Hackerspace Tours: Omaha Maker Group

Members of the [Omaha Maker Group] in Omaha, Nebraska affectionately call their space The Makery. This hearkens back to their humble beginnings in a 900 square foot space that formerly housed a bakery. There was one measly electrical outlet and they had to travel to the nearest restroom, often on vehicles they made. It was in this small space where they built the workbenches and forged the friendships that created the inviting hangout they have today.

[OMG] has been in their current, more centrally located space for the last two years. It was there that I met [Eric] and [Ben] for a few hours in the evening before Maker Faire, for which they are largely responsible. [Eric] had spent the day setting up at the Omaha Children’s Museum and he and [Ben] were kind enough to give me a detailed tour.

MAMEThe new space is a progression of rooms that begins with a combination lounge and meeting space. Here you’ll find the beer and snacks, the brag wall full of framed articles, and one of the remote controllable web cams. A few of the founding members have since flung themselves around the world, but are able to participate through these links. The best part of this room is either the PVC-framed Raspi MAME cabinet or the sign on the bathroom door which doesn’t discriminate against androids.

 

modified Mendel

Next up is a smallish room with their 3D printer, a modified Mendel with a spool holder made by one of the members. There’s a large pile of glue sticks next to it to help prints adhere to the bed. That was a new one to me. [Ben] says they work almost too well. Next to that is their K40 C02 laser cutter that they modified to operate only when closed (!). They’ve also added LEDs and an exhaust fan. The cutter was internally crowdfunded in about three days. This method works well for them according to [Eric]; no one spends money on equipment they won’t use. They are currently in the process of building a second, bigger one using a donated frame.

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Pick And Place Machines At Maker Faire

A few years ago, every booth at a Maker Faire had a 3D printer. It didn’t matter if 3D printing was only tangental to the business, or even if the printer worked. 3D printers have finally jumped the shark, and there’s going to be an awesome t-shirt to reflect this fact. This year there weren’t many 3D printers, leaving us asking ourselves what the new hotness is.

Pick and place machines. We couldn’t find many at the faire, and only Carbide Labs’ Pick and Paste machine was working on picking up small resistors and LEDs the entire faire. Carbide’s Pick and Paste machine is exactly what you would expect in a pick and place machine: it picks up components out of tapes and wells, orients them correctly, and plops them down on a board.

The killer feature for the Pick and Paste is its modular design. The toolhead is expandable, allowing anyone to add a second vacuum nozzle to double the rate parts are placed, or a solder paste dispenser. The guys didn’t have the paste dispenser working for the fair (leaded solder and kids don’t mix), but this machine is effectively a combination pick and place machine and solder paste dispenser, something that’s usually two machines on an assembly line.

Also at the faire was Tempo Automation. They’re in a pseudo-stealth mode right now, waiting until everything works perfectly until bringing their machine to the masses. It is, however, exceptionally fast and about a third of the price of a similar machine.

The only other pick and place machine at the faire was the Firepick Delta, one of the more popular projects on hackaday.io and one of fifty finalists for the Hackaday Prize. Unfortunately, the FirePick Delta was broken in shipping, and although [Neil] was sitting right next to the 3D printing guys, it would have taken all weekend to repair the machine.

Lamp Comes To Life With Ultrasonic Sensors

Fans of the bouncing lamp from the Pixar corporate logo will enjoy [Daniel]’s latest project. It’s a motion controlled desk lamp that uses ultrasonic sensors to control its physical position.

The core of the project is an Arduino and the three ultrasonic sensors. The sensors act as range finders, and when they are all working together under the direction of the microcontroller they can tell which direction a hand was moving when it passed by. This information is used to drive two servos, one in the base and one on the lamp’s arm.

The project requires an articulating desk lamp of some sort (others besides the specific one [Daniel] used shouldn’t be much of a problem as long as they bend in the same way). Most hackers will have the rest of the parts on hand, with the possible exception of the rangefinder. The code is up on the project site for a look-see or in case you want to build your own.

