Three Fives in IEEE Spectrum

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Our Three Fives Kit was featured in this month’s IEEE Spectrum. From the article:

Just as DNA models, star maps, and periodic tables serve as reminders of fundamentals that can get obscured by day-to-day minutiae, so too the Three Fives kit is a reminder that even the most complex digital processor is still at its heart just a collection of very simple components.

You can read the full article and see pictures of it in use in a sample circuit over at IEEE Spectrum.

Pi Day is Here

Or, if you prefer, we’re halfway (well, 44% of the way) to Tau day, 6/28.  A fine day to watch the Vi Hart‘s Anti-Pi Rant. And, a fine day to round up some of our finest Pi, Pie, and mathematics projects:

Pi Blanket   Apple Pie

Pi blanket for Pi Day, and the Apple Apple Pie!

 

Earrings 2   Sierpinski Cookies-11

Sierpinski triangles out of polymer clay, and fractal cookies.

Fractal Snowflake Cupcakes - 24 fabric klein bottle

Fractal snowflake cupcakes, Fabric Klein bottle

Snowflake generator SymmetriSketch 2
Vector Snowflake generator application, and Symmetrisketch– for exploring other symmetries.

Christmas fractalSconic Sections
Christmas Chaos and Sconic Sections

Basics: AVR Target Boards and Arduino Compatibility

Diavolino
Gary writes:

I have fallen in love with your Diavolinos – thank you!
My question: does the “Simple target board” allow for the 6-pin FTDI Friend hookup to upload sketches? This is quick and easy with the Diavolino. I’m new to reading circuits and stuff, and I cannot tell looking at the target board. It says to use in-system programmer, but I prefer to not buy another interface. Thanks!

Excellent question! It is certainly possible, but not as quick and easy.  Both the Diavolino and our ATmegaXX8 target boards boards use the same chip, usually the ATmega328P.  But, one might say that our ATmegaXX8 board is a simple AVR target board optimized for use with an AVR ISP programmer (like the USBtinyISP), whereas the Diavolino is a simple target board optimized for use with the FTDI interface.

XX8 Target Board

Versus a “bare” target board (with just the chip and power), there are four things that you would normally add, in order to use the FTDI interface to upload a sketch from within the Arduino environment:

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Evil Mad Scientist Linkdump: March 2014

Back from the dead: The Evil Mad Scientist Linkdump. Last seen circa 2010, the Linkdump is our occasional collection of interesting links. You can find our archived linkdumps here.

Cool Wearable Electronics

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Mascot costumes are often hot and sweaty, and mascots are expected to enthusiastically energize their teams. At FIRST robotics competitions, there are also traditions of dance parties during delays caused by technical difficulties, leading to even more activity in a warm, heavy costume than would normally be expected.

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Cardinalbotics, an FRC team from San Francisco, made a mascot costume using an application of wearable electronics I had not considered before: cooling fans. The cardinal head was made of fabric sewn over shaped foam, with fans on the sides to keep everything cool inside.

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The fans were wired up to an on/off switch and adjustment pot which were hidden in a velcro compartment in the back of the head.

From the Mailbag: on STEAM Education

Evil Mad Scientist STEAM T-shirt
Trevor wrote in:

I’ve probably said it a million times, but I don’t think I’ve told you guys. You’re amazing. When it’s time for a new project I jump over to EMSL first. I use your projects to demonstrate a lot of STEAM principles at my Makerspace, and proudly wear my EMSL STEAM shirt every Saturday morning when I’m teaching our Makerspace Cadets class. (It’s a fun sciencey/makey/artsy class for kids). Keep up the great work. :)

Thank you for the kind words, and for your dedication to your students!

Robots in the Central Valley

Rows of busy pits

Friday was a busy day in the pits at the Central Valley Regional FIRST Robotics Competition. The teams got their robots unpacked, inspected, and ran practice rounds prior to matches this weekend. We’re here with Fremont Robotics, and we’ll be taking pictures throughout the weekend and posting them (tagged by team number where identifiable) in this flickr set.

On the field

The challenge this year is fun to watch: the robots score goals with large exercise balls and earn extra points for passing to team members and throwing the ball over a beam. The event is free to attend and open to the public, so if you’re near Madera, California this weekend, we’d love to see you here!