For the next three days, Hackaday will be live, in the flesh, at Hotel Pennsylvania in NYC. It’s HOPE X, the biennial conference for hackers, code crackers, and slackers put on by the awesome folks at 2600.
We rolled into Detroit this morning and immediately wanted to know what the teams for the Red Bull Creation were up to. But first thing’s first, what’s the surprise theme? [Brian Benchoff] caught up with [Tyler Hansen] and [Jason Naumoff] who filled us in. The theme is “Reinvent the Wheel”.
The seven finalist teams are competing in a live, non-stop build which started yesterday and continues until tomorrow evening.
In a little less than two weeks, the biannual HOPE conference in NYC will be in full swing. Attendance is more than likely to put you on a list somewhere, so of course we’ll be setting up shop, enjoying the sights and sounds, and throwing swag at hundreds of attendees.
As with all our extracurriculars, Hackaday will be giving out some swag (200+ tshirts, stickers, and THP goodies), and manning a vendor booth. Look for the eight foot Hackaday flag held up with duct tape. We’ll also be doing the usual video and blog thing from HOPE, for all of you who can’t attend thanks to your company’s security reviews, and some super secret things I can’t believe the overlords signed off on.
What did you do over the weekend? I spent both days at Maker Faire Kansas City and it was awesome. This is the fourth year the Faire has been held in Union Station, a stunning Kansas City landmark that celebrates its centennial this fall.
As you might imagine, there were 3D printers galore. One of my favorites was the One Up family from Q3D. These acrylic beauties start at $199 and offer a heated bed plate option.
SeeMeCNC had their Rostock Max V2 printer cooking up some huge prints, and Oni Technology, a local KC company, had their H Bot cranking.
At the Modio booth, my companion and I constructed heroes and monsters from a rainbow-colored pile of 3D-printed body parts and weapons. With Modio’s iPad app, you can create characters from the existing parts library, modify those parts, and print them on any 3D printer. All of the parts are designed to snap together. Modio recently teamed up with MakerBot and hopes to port their app from the iPad to the iPhone and Android in the near future.
I managed to resist the inexplicable Hostess booth and their free piles of Twinkies, Cup Cakes, and Coffee Cakes. They had a display that promised banana Twinkies and some Greek yogurt oddities, but only had the regular stuff on hand. On Sunday, I saw many people lugging around entire boxes of free Donettes and other goodies.
Wait, wait… racing snail? Yeah, this is a pretty neat one from a few years ago. The snail is a relatively large version of a bristlebot (incidentally, we believe bristlebots were originated by EMSL). The thing that’s missing here are the bristles. Instead of using a scrub-brush for this large version, [Lenore] discovered that velvet has a somewhat uni-directional grain. But using a piece of mouse-pad cut to the same footprint as the velvet she was able to get the flat-footed snail to move in a forward direction purely through the jiggle of a vibrating motor.
Two strings, two motors, and some very creative software. That’s the magic behind the Plotterbot, which was drawing Daleks when we crossed its path at Maker Faire. This is the Mark II, which was built after cannibalizing Mark I. Unfortunately we can’t tell you what the difference is between the two.
The machine itself is a pretty nice little package. There is a box that hangs on the wall with a motor/spool combination at each end. In the middle of those two is an Arduino Mega with a custom driver shield. It takes an SD card with the drawing files on it. There is also a small touchscreen display which allowed for easy selection of what you’d like drawn on that paper taped to the wall below the unit.
Back when we were running the Trinket contest [Jay] used the Plotterbot to draw a Skull and Wrenches made out of a multitude of smaller Skull and Wrenches. He was nice enough bring that piece of art and present it to us at the Faire. Thanks [Jay]!
We’ve mentioned that it’s hard to find someone not selling or crowd funding something at Maker Faire. Despite the fact that [Ryan Edwards] is selling his boards, we still got the feeling that he’s a hacker who is selling just to make sure the idea he had is available for other hackers to use. He showed us his interface boards for inexpensive pH probes.
Since we’re always looking for more chemistry hacks to run, it was nice to hear [Ryan's] description on how these probes (which can be had for around $9 on eBay) actually work. It turns out it’s all about salt. When it comes to the electronics, the board provides a connector for the probe on one edge, and pins for voltage, ground, and I2C on another. Rig this up with your microcontroller of choice and you’ll be building your own automatic pool doser, fish tank minder, or one of a multitude of food-related hacks.