[Ben Krasnow] Hacks a Scanning Electron Microscope

ben-sem

[Ben Krasnow] is quite possibly the only hacker with a Scanning Electron Microscope (SEM) collection. He’s acquired a JEOL JSM-T200, which was hot stuff back in the early 1980’s. [Ben] got a great deal, too.  He only had to pay shipping from Sweden to his garage. The SEM was actually dropped during shipment, but thankfully the only damage was a loose CRT neck plug. The JSM-T200 joins [Ben's] homemade SEM, his DIY CT scanner, the perfect cookie machine, and a host of other projects in his lab.

The JSM-T200 is old tech; the primary way to store an image from this machine is through a screen-mounted Polaroid camera, much like an old oscilloscope. However, it still has a lot in common with current SEMs. In live video modes, an SEM can only collect one or two reflected electrons off a given section of a target. This creates a low contrast ghostly image we’ve come to associate with SEMs.

Attempting to fire more electrons at the target will de-focus the beam due to the electrons repelling each other. Trying to fire the electrons from higher voltages will just embed them into the target. Even SEMs with newer technology have to contend with these issues. Luckily, there is a way around them.

When “writing to photo”, the microscope switches to a slow scan mode, where the image is scanned over a period of a minute. This slower scan gives the microscope extra time to fire and collect more electrons – leading to a much better image. Using this mode, [Ben] discovered his microscope was capable of producing high-resolution digital images. It just needed a digital acquisition subsystem grafted on.

Click past the break to see how [Ben] modernized his microscope!

[Read more...]

Soundwave Tunes Up Your Portable Workbench

soundwave

[Tez_Gelmir] built an awesome portable workbench. Not satisfied with just mundane designs, he patterned his box after Soundwave from the classic Transformers: Generation 1 series. This portable bench keeps his tools organized and ready to roll out.

[Tez] has all the basic tool groups covered – screwdrivers small and large, pliers, crimpers, soldering iron, fume extractor, vice, and wire spool. He’s also got room for parts boxes to hold his components.

The basic box is built from a single sheet of 7mm plywood. The front work area is a smaller piece of 12mm plywood. Working with 7mm plywood did prove to be a challenge – [Tez] had to use some very small screws for his hinges.  The basic box construction was easy though – [Tez] used a pneumatic nailer and PVA (wood) glue.

[Tez] used a number of 3D printed parts in his design. He kept the Transformer theme going with a Decepticon logo built into his screwdriver holder. The fume extractor and lamp were also especially clever – [Tez] mounted them to drawer sliders, so they are there when he needs them, and out of the way when he doesn’t.

[Tez] spent quite a bit of time setting up his power system, and it shows. The inside of the box is framed with four power points. The main cord has its own “mouse door”, and everything tucks neatly away when not in use.

The Soundwave paint job is what sets this box apart – [Tez] spent quite a bit of time getting everything just right. It looks like Ravage is ready to spring out at any moment.

We really love this setup – Our only suggestion would be to add some sheet metal to protect the corners of the box while in transit.

[Read more...]

A Peach of a Homemade Parts Tumbler

tumbler[Chris] finds the average price of rock tumblers insulting. Almost as insulting, in fact, as prepackaged fruit salad made with Chinese peaches. While there may be little he can do about the peaches, he has given the finger to lapidary pricing by making his own tumbler on the very cheap.

Simply put, he drilled a hole in bottom of the peach vessel and then stuck a threaded rod through it. He held the rod in place with a nut and a washer. After securing the proper permits to source sand and water from his property, he put both in the jar along with some old nails that had paint and crud on them. [Chris] put the rod in the chuck of his drill and clamped the drill in his bench vise. Half an hour later, he had some nice, shiny nails. Make the jump to be amazed and entertained. If you prefer using balls, check out this homemade mill.

[Read more...]

