumo13′ and ‘roboweek2011′.
Special thanks to Dave B, Jason, Chris Davis, and all of the other people who have been working hard to help construct additional workspaces for the hackerspace.
The workbench to the right of this post was built from plans purchased by Jason. It has wheels that can be raised and lowered easily. When the wheels are raised up the workbench provides a very stable surface to work on.
One of our newer members Dave Blundell donated a workbench and Chris Davis assisted him in moving it to Hive13. It is a very solid workbench with two shelves under it. It has a vise mounted on it and pegboard behind it. Since the picture was taken we have moved the drill press onto it and mounted a couple power strips on the wall behind it.
At long last, we’ve completed mounting v2 of the glass block LED matrix in our window. Kudos go to everyone who donated time, money, and advice to finish it. There is a bit of cleanup work needed, but the major work is complete. Check out this video of it in action:
Hive13 aims to create a place where a diverse community of makers can collaborate and pursue creative projects. Hive13 promotes science & technology education, open source values, and skill sharing amongst it’s members and the community.