Interlock is a non-profit organization that provides space for its members and the local community to develop and share their interests in science, technology, art, and culture.

3D Digitized Humans

We’ve been tinkering lately with taking pictures for the Open Crowd Project, an effort to create a 3D printed crowd of humanoids. It really doesn’t take much effort, nor much equipment. You just submit a series of photos of your model (photo guidelines), upload them to the project, and sit back while fancy software (mostly 123D Catch) and diligent humans painstakingly render your likeness in bits and bytes and plastic blobs.

The model shown here isn’t their best work, as we provided sub-par imagery for our first attempt. We’re submitting some better shots now, so we’ll see if our process has improved enough to give some higher resolution models. Once we’re good to go and have this process down, you should feel free to stop in sometime and get yourself digitized!

from on October 3rd, 2012Comments0 Comments

Hacks/Hackers Rochester

A few Wednesdays ago, after a long and cozy day of working from home, I decided to break my “never leave the house or have meaningful human contact” rule, and I ventured out to the snowy tundra of Henrietta. The threshold for this odd behavior is quite high, but I just couldn’t bring myself to miss the first meeting of Hacks/Hackers Rochester, a local group aiming to mush together journalists, programmers, technologists, designers, and what-have-you, just to see what kind of nutty/useful stuff results.

Hacks & Hackers Rochester

Before I get too far, I’ll have you know that their next meeting is Wednesday, February 15th (at RIT’s Center for Student Innovation), and you can get at them on their meetup group, or their twittery bits. If combining technology and journalism sounds fun to you, you should stop by, because it seemed like a bunch of smart and interesting people.

Ok. For the rest of our time together, I’m fixin’ to dump a few links on you. I am not a journalist, nor a programmer, but I have been quite interested in this area for some time, and hope to contribute – at the very least – as a well-informed cheerleader, brainstormer, facilitator, or village idiot. We’ll see. Either way, maybe I can give interested parties some ideas of what’s possible/probable before the next meeting.

Open Sesame

“Open” excites me. Open source software, open hardware designs, open data, “free culture” in general. Fun things happen when information is free and accessible. Maybe this first dawned on me when I saw the Oakland Crimespotting site. By now, everybody has seen a multitude of visualizations made by dumping data on top of Google Maps. Back then it was pretty new and exciting. What struck me most, at the time, was that the Oakland PD was publishing this data to a public website, and in a format that was fairly easily scrape-able and parse-able. Wow! Amazingly pedestrian, really, but for a city or county government it seemed unthinkable (and still does, apparently).

Many municipalities are doing a decent job in this area nowadays. Some have even progressed enough that sites like EveryBlock have sprung up, taking these public data feeds and massaging them into a format that mere mortals can make sense of. Baltimore has an open data website that looks like it has lots of useful info, in easy to digest formats. Chicago too. I’m sure there are many others… those were just the first two to pop up when I poked around for “data dot blah blah dot gov” sites. There is no site, unfortunately. How do we make that happen?

Dumpy Data

In the meantime, we rely on FOIA requests for information from local governments. Often times, these arrive in the least convenient format possible, and they are likely full of sloppy and inconsistent data. We’re pretty lucky then, that after cleaning things up, the D&C often shares this data with us on their RocDocs site.

I wonder if they know about Google Refine? Refine is “a power tool for working with messy data, cleaning it up, transforming it from one format into another, extending it with web services, and linking it to databases like Freebase.” If you’re dealing with cruddy data of any sort, you should check it out. It’s a bit of a weird install, running as a web server on your computer. Ask your local nerds if you’re having trouble… it’s worth it.

Community Data

Even if you can get it in a decent format, governments don’t always have the data you need. Or if they do, it might be stale by the time you can get at it. There are some fun things happening in the world of open data acquisition. Let’s call it “open mapping”, although I’m sure there are non-location-based projects I’m overlooking.

First, Google is changing the terms of service on their Maps product… taking it out of “beta” status and reaching into your wallet for some payback. If you have a certain amount of map views per day, it’s no longer free to use. Thankfully, all along, a large community of folks have been creating their own street maps by compiling open government data (TIGER files in the US), or by walking, biking, and driving routes with a GPS logger and uploading their tracks. OpenStreetMap is the result, and it’s an amazing feat. Anybody can edit the map… so feel free to liken it to the “Wikipedia of maps”, even though that probably makes some people bristle. Not coincidentally, the resultant data is available under a farily open license, and has thus been mixed and remixed into a plenitude of other projects, products, and experiments.

OpenCycleMap builds upon OpenStreetMap, and highlights cycling routes. It is rather sparse in the US. I recently attended some public meetings on Rochester’s bicycle plan, featuring some large maps of city streets rated “A” through “F” for bike safety. Perhaps that belongs on such a map, editable by all those who actually ride the city streets and know that traffic volume and speed are not the only relevant dimensions for such a grade.

OpenHeatMap lets you upload a spreadsheet of data and crank out a heat map on top of OpenStreetMap. Mapbox is a bit more sophisticated, but costs some money for hosted maps. No matter… the Mapbox developers have released TileMill, a gorgeous application that lets you handcraft interactive maps yourself. It requires a bit more knowhow, but I’m sure Hacks/Hackers has plenty of that.

