Orientation and Open House: Sunday October 27 at 4PM

knife flamesPS:One orientation (previously known as N00bs’ Paradise) is happening Sunday at 4pm in the downstairs lounge.

Never been, but want to learn more about PS:One?
New member?
Old member, but want to know all the secrets of the inner workings of PS:One?
Want to get certified, but don’t know how?
Want to doocritize, but haven’t even heard of do-ocracy?
Then this event is FOR YOU!
Free, open to all event – just show up at 4pm on Sunday the 27th

You’ll learn:

  • the one and only rule you need to remember at PS:One!
  • what mailing lists and IRC channels you should join
  • how to get discounts on classes, tee-shirts, stuff around town, and even monthly dues!
  • how to get certified on equipment
  • how to donate equipment to PS:One
  • how to create a class, event, group, meeting, or what have you
  • how to request a class, event, group, whatever
  • how to blog
  • the wiki.
  • do-ocracy and how to do-ocratize things

The basics:

  • Who: anyone who wants to learn more about PS:One and how it works
  • When: Sunday, October 27 at 4pm
  • Where: PS:One 1st floor lounge
  • Cost: free

Here are the class notes – please feel free to read beforehand (Note: these notes are not a good substitute for class attendance).

25

10 2013

An ARM-Based SBC with an RTOS

 A couple of NERPs ago Russ Porte gave a 15 minute intro to the Freedom Board, an inexpensive single board computer.

FRDM-KL25Z_BDTN

Tonight, Russ will present a closer look at the Freescale FRDM-KL25z, using some of the built-in peripherals to start building an interactive device. While building, we’ll cover some i2c basics and learn how using an RTOS can solve synchronization problems.

1) Prototyping on the Freescale FRDM platform.

2) Brief intro to the MMA8450Q Freescale three-axis accelerometer using i2c.

3) Brief overview of synchronization problems and how RTOS primitives can help you solve them.
ALSO

Drew Fustini has passed along a heads-up about NERP being mentioned by Jason Kridner in a twit.tv interview. http://twit.tv/show/floss-weekly/269 Jason works at TI and is one of the designers of the Beagle Bone. It’s very cool that he enjoyed visiting NERP last August . Jason has a standing invitation to speak at NERP whenever he’s in Chicago.

NERP is not exclusively raspberry pi, the small computer interest group at Pumping Station:One in Chicago.

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org/

NERP meets at 7pm Oct. 21, 2013 at Pumping Station:One, 3519 N. Elston Ave. in Chicago.
Doors open at 6:30pm. NERP is free and open to the public.
Ed Bennett ed @ kinetics and electronics com
Tags: electronics, embedded, NERP, Open Source, raspberry pi, hackerspace, Beagle Bone, Element14

21

10 2013

A 3D Printed Pinhole Camera

It started simply. On October 3rd, I tabbed over to XChat and saw a highlight waiting for me:

<NegativeK> loans: http://www.thingiverse.com/thing:143882

Clicking the link took me to a Thingiverse page for a pinhole camera.

<loans> NegativeK: why am I not printing that right now

<NegativeK> Print that camera, loans, and I’ll share some dev kit and chemistry

So it started. Over the next week or so I spent some amount of time in front of the Lulzbot, coaxing the camera into existence. The prints all went fairly well, with no catastrophic issues. I had to print a body, a filmholder carrier, tripod mounts and shutter parts, and a ‘lens’ tube. I’d estimate it was less than 10 hours of printing, all told. I assembled the camera using with ABS slurry and fasteners, only needing to do a little bit of touch-up here and there to get everything fitted. I tested for light-tightness in a dark room with an LED flashlight. I made a pinhole out of some aluminum cut from a soda can. I took a stab at the ‘dimple and sand’ technique, though I think it’s something that will take some practice.

PINH5AD and shutter parts

The body/lens combo, shutter parts and tripod mount.

Shutter assembly

The completed shutter assembly.

Now I had a mostly-finished camera. The last ingredient was to be some adhesive-backed velvet, which would act as the gasket material. Someone (Everett), however, couldn’t wait. So on Sunday the 13th, we loaded up some film holders and cobbled something together in true hackerspace fashion.

2013-10-13 15.46.09 2013-10-13 15.46.06 2013-10-13 15.45.47

Don’t judge me. Then we carried the mess out into the alley, because we wanted to minimize exposure time. We set up to take a picture of our rollup door, because what else is out there?

