Category Archives: Engineering

Introducing the Bantam Tools ArtFrame™

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The plotter adventure continues at Bantam Tools!

Bantam Tools ArtFrame™ Art Machines in two sizes

Bantam Tools proudly announces the launch of the new Bantam Tools ArtFrame™ Art Machine System—designed for professional artists to create physical art from digital designs with traditional materials.

Key Features:

  • Professional Results: Trusted by artists, galleries, and museums to create professional grade artwork. 
  • Quiet, High-Performance Operation: Custom-designed electronics and a magnetic, sound-dampening work surface let you focus on your next standout creation.
  • Two Size Options: Choose between the Bantam Tools ArtFrame 1824 (18×24” travel area) and the larger Bantam Tools ArtFrame 2436 (24×36” travel area).

The Bantam Tools ArtFrame prototypes created thousands of drawings at the Whitney Museum of American Art. Engineered and manufactured under leadership of the Evil Mad Scientist team in Peekskill, NY.

Learn more at bantamtools.com

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Hidden line removal for AxiDraw

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AxiDraw Control v3.9 screenshot, showing hidden-line removal feature

We’re pleased to note the release of AxiDraw software version 3.9 this week, with a couple of neat new features. One of them is that the “preview mode” button — which lets you simulate plotting to see how the results will come out — is now accessible no matter which function is selected. The other, the big one, is that AxiDraw now supports hidden-line removal as a standard feature.

There’s a full changelog up on GitHub, which also notes a few new features for users of the AxiDraw CLI (command-line interface) and AxiDraw Python library, including the ability to resume a plot a little before where it was paused.

But, let’s talk more about hidden-line removal.
Continue reading Hidden line removal for AxiDraw →

This entry was posted in Art, AxiDraw, EMSL Projects, Robotics, Software. Bookmark the Permalink.

Open Circuits: Now available

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Earlier this year, I wrote about my then-forthcoming book, Open Circuits: The Inner Beauty of Electronic Components, co-written with our regular collaborator Eric Schlaepfer.

Open Circuits is a coffee table book full of close-up and cross-section photographs of everyday electronic components. And, it’s now shipping! As of today, it’s available in hardcover from your local bookstore, as well as to purchase online and in electronic versions.

Open Circuits, hardback

We also just launched a new website for the book, with links of where you can purchase it as well as lengthy galleries of images from the book and of outake photos.

We put up a list of sellers on the website, including direct from No Starch and our own store, where signed copies are available.

This entry was posted in Art, Electronics, Engineering, Everything Else, Evil Mad Scientist Shop, Vintage Technology and tagged , , , . Bookmark the Permalink.

Flickery Halloween Fun

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Shane from Dark Illusion Studios shared this video using our candle flicker LEDs to make skull sconces. Our flickering LEDs are great for lots of different Halloween projects.

If you still need some inspiration, check out our Halloween Project Archives:

Halloween is one of our favorite holidays, and … we’ve organized dozens of our Halloween projects into categories: costumes, pumpkins, decor and food.

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Open Circuits

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I’m very pleased to announce my forthcoming new book, Open Circuits: The Inner Beauty of Electronic Components, co-written with Eric Schlaepfer.

Open Circuits is a coffee table book full of cross-section photographs of electronic components, along with photos of those components in context, and descriptions of how they work. It’s coming this fall from No Starch Press, and is available now to pre-order.

Book cover for Open Circuits

From the rear cover:

Open Circuits is a photographic exploration of the surprisingly beautiful design waiting to be discovered inside everyday electronic devices. Through painstakingly prepared cross-sections and stunningly vivid close-up images, the book reveals a hidden world full of elegance, subtle complexity, and wonder. From simple resistors and capacitors, to cutting-edge circuit boards and retro Nixie tubes, the authors’ arresting imagery transforms more than 130 electronic components into awe-inspiring works of art that will delight engineers, artists, designers, and photography enthusiasts alike.

My co-author Eric Schlaepfer has been our regular collaborator on projects such as the Three Fives and XL741 soldering kits, as well as the MOnSter 6502 and our Uncovering the Silicon project.

Open Circuits is coming this fall in hardcover, and is available now with a pre-order discount and early-access PDF from No Starch Press.

It’s also available to pre-order at your local bookstore — who we sincerely encourage you to support — as well as Amazon, Barnes & Noble, and other major booksellers.

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The AxiDraw MiniKit 2

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AxiDraw MiniKit 2

Today we are introducing a major refresh of the smallest member of the AxiDraw family of pen plotters: the new AxiDraw MiniKit 2. The AxiDraw MiniKit 2 is our special compact DIY-kit version of the AxiDraw lineup.

