About Windell

Co-founder of Evil Mad Scientist Laboratories.

Highlights of the 2014 Bay Area Maker Faire

BAMF 2014 77

The 2014 Bay Area Maker Faire was an amazing, amazing event. We took hundreds of photos, which we have posted in a flickr set here. Here are just a few of the highlights— both technological and artistic, and we’ll be featuring several more over the course of the next week or so.

(Above: Rolf and Abhishek show off the new Arduino Zero in the Arduino booth.) Continue reading

OSHWA on Creative Commons and Open Source

CC licenses
Over at OSHWA.org (of which I am a board member), there’s a blog post about different Creative Commons license choices, and their implications for open source projects:

The reason is that there is not a single entity called the “Creative Commons license.” Rather, Creative Commons offers a number of different licenses that can apply some rights and protections to your work, including the CC-BY and CC-BY-SA licenses which reflect open source values closely. [...]

Creative Commons also offers licenses that carry restrictions — against commercial use and/or derivative works — that are strictly incompatible with open source. The open source hardware definition states that a license for open source hardware “[...] shall allow for the manufacture, sale, distribution, and use of products created from the design files, the design files themselves, and derivatives thereof.” Thus, if you choose to release hardware under the banner of “open source,” that means that you agree to allow others to use your design commercially, as well as to create derivative works (and to use them commercially). Consequently, you cannot advertise your project or product as “open source” if it carries restrictions against either of those uses.

Image CC-BY creativecommons.org.

A WaterColorBot Water Clock

watercolorclock_1

We built a evaporating-hand water clock using a WaterColorBot fitted with a Buddha Board. The Buddha Board is a black board with a gray ceramic coating that becomes transparent when wet, so you can paint on it with plain water to make black marks that disappear as the water evaporates.  (And, it fits nicely in a WaterColorBot with the appropriate jig.)

watercolorclock_2watercolorclock_3

As a clock, once a minute it draws the minute hand, then the hour hand, and finally the outline of the clock face.

watercolorclock_4

As the water evaporates over the course of a few minutes, the old minute hands fade away. It’s a neat effect.

And of course, video:

Continue reading

555 kit, version 2.0

555 Kit v 2.0

Today we’re introducing version 2.0 of our “Three Fives” Discrete 555 timer kit.  Version 2.0 has a number of little tweaks and improvements, with a cleaner design and — coolest of all — an all-new set of smooth anodized aluminum legs.

555 Kit v 2.0

The Three Fives kit is a faithful and functional transistor-scale replica of the famous 555 timer integrated circuit — one of the most popular and well-loved chips of all time. (An original NE555 IC is shown above for scale.)

We are also releasing the first version of our educational supplement for the Three Fives kit: A detailed description of how the 555 circuit actually works, with plenty of opportunities for further exploration.  You can find it on the downloads section of the product page or on our documentation wiki.

 

 

Open Hardware Summit 2014: Call for papers

OHS
The Call for Papers is now open for the 2014 Open Hardware Summit. This year’s summit will be September 30 and October 1 in Rome, Italy.

The Open Hardware Summit is the annual conference organized by the Open Source Hardware Association and the world’s first comprehensive conference on open hardware; a venue to discuss and draw attention to the rapidly growing Open Source Hardware movement. Speakers include world renowned leaders from industry, academia, and the maker community. Talks cover a wide range of subjects from electronics and mechanics to related fields such as digital fabrication, fashion technology, self-quantification devices, and DIY bio. Workshops focus on, but are not limited to, education, manufacturing, design, business, and law.

The call is on a short schedule this year: Submissions are due by 25th of May 2014.

The Printr Egg Boogie Board Bot

Printer Egg Boogie Board Bot

Over at Thingiverse, user gkrangan posted this wacky contraption: A machine to write with a stylus on a Boogie Board e-writer, built from PrintrBot Simple frame components, along with EggBot electronics and the pen-holder.  It’s driven through the EggBot extensions for Inkscape.

I was initially taping an index card onto the print platform for testing purposes, but when I saw this Boogie Board at a toy store, it seemed like a perfect choice to be used as the writing surface. One can draw/write anything on it, and erase with a press of a button. Of course, it can still be removed and any other suitable surface can be taped or mounted on the print platform, as necessary.

Printer Egg Boogie Board Bot @ Thingiverse

OSHW Talk at 2014 Bay Area Maker Faire

Maker Faire 2014
Wearing my OSHWA hat, I’ll be giving a talk about Open Source Hardware at this year’s Bay Area Maker Faire:

Best Practices for Open Source Hardware in 2014
In the past year OSHWA, the Open Source Hardware Association, has worked with the community to develop a modern list of best practices for designing, releasing and building upon existing open source hardware projects. Windell Oskay, Vice President of OSHWA, will discuss recommended approaches, touching upon open source design tools, documentation, hosting, licenses, and other current issues. Time permitting, we will also take questions from the audience.

The talk is scheduled for Saturday, May 17, 4:45-5:00 pm. You can find the rest of the center stage schedule for Maker Faire right here.

Linkdump: April 2014

The Decoregger

Decoregger 1

Hey look! It’s the fossilized remains of a possible evolutionary ancestor of the EggBot!

Decoregger 2

Okay, it’s pre-USB but technically it’s not a fossil. Like many of us, the decoregger dates from the mid-1970′s. It’s a simple function gadget that mounts an egg so that you can spin it, with arm second arm that holds tiny felt-tip pens.  Curiously, there are also some contemporary machines bearing the same name that lack the separate arm.

 

Decoregger 3 Decoregger 4
Decoregger 5 Decoregger 6

In the upper-left photo, you can see that the pen holder has a separate “paddle” that you hold, to manually move the pen in the arc across the egg surface.  Lacking the proper felt-tip pens, we found that a uni-ball micro pen was about the right diameter to fit in the holder.

One surprising thing: To model this thing, we used regular “large AA” (not extra large, and not jumbo) size eggs from the grocery store. And it was only barely possible to squeeze the egg into the holders. From the picture on the box, it looks like there’s plenty of room for even the largest egg.  Possible explanation #1: Plastic shrinks over time. Possible explanation #2: The egg pictured on the box is from the advertising land of freaky micro-children.

But in any case, the decoregger is a cute little machine, and it looks like it might be fun to play with.  The actual play is a matter of turning knob 1 and knob 2, so it feels a lot like an Etch-a-Sketch in spherical coordinates. Now if only there were some way to strap a couple of motors to it and perform a CNC conversion….

Decoregger 8

Speaking of which, it really is a lot smaller than the EggBot.  Heck, you could probably fit the whole thing inside the EggBot.

Decoregger 7

Wait — am I doing this right?

Special thanks to Michelle Hlubinka for finding this artifact and sending it to us!

Simple Relay Shield v 2.0

relay shield

A minor bump for one of our little open source Arduino add-ons. The Simple Relay Shield is an easy to use single-relay board that does one thing, and does it well: It adds a beefy little mechanical relay to an Arduino, which you control through pin Digital 4.

relay shield

Version 2.0 adds the ability — by popular request — to control it from a pin other than D4. Solder the jumper in the normal way (in location JP), and it works on pin D4. Hook it up to any other digital pin, say to D7, and now you have a relay on that pin. The Simple Relay Shield is available as a complete soldering kit or as a bare PCB, and you can find documentation on our wiki.