2013-10-13 16.00.42

Metering was accomplished with a DSLR and a piece of scratch paper. This camera’s ‘lens’ is f/225 and the film was ISO400. We calculated a 12 second exposure time. We double checked everything, pulled the dark slide out, prepared a timer on a cell phone. Then we hit go and opened the shutter. Twelve long seconds went by, I was sure I was ruining the photo by shaking the camera  with the hand that was operating the shutter. Then the phone beeped, the shutter closed, and we were done.

Not being the sort to waste time, we quickly moved into the processing phase. I haven’t developed film since a high school photography class, but Everett was ready to go. It went down at the shop sink (In the newly cleared hot metals area), and soon enough we had our exposure. The negative looked good. Surprisingly good. Scanned with a DSLR, we had our photo:

10284447543_0874ba42f1_h

It isn’t perfect, but it’s a result. It’s even a reasonably well-exposed result, considering. The camera will benefit from a more precisely manufactured pinhole.

Our next goal is to try some exposures on positive paper, which is a process that gives you a print directly. The downside (maybe not?) is that it will be an hours-long exposure. We’ll see how it turns out.

 Until next time, hackers. -Derek

20

10 2013

CNC Build Club: Shapeoko 2 Demo

Shapeoko

 

At the next CNC Build Club, on Thursday 10/24/2013 at 7:00pm, we are going to have a demo of the, soon to be released, Shapeoko 2 CNC router.  The ShapeOko was designed by local inventor, and PS:One friend, Edward Ford.  The original version was extremely popular.  The new version adds many new features.

  • Larger work area.
  • Easier to expand
  • Open front and rear for feeding stock through
  • Dual motor Y axis is now standard
  • More ridged
  • Belts lay flat and are easier to install

Shapeoko

 

It will go on sale at Inventables very soon.  Inventables will also be giving away one milling bit starter kit at the meeting.  This a a kit of 5 solid carbide 1/8″ diameter bits.  It includes 2 spiral upcut bits, 2 straight flute bits and 1 ball end mill.  You must be registered on Meetup for this meeting and present to  be eligible for the bit kit.  The meeting is open to members and non-members.

Shapeoko

18

10 2013

NERP: Implementing MIL-STD-1553 with 3 Beagles

Tonight Trefor Delve will present a distributed simulation development making use of three Beagle Bone Blacks as part of the network. The simulation is used as a proof of concept for a general purpose, configurable simulation platform making using of public domain software.

Mil1553_timingMIL Standard 1553 bus timing [wikipedia]

The presentation will introduce the principles of the MIL Standard 1553 data bus, show a simulation with simulated hardware and demonstrate the same software running on distributed Beagle computers making use of the Beagle’s ADC, PWM and SPI interfaces.

The presentation will also demonstrate the use of the QT widget set to allow remote virtual hardware to interact with the Beagle simulation.

The presentation will demonstrate the setup of the ADC, PWM and SPI interfaces using the system capabilities.

NERP is not exclusively raspberry pi, the small computer interest group at Pumping Station:One in Chicago.

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org/

NERP meets at 7pm Oct., 7, 201313 at Pumping Station:One, 3519 N. Elston Ave. in Chicago.
Doors open at 6:30pm. NERP is free and open to the public.
Ed Bennett ed @ kinetics and electronics com
Tags: electronics, embedded, NERP, Open Source, raspberry pi, hackerspace, Beagle Bone, Element14

07

10 2013

Urban Sensor Hack (with MAKE and GE), Thursday 9.26

logo

As the the participating hackerspace for MAKE and GE’s Urban Sensor Hack! MAKE presents Maker Sessions, Urban Sensor Hack. But what is the Urban Sensor Hack?  It’s an event happening in real spaces and online. The USH includes talks from….

  • Alasdair Allan, Author of numerous books published by O’Reilly on sensors including “Distributed Network Data” with Kipp Bradford and “iOS Sensor Apps with Arduino.”
  • Ter0 & Kimmo Karvinem, Authors of the “Getting Started with Sensors.”
  • Patrick DiGiusto & Emily Gertz, Authors of “DIY Enviromental Monitoring with Arduino” and “Atmospheric Monitoring with Arduino.”
  • Tim Dye of Aircasting & Michael Heimbinder of Habitatmap.org
  • Rob Faludi, Author of “Building Wireless Sensor Networks”

But what is everyone talking about? The practical, real-world applications of continually developing sensors that enable microcontrollers to interact with our world. This series of events is free and open to the public. Whether you’re an experienced maker or trying to figure out what this whole culture is about – these are the events are for you!