AxiDraw MiniKit 2

Versus the original AxiDraw MiniKit, the MiniKit 2 has been redesigned for easier assembly, better precision, and higher performance. The key change is that the long linear rail that forms the base of the machine — a custom aluminum extrusion in the original — has been replaced with a solid bar of 6061-T6 aluminum, machined in the same precision process as our top-of-the-line AxiDraw SE/A3, and then anodized to a satin-silver finish. This change simplifies a number of the assembly steps, but more importantly has a cleaner overall look and tighter manufacturing tolerances for improved precision.

AxiDraw MiniKit
In addition to be being “Mini”, the MiniKit 2 is also still a kit.

Unlike other models of the AxiDraw family like AxiDraw V3 and AxiDraw SE/A3 (which come assembled, tested, and ready to use), the AxiDraw MiniKit 2 is a machine that you assemble yourself.

We’ve taken great care in designing a kit that is rewarding to build, own, and use.

AxiDraw MiniKit

The new version is also heavier than the old one, which helps it to stay stable on your desk at higher speeds and gives it a small boost in effective speed, in addition to the upgrades in precision. Small but sturdy, The MiniKit 2 is built with machined parts, just one custom aluminum extrusion now, attention to detail, and care.

This entry was posted in AxiDraw, EMSL Projects, Evil Mad Scientist Shop, Robotics and tagged . Bookmark the Permalink.

An EggBot Brunch Party

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Eggs in basket
Photo by Raka Mitra

Heather Seeba wrote in to let us know about a gathering she has hosted around the EggBot.

EggBot set up for Brunch
EggBot set up for Brunch: Photo by Heather Seeba

The EggBot brunches have been big hits with my friends. Seeing the fascination and excitement showing new people my EggBot has to be my favorite part of playing with it. The inspiration came when I took the ‘bot to my (engineering) office so colleagues could make eggs for their kids: people were skeptical then couldn’t stay away. Thus for an EggBot brunch, invite awesome nerdy people over, feed them, and gather round the EggBot.

Heather told us about her events earlier this year, before the advent of physical distancing. Many of her suggestions can be adapted for family groups living together and we’ve added some suggestions for remote attendees as well.

Egg with flowers
Photo by Raka Mitra
Flower pots as backdrops
Photobooths for Eggs: photo by Heather Seeba

Some recommendations for an EggBot brunch include:

  • Print outs of suggested (speedy) designs will engage interest quickly.
  • For in-person attendees, buffet and easy lap food works better than a sit-down meal so the focus can be on the drawing.
  • For remote attendees, have a camera set up pointing at the EggBot so they can see their design being drawn.
  • Print some outline designs in advance and let folks color eggs if they like.
  • Make a photo shoot station for guests’ creations. Flower pots with herbs and blossoms are a great example.
Eggs in the herbs
Photo by Raka Mitra
Eggs in grass
Photo by Heather Seeba

The photo booths can be used even for eggs decorated without the EggBot!

This entry was posted in Art, Eggbot, Engineering. Bookmark the Permalink.

The 555SE and 741SE surface-mount soldering kits

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555SE and 741SE kits

Today we are pleased to announce the release of two new soldering kits: the 555SE discrete 555 timer and the 741SE discrete op-amp.

Both of these new kits are surface mount soldering kits — our first surface mount soldering kits — and we think that you’re going to love them.

555 kits, big and small

You might be familiar with our Three Fives discrete 555 timer and XL741 discrete op-amp kits. Both are easy soldering kits that let you build working transistor-scale replicas of the classic 555 timer chip and the famous µA741 op-amp. Those two are constructed with traditional through-hole soldering techniques and are styled to like “DIP” packaged (through-hole) integrated circuits.

Our new 555SE and 741SE kits implement the same circuits, now with surface mount components, and are styled to look like smaller “SOIC” packaged (surface mount) integrated circuits, complete with a heavy-gauge aluminum leadframe stand. Side by side with their through-hole siblings, the new kits are exactly to scale, with half the lead pitch and a lower profile.

555SE kit for scale

The 555SE and 741SE kits each come with eight (tiny) color-coded thumbscrew binding posts that you can use to hook up wires and other connections.

You can also probe anywhere that you like in these circuits — something that you generally can’t do with the integrated circuit versions.

741SE kit close up

The new 555SE and 741SE circuit boards are black in color, with a gold finish and clear solder mask so that you can see the wiring traces between individual components. There are a few other neat details here and there, such as countersunk holes for mounting the board to the leadframe.

The surface mount components are relatively large, with 1206-sized resistors and SOT-23 sized transistors, and assembly is straightforward with our clear and comprehensive instructions. These kits are designed to be a joy to build, whether you’re an old hand at surface mount soldering, want some practice before tackling a project, or are introducing someone to it for the first time.

Family portrait

And here is the new family: XL741, the Three Fives, along with the new 741SE and 555SE.

You can find the datasheets and assembly instructions for these kits, as well as links to additional documentation, on their respective product pages.

Both new kits are part of our ongoing collaboration with Eric Schlaepfer, who we have worked with on a number of dis-integrated circuit projects including the four kits here and the MOnSter 6502.

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