THP Semifinalist: Retro Populator, A Pick And Place Retrofit For A 3D Printer

retro

A huge theme of The Hackaday Prize entries is making assembly of electronics projects easier. This has come in the form of soldering robots, and of course pick and place machines. One of the best we’ve seen is the Retro Populator, a project by [Eric], [Charles], [Adam], and [Rob], members of the Toronto Hacklab. It’s a machine that places electronic components on a PCB with the help of a 3D printer

The Retro Populator consists of two major parts: the toolhead consists of a needle and vacuum pump for picking up those tiny surface mount parts. This is attaches to a quick mount bolted right to the extruder of a 3D printer. The fixture board attaches to the bed of a 3D printer and includes tape rails, cam locks, and locking arms for holding parts and boards down firmly.

The current version of the Retro Populator, with its acrylic base and vacuum pen, is starting to work well. The future plans include tape feeders, a ‘position confirm’ ability, and eventually part rotation. It’s a very cool device, and the ability to produce a few dozen prototypes in an hour would be a boon for hackerspaces the world over.

You can check out a few videos of the Retro Populator below.


SpaceWrencherThe project featured in this post is a semifinalist in The Hackaday Prize. 

[Read more...]

Homemade Superhero: [James'] DIY Exoskeleton

 

Exoskeleton Lift

We’re not just a bunch of monkeys with typewriters here at Hackaday; we don our hacker hat whenever our schedules allow. Or, in the case of Hackaday’s own [James Hobson]—aka [The Hacksmith]—he dons this slick exoskeleton prototype instead,turning himself into a superhero. Inspired by the exoskeleton from the film Elysium, this project puts [James] one step closer to the greater goal of creating an Iron Man-style suit.

For now, though, the exoskeleton is impressive enough on its own. The build is a combination of custom-cut perforated steel tubing and pneumatic cylinders, attached to a back braces of sorts. In the demonstration video, [James] stares down 170 pounds of cinder block affixed to a barbell, and although he’s no lightweight, you can tell immediately from his reaction how much assistance the exoskeleton provides as [James] curls the makeshift weights over and over. And that’s only at half pressure. [James] thinks he could break the 300 pound mark of lifting if he didn’t break his legs first.

There’s plenty of behind-the-scenes footage of the build process to be had, so make sure you stick around after the jump for a sizable helping of videos, and check out [The Hacksmith's] website for more of his projects.

[Read more...]

Why Are We Limited to Just C-Clamps?

Alphabet Clamps

For decades, nay, centuries, we have been limited to the C-clamp, one of the most versatile, useful and perhaps most recognized tool. But why does C get all the glory? What of the other 25 letters?

People of my generation, my father’s generation, and my grandfather’s generations have clamped with one letter, and one letter only. But why C? And why now?

Here at Clamp-Co we thought we needed a change. So we set out to develop an entire line of Alphabet Clamps.

[Robb Godshaw] is the mastermind behind this revolution in clamping technology. Designed to German standards (DIN 1451), and made in America, the Alphabet Clamp set provides unrivaled clamping functionality for work in the industry, at the shop, or even at home. Perhaps the most functional previously unheard-of clamp is the U-Clamp, providing a deep throat for those extra hard to reach parts.

[Read more...]

PID Controlled Glue Gun

Internals of a glue gun controlled with a PID controller

Hot glue falls into the same category of duct tape and zip ties as a versatile material for fixing anything that needs to be stuck together. [Ed]‘s Bosch glue gun served him well, but after a couple of years the temperature regulation stopped working. Rather than buying a new one, he decided to rip it apart.

With the old temperature regulation circuit cooked, [Ed] looked around for something better on eBay. He came across a cheap PID temperature controller, and the Frankengluegun was born.

A thermocouple, affixed with some kapton tape and thermal paste, was used to measure the temperature of the barrel. Power for the glue gun was routed through the PID controller, which uses PWM to accurately controller the temperature. All the wiring could even be routed through the original cord grips for a clean build.

Quality glue guns with accurate temperature control are quite pricey. This solution can be added on to a glue gun for less than $30, and the final product looks just as good.

Follow

Get every new post delivered to your Inbox.

Join 94,037 other followers