All posts by Lenore Edman

About Lenore Edman

Co-founder of Evil Mad Scientist Laboratories.

STEAM Fest 2015

I took a heap of pictures at the 2nd annual Silicon Valley STEAM Festival at the Reid Hillview Airport in San Jose today. This event brings out an eclectic mix of hobbyists, scientists, and enthusiasts showing off what they do. Below are a few of my favorite moments.

RC planes

The local RC aircraft enthusiasts not only displayed their aircraft, but also put on an airshow. They also fly at Baylands Park, and encouraged coming to see them on Sundays.

Huey

Vintage aircraft flew in to be displayed.

Leopard shark

Local science institutions brought their mobile displays, including leopard sharks from the Marine Science Institute.

Firebots outreach

Robotics teams, (including our very own Firebots) were demonstrating their robots in the midst of cars on display. You can find more robots, aircraft, automobiles and sharks in my album here.

GeekMom reviews Build-It-Yourself Science Laboratory

Sam over at GeekMom just posted a thoughtful and kind review, Bringing Science Home Again: ‘The Annotated Build-It-Yourself Science Laboratory’.

This is exactly what was needed. So much of home-based experimentation right now is focused on technology and making. While there is nothing wrong with that, traditional sciences are just as important. Labs are important. The Annotated Build-It-Yourself Science Laboratory brings the magic of science home again.

Lemon Plum Jam

plumjam-1

The plums on our tree ripened all at once this year! Making this sweet and tart Lemon Plum Jam took care of some of the excess fruit in a tasty way.

Ingredients:

  • 4 cups plum pieces (pits removed, skin still on)
  • 2 whole lemons—large meyers if you can get them—cut into pieces (seeds removed, peel still on)
  • Juice of 2 more lemons
  • 1/2 cup water
  • 4 cups sugar

Heat the plum and lemon pieces, lemon juice and water in a pot on medium, stirring occasionally. After about 15-20 minutes, the fruit should be softening. Macerate the fruit in the pot—a potato masher works well for this. Add the sugar. Stir regularly and cook to the desired consistency. To test consistency, put a spoonful on a plate in the fridge. If it’s too runny after cooling for a few minutes, keep simmering and test again after a few minutes.

Makes about 2-3 pints.

plumjam-2

If you want to can it for longer storage, Ball has a nice introduction to canning (pdf), and additional resources on their website.


Other fruit preserves from the Play with your food archives:

A visit from the LEGOJeep

Lego Jeep at Evil Mad Scientist
Photo by Kevin Mathieu

We had a visit from one of our favorite art cars, the LEGOJeep. Our friend Kevin stopped by to work on some parts to infuse even more LEGO spirit into the Jeep.

Lasering Parts for the Jeep
Photo by Kevin Mathieu

We also had a couple of young visitors stop by to see what we were up to. Above, learning to use the laser cutter and calipers.

Lego Jeep

Very proud of her contribution to the LEGOJeep!

 

 

Super Awesome Reporting on RoboGames

Super Awesome Sylvia has posted a video report from this year’s RoboGames. Highlights include a couple of combat matches, one of Sylvia’s LEGO competitions, WaterColorBot receiving a medal, and Sylvia completely geeking out after Grant Imahara interviewed her in the audience. (For extra fun, watch the raw footage of the interview from RoboGames.) Our STEAM shirt makes a cameo, too.

WaterColorBot and BeetleBlocks

The Tinkering Studio posted on twitter:

BeetleBlocks is a system for enabling people to explore algorithmic 3D geometry by snapping together Scratch-like programming blocks.

BeetleBlocks block programming example

They posted a picture of the finished painting, which looks awesome.

Painted output in the WaterColorBot

Computationally Fabulous Scarves

Our friend fbz just launched a kickstarter campaign to create algorithmically generated scarves, each one provably unique.

KnitYak scarves ship with the specific code and generating key used to make the pattern on your scarf. There is something powerful about knowing the mathematics and code behind the pattern you are wearing.

She’ll be getting an industrial knitting machine for her company KnitYak to automate the process of manufacturing these individualized creations.

algorithmically generated scarf design

Thoughts on community

I was invited to post over at Medium from my perspective as a woman maker and entrepreneur. I wrote a bit on Flourishing in the Maker Community.

As a woman, I am often called to tell what it it is like to be a woman in my field, or to provide advice on how to get young women interested in technology. I’d much rather share the amazing things people are doing with our products. I’d much rather help someone learning about electronics to get over a hurdle to the point they are successful with a project. And I’d much rather spend my time working on projects that in their own way, help young women and men to flourish and learn.

Retro-tech Style in the New York Times

Component Wine Charms

I’m excited to be included in an article on retro tech style in the New York Times today, titled Nintendo 64s and Vintage PlayStations as Home Décor.

Not surprisingly, these techie hobbyists share their passion in online communities. One of the more popular forums is a D.I.Y. tech blog run by Evil Mad Scientist Laboratories, a family company in Sunnyvale, Calif., that produces open-source hardware. The site features tutorials on making earrings out of linear regulator chips, wine charms from capacitors and a wooden footstool in the shape of a classic 555 integrated circuit chip from the ’70s.

A Diamagnetic Demonstration

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Our friends stopped by with a simple apparatus to demonstrate the diamagnetic properties of bismuth metal. Diamagnetism is a extremely weak magnetic effect — generally orders of magnitude weaker than everyday permanent magnets, which exhibit ferromagnetism. However it is also an extremely interesting effect because diamagnetic materials are repelled by magnetic fields. This is different than the case with ferromagnets, where one pole of a magnet repels another — rather, the entire material is (weakly) repelled by any magnetic pole.

Now, how might one observe such a weak effect? One way is to build a magnetic levitation rig, but the field configurations there are a little less obvious. With a simple but sensitive balance, we can see the repulsion directly. The balance above has a long wooden beam, a central pivot on two blocks of plastic, and a couple of coins on the far end for counterbalance.

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At the business end of the scale, there is a cylinder of bismuth metal about 1 cm in diameter, held in place by a rubber band. We also have a larger rectangular block, which is our test magnet, made of grade N50 NdFeB and painted black. And finally, the Lego Astronaut Twins are here helping out as a scale and position reference.

Moving the block magnet beneath the bismuth, we can see what happens in an animated GIF:
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After the balance settles, the resting position of the end with the bismuth is considerably higher. With some calibration in terms of weights and/or positions, one could even measure the exerted force with some precision.

A slight improvement to this apparatus would be to reverse the roles of the bismuth and the block magnet. That is, to affix the magnet to the arm of the balance, and to slide the bismuth beneath it instead. You could then use a nearby block of aluminum to damp the motion of the beam through magnetic (eddy current) damping. Many commercial balance-beam type scales already use magnetic damping so that they settle down to their final values faster.