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MMPIS (Part I)

MMPIS

See Also: MMPIS (Part II), MMPIS (Part III), and MMPIS (Part IV).

I typically write about a project after it’s done, but I thought I should turn that around and start writing about a project much closer to the start. So here’s Part 1 of the story of the MMPIS, the project more formally known as the Milwaukee Makerspace Pi-powered Information System, which is a kiosk at the makerspace which will provide members (and guests) with useful (and silly) information.

First, the name… We have a history of naming things with acronyms and/or using an many “M”s as possible, such as: HMMMMMM, M6 (Milwaukee Makerspace Morgifying Marble Manipulation Machine), M4 (Milwaukee Makerspace Maker Mobile), reMMinderbot, M2C2 (Milwaukee Makerspace Can Crusher), MMLC (Milwaukee Makerspace Lighting Controller), and of course, BADASS (Beer Automated Dispensing And Security System). I choose MMPIS because it’s fun to say. I nearly went with MMKIS (Milwaukee Makerspace Kiosk Information System) but unless I’m outvoted, I’ll probably stick with MMPIS.

I’ve long had an interest in digital signage and kiosks, so after my recent Sir Like-A-Lot project, I felt like pursuing a kiosk for the Makerspace. We had a Raspberry Pi that had been floating around waiting for a project, and there’s a huge TV that jason g. brought in that we used only occasionally. Those two pieces and a few other things were all it took. Well, that and writing some code.

The heavy lifting is all provided by Screenly, and actually, it’s the Open Source Edition of Screenly. (Also on GitHub.) Screenly is a pretty nice open source kiosk application. I’ve discovered a few bugs, and have some feature requests, but it definitely works. I’ve been meaning to check out Concert and Xibo as well, but I’ve not dug into those yet.

The first group of screens is pretty simple, here’s a few grabs.

Info Screen

Here’s the main screen (for now) which tells you where you are (duh!) and shows the date and time. It also tells you where to park, has a quote from the wiki, and shows the upcoming events. Well, some of them. We’ll get into that in Part II.)

Park!

We’re also showing our Parking App to let members know which side of the street to park on. (This, as every other screen, may change in the future.)

HMMDMMH

We’ve also got our How Many Members Does Milwaukee Makerspace Have? page. The HMMDMMH page uses our member management software to let us boast about this impressive number.

What's Cookin'?

Prepare Thyself for Making

The last two are just graphics that live on the Pi that runs Screenly. All the others are web pages out there on the big old Internet. Oh, I should note that the pages need to be fairly simple. Large, complex pages utilizing Javascript or other heavy lifting don’t do very well, due to the lightweight nature of the Raspberry Pi and the browser Screenly uses.

OK, that’s our intro to the MMPIS. In the next installment we’ll get into the events that the MMPIS shows, or should show.

Stay Tuned!

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Lazzor the Snowflakes!

Snowflake Designers

For the Holiday Make-A-Thon at Milwaukee Makerspace we came up with the idea of using Snowflake 2.0 so people could design their own snowflake ornament that we would then laser cut for them.

We had two computers running and instructed people how to use the app. We had to make sure people didn’t overlap the lines, as each line would be seen by the laser cutter as a place to cut, and people would end up with a pile of little wood pieces instead of a snowflake. We also found a bug where you could drag a node off the screen and then not be able to reach it to drag it back. Besides those little issues, the app was great, and lots of makers had interest in download it and playing with it.

Oh, Lance did all the laser cutting, and he was kind enough to add the person’s name, along with “Christmas 2013” to the back of each ornament, and a hole to hang them. Since it was a minimal amount of etching, and then just two vector cuts, things went pretty fast, which is good, because I think we made over 80 snowflakes!

Here’s a few of the designs people came up with during the event.

Snowflake

Snowflake

Snowflake

Snowflake

Snowflake

Snowflake

Snowflake

I’m tempted to dig into the code a bit and see if I can tweak things with Snowflake 2.0. Not surprising, but it’s been a year since I played around with snowflakes.

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Printing Plates v2.0

My last attempt at printmaking didn’t turn out as well as I had hoped it would, so I figured it was time to try again. And actually, the main reason I wanted to try again is because I saw the work of Jenie Gao at Milwaukee MakerFest, and after I took over her table so she could take a break, I asked her a few questions about printmaking, and the most important thing I learned is that I should seal the wood. With that small bit of advice, I was ready to try again…

Laser cutting the plate

Rather than do the same thing I did last time, I decided to start fresh. I once again used the laser cutter, but this time I didn’t want to use a raster etch, but instead opted for a vector cut to create the plate. (A raster etch works quite well of course, as Bret recently demonstrated, but they are time consuming, and tie up the laser for a long time. Vector cuts are much faster.)