The only problem that [Daniel] had when putting this all together was that the base was a little wobbly. He was able to fix that with some thumbtacks, and we think the next step for the project should be switching the light on and off over the internet.

CircuitMaker From Altium

Altium recently announced CircuitMaker, their entry into the free/low-cost PCB design tool market. They’re entering a big industry, with the likes of Eagle, KiCad, gEDA, and a host of other tool suites. We had a few minutes to talk with Max in the Altium booth at World Maker Faire, and even got a bit of time with the tool itself.

Hands on, it definitely has the look and feel of Altium Designer, right down to the familiar yellow and green boxes for schematic and sheet parts. Center stage was the 3D view, a feature which Altium has had in their software since the late 90’s.

CircuitMaker’s website is pushing the collaboration aspect of the software. Design choices can be reviewed and commented on in real-time. This also suggests that the data files will live in Altium’s own cloud storage system.

CircuitMaker is still in the pre-beta phase, but they’re looking for beta testers now, so head over to the site and sign up!

AUTOMATIC DOG FEEDER

The Thurber Feeder 5000 Helps To Slow Fido Down

Does your dog eat too fast? [Thurber] does, and he even chokes occasionally while snarfing down the kibble — naturally this worried his owners, so [Jason] stepped up to the challenge to slow him down. Introducing the Thurber Feeder 5000.

[Jason] is a seasoned maker, and has built a few CNC machines in his day — he’s even automated an Etch a Sketch with stepper motors. Making the Thurber Feeder 5000 was a piece of cake. He designed the entire thing in 3D CAD and then used his home-made CNC machine to cut out all the parts, 3D printing a few of the more complex mounting brackets.

It’s a fairly simple device consisting of a food hopper (seal-able to keep Thurber away), a stepper motor and an auger bit borrowed from a chocolate fondue fountain. The stepper goes through a 6:1 belt pulley ratio which gives it a whopping 200 oz-in of torque to push those kibbles and bits through the feeding pipe. The speed is adjustable by programming the Parallax Propeller, so once they found an acceptable eating speed [Jason] set it as default. A single button turns it on, and while the machine is running it lights up — turning off when little [Thurber] is done.

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Push-Button Degaussing For An Arcade CRT

[Ed] was tasked with adding push-button degaussing to an arcade cabinet’s CRT console. The display can be rotated to portrait mode for games that require it, but each time this is done, the magnetic fields get out of whack.

Fortunately, the schematics arrived with the display. [Ed] found that the degauss coil is connected in series with a PTC fuse in an odd arrangement that he didn’t agree with. He decided to use an SSR to switch the coil, and after making lots of transistor-based designs on paper, grabbed a nearby Arduino.

[Ed] took off the PTC and soldered in two wires to its pads for the SSR. He added a wire to the power supply decoupling cap to power the new deguassing circuit and connected the SSR to the Arduino as an open collector input. There was just enough space available to mount the relay to the frame’s base and the Arduino on the side. [Ed] wrote a short method to trigger the SSR and reconnected the PTC fuse. Now it degausses at power up as well as on demand.

43oh.com Wasn’t Next To The Texas Instruments Booth

In addition to all the cool boards and booster packs found at Texas Instruments’ booth at Maker Faire, the folks from 43oh.com made a showing, but not next to the TI booth. In fairness, the TI booth was right across from NASA. 43oh is cool, but not NASA cool.

[Eric], known on the 43oh forums as [spirilis] showed off a few of the neat bits and bobs developed on the forums including a lightning detector, a VFD clock, a robot, and a whole lot of blinky things. There was an astonishing array of projects and boards at the booth, covering everything from OLEDs to motor drivers.

43oh is an interesting community centered around TI’s microcontrollers, like the AVRfreaks forum built around Atmel’s offerings. 43oh has a very active forum, IRC, and a store featuring projects made by members. It was great to see these guys at the faire, and we wish more of the homespun unofficial communities would make more of a showing at cons in the future.

Sorry about the mic cutting out in the video above. There was a sea of spewing RF near the booth. If anyone has advice for a *digital* wireless mic setup, we’re all ears. This is the current rig.