Thursday night (9.26) will be led by Tero and Kimmo Karvinem, the authors of Getting Started with Sensors (http://www.amazon.com/Getting/dp/1449367089). The Google Hangout starts 5:30pm central and you can attend here https://plus.google.com/u/0/events/c3275tpg1f75iosr4mglem32nl8?authkey=CM7Mh-6D7oL47AE&cfem=1

 

Check out http://makezine.com/urban-sensor-hack/ for more details.

26

09 2013

NERP tonight — 5400 seconds of Fame!

It’s Open Mic Night at NERP! Bring your comments, suggestions, questions, works in progress, etc. to NERP (not exclusively Raspberry Pi), the small and embedded computer interest group at Pumping Station:One. Tell us what you’re working on, show a demo, or get feedback, or maybe even ideas!

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org/

NERP meets at 7pm 9-23-13 at Pumping Station:One, 3519 N. Elston Ave. in Chicago.

Doors open at 6:30pm. NERP is free and open to the public.
Ed Bennett ed @ kinetics and electronics com

Tags: electronics, embedded, NERP, Open Source, raspberry pi, hackerspace, Beagle Bone, Element14

 

23

09 2013

CNC Router Class and Training

KL4530T

 

This week at the CNC Build Club we are going to do a CNC router class, training and certification.  If you want to learn a lot about CNC routers come to the class.  We will start out with a little class room training that is open to all including non-members, then move to the shop where we will do hands on training and certifications.  This will be limited to 8 people and they must be PS:One members.  If you want to be one of those 8 people, please be one of the first 8 to RSVP the meeting at Meetup.com.

16

09 2013

NERP: Open Hardware Summit report and discussion

Tonight at NERP,  Drew and Ed will report on the highlights of the 2013 Open Hardware Summit, which was held last Friday on the campus of MIT. The importance of the OHS gathering is hard to exaggerate. At OHS, the business, philosophy, and technology of open source hardware are synthesized by leaders in there fields. It’s also a lot of fun, and there are posters and demos as well.

NERP is not exclusively raspberry pi, the small computer interest group at Pumping Station:One in Chicago.

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org/
NERP meets at 7pm 9-9-13 at Pumping Station:One, 3519 N. Elston Ave. in Chicago.
Doors open at 6:30pm. NERP is free and open to the public.
Ed Bennett ed @ kinetics and electronics com
Tags: electronics, embedded, NERP, Open Source, raspberry pi, hackerspace, Beagle Bone, Element14


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09

09 2013

Raising the BAR

New Bar Front ViewIt all began with a dream: a cerebral lubrication station worthy of our fine hackerspace, serving as focal point to transform the lounge from a seldom used area into PS:One’s central communal nexus. From there, a collaborative project was born. PS:One member Greg Daneau built the first incarnation of our bar. He built the bar top from an unfinished door, an open frame supported it, and it had a foot rail made of pipe. The result was impressive, even if it was but a small shadow of the glory that the bar ultimately became. Thus began an asynchronous collaborative project, with hacker inspiring hacker to hack the bar to higher pinnacles of zymurgical greatness. And it arguably served as an “altar” for the budding Beer Church.

Kegerator InteriorSeeing the bar in all its inebriating glory inspired member Ryan Pierce to build a draft system and kegerator from a donated refrigerator. It can hold up to six 5-gallon Cornelius kegs (used frequently by homebrewers) or a single 15.5-gallon beer keg. A fan forces cold air through an insulated hose carrying the beverage lines to the draft tower. The draft tower itself was built from PVC pipe, fittings, and drain flanges. An insulated return hose carries the air back to the refrigerator. This air loop keeps the beverage lines and taps cold, which reduces the tendency of beer to foam in the line. Jeremy used our TIG welder to weld a drain pipe to a stainless steel drip tray, directing any spills into a bucket.

The existence of the bar and draft system steered the focus of Beer Church towards kegging. Cornelius kegs can hold finished beer and can be used for natural carbonation (caused by additional secondary fermentation from priming sugar) or forced carbonation supplied directly from a CO2 tank.

Read the rest of this entry →

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04

09 2013