Sanding the plate

Once I had my pieces cut from 3mm Baltic Birch, I used the piece of wood I cut them from as a guide to glue them down. After the glue dried I sanded it to make the surface nice and smooth. I’m not sure I needed to do this, but sanding always feels like the right thing to do in these situations.

Sealing the plate

I then coated the piece with polyurethane, sanded it down a bit, and repeated that process two more times. (I’m just doing what is recommended on the can. I don’t know if multiple coats are really needed, but it can’t hurt, right?) I let the whole thing dry for at least 24 hours.

Inking the plate

Ready to print! I inked up the plate and slapped down some paper, did a bit of rubbing, and I actually got a decent looking print! One thing I should do next time is create a larger backing piece, as it was hard to hold the plate in place while inking it, and I got a good amount of ink on my fingers and the table. (And yes, that is a mirror I am rolling the ink on. It’s from a 3D printing experiment long ago.)

MKE Print

The final print. There’s a few spots that could use more ink, but as I wasn’t doing a large run, I didn’t use a lot of ink. I also printed on crappy paper and it turned out good. (Supposedly the suggestion of using ‘Rives BFK’ can be ignored. Regular drawing paper can be used instead.)

Ultimately, my plan is to sort of merge the concept of printmaking with letterpress to make a weird combination of the two… but, you know, using a laser cutter and cheap Baltic Birch plywood.

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Anodizing things…

Bracelets

I took an Anodizing Aluminum Workshop at Milwaukee Makerspace last week, taught by “The Master”, Frankie Flood.

You can see the lovely(?) bracelets I made. OK, they were my first attempts at ever making bracelets, so I don’t know that I would call them “lovely” but I definitely learned a lot about working with metal and the anodizing and dying process.

Temporary Red Sign

Speaking of dying metal, I brought in my own piece of aluminum which I wanted to sandblast and we figured we’d give it the anodizing and dying treatment. It came out a beautiful red color, and yes, I mean beautiful! And then…

Metal Sign

I took the piece home to seal it, as it would not fit in the sealing bath we had at the space, and I tried to boil it, but… all the red came off! It may been because I used tap water, and/or because I didn’t get the water fully boiling before putting the piece in. There are a few reddish stains, but it’s definitely not red anymore.

Not a huge deal… While the sign did look great, it’s all a learning process. I’ll just make another one. That’s the beauty of making things. You learn how to do something, and it becomes a repeatable process, with the ability to refine and improve it each time.

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Milwaukee Makerspace Beer Stein

Glass

I’ve been using the sandblaster at Milwaukee Makerspace quite a bit lately, and I figured that I needed to push the limits of what is etchable by sticking vinyl on glass.

DRINK

I started with the word DRINK in Inkscape as text. I wanted something big and bold, so there would be a lot of etched area.

Paths

When exporting any text it’s a good idea to convert the text to art, or outlines. This changes it from editable text to vector artwork consisting of lines. Once this is done, you cannot edit the text anymore. Often I’ll save my original file with text, then make a duplicate I can convert to outlines.

Logo

I then grabbed one of the new logos Mike has been working on. There was some stitching lines inside of the shape, but testing indicated that the Silhouette did not cut it very well at the size I was using. (I should try various sizes, and perhaps a new blade.)

I exported both pieces of art as DXF files, like I usually do.

DXF Files

If I ever need to quickly check my DXF files I use Solidworks eDrawings. Typically I don’t need it, but it’s handy for troubleshooting.

Cutting

Once I have good DXF files I load those into the Silhouette Studio software for cutting, like I usually do.

After the vinyl is cut, I use transfer paper to attach the vinyl to the glass, and then mask off the rest of the glass to protect it in the sandblaster. (Oops! Photo not available!)

Sandblaster

Sandblaster… here we come!

Logo etched

The logo turned out well…

DRINK etched

…as did the “DRINK”.

Drinking Glass

A fine looking glass!

Etched logo

Close-up of the etch. Looks good!

Combining the vinyl cutter with the sandblaster can produce some great results! It’s a pretty simple process, really. I’ve had a few members ask me about this so I may end up doing a demo or a short class showing how it’s all done.

Disclaimer: You should never drink alcohol while operating power tools. Also worth noting is the only beer I really care for is root beer. I got this mug from the dollar store for… one dollar! I just wanted to see how it would look etched.