The folks at Safecast wanted to map radiation levels following the Fukushima disaster in Japan, so they cobbled together some GPS loggers and Geiger counters. After driving around the country, they plopped the data on top of the OpenStreetMap. This isn’t child’s play yet, but every day it’s getting easier to bring together the hardware and software needed to record data and make it easily available.

A Brief Aside

These radiation mappers weren’t “traditional journalists”. Maybe it wasn’t even journalism or news. Whatever. It was really important info, and I’ll bet no reporter thought “I’ll just go out and record that data, instead of waiting by the phone for an official report”. I hope, after hanging out at Hacks/Hackers, that mindset will change.

Semi-related: Rochester has a nuclear power plant nearby, and Interlock has a Geiger counter:

Geiger Counter

(not a terribly well calibrated Geiger counter, admittedly)

For some more thoughts on the future of local news and journalism, from people much smarter and more cogent than I, I will simply link without comment to some posts I’ve bookmarked from Ryan Sholin, Jeff Croft, and Tim Porter.

Burbling Infobrooks

If real-time info is needed, Pachube is a free clearinghouse for data feeds. It’s ridiculously easy to upload sensor data to the site, whether it be temperature, weather, energy use, and so on. Equally important, it’s also easy to retrieve that information as a regularly updated and well-documented stream. Would you like to browse the 2700 available feeds tagged “radiation” on Pachube? Probably not. But it’d be a relatively simple task to create a program that retrieves and maps them in an easy to digest format.

Some folks – mainly in New York City – weren’t quite satisfied with the current status quo of air quality monitoring. So they’re building their own sensor network using open platforms to measure and make the data available to anybody that wants it, in real time. This stuff isn’t too technically challenging nowadays. We just need to pair up those with a need for info with the people who know how to get this stuff done.

Too Long; Still Reading

There’s plenty more fun stuff happening in this area, but that’s enough to keep you occupied for a few hours a least. If – after you close all your browser tabs – you still find your cravings unfulfilled, do join us at the next meeting, or fire away in the comments here. I’m sure we’ll be able to fill up or otherwise utilize your vast cranial resources. See you there!

from on February 2nd, 2012Comments2 Comments

BarCamp Plot-chester

Interlock's BarCamp Table

As is usually the case, Interlock managed to cajole/bribe the organizers of BarCamp Rochester into giving us a table in the atrium, upon which we could set up our wares and lure in unsuspecting geeks. The conference itself was really great, with lots of interesting talks, and lots of attendees and traffic by our table. Everybody seemed quite excited about the “Skeletonizing Carcasses with Flesh-eating Beetles” talk, myself included.

In the past, we’ve had a slight lack of table-sized projects that moved, made noise, or otherwise stimulated people to come talk to us and see what Interlock is all about… but no longer!

After becoming a little obsessed with old pen plotters over the past few months, I decided I’d like to try assembling my own drawing robot. The main goal, again, was to have something small, cool, and interactive to attract folks at events where we have a table or booth. So about a month ago, our journey started with destruction… one printer and one printer/scanner gave their slightly non-functional lives to this project. Anything slightly cool was saved, and of course the precision rods, stepper motors, and timing belts were the main goal. I wanted this to use pin-feed card stock, so an old dot-matrix printer was also sacrificed.

I was without camera for most of the month, so documentation is non-existent. Regardless, the documentation would have been something like this: “!@#$!@#$ MORE EPOXY! !@#%!#$”, along with pictures of me looking frustrated. Let’s just say, this machine is a hack, on top of a kludge, wrapped in a cob-job. We ended up with the paper-feed mechanism from the dot-matrix printer acting as the Y axis, and a small solenoid from adafruit riding along on the X axis with a wobbly pen-holder (and some tape (and epoxy!)). This was all hooked up to a rickety breadboard (I designed and ordered an Arduino shield via Batch PCB, but it didn’t arrive in time) with two Polulu stepper drivers, an Arduino, and a simple transistor doohicky for toggling the solenoid. We ran grbl on the Arduino, and after tracking down a bug in said code and reflashing the firmware, we were well on our way. I learned a lot, stressed a bit, and the morning of BarCamp we barely managed this:

But it got better throughout the day, with some live on-the-scene hacking. I managed to get a toolchain set up to get webcam input traced and plotted thusly:


That toolchain starts with OpenCV handling the webcam, and doing a “trace outlines” sort of procedure. From there, a PNG is saved, converted to vectors by autotrace, converted from eps to hpgl (the language of old-timey plotters) by pstoedit, slurped back into Python via the Chiplotle HPGL library, where I have a few routines scale and optimize the tool path, and then we output some ugly gcode and stream it to the Arduino. Phew.

It’s a bit roundabout. But it worked, and it made people smile and wander over to talk to us… and they got some cool robo-portraits out of it. I’ll leave you with another image and video of the bot doing its thing. A few more can be found in my flickr gallery.


from on October 30th, 2011Comments3 Comments