posts tagged with the keyword ‘drawbot’

2014.10.20

Friday Night Drawbot v1

There haven’t been a lot of updates to my Friday Night Drawbot project lately, but things are picking up again.

Pictured above is version 1, which was built back in 2011, on a Friday night, in my basement. It drew circles. (And that’s it.)

Friday Night Drawbot v3

The programming got much better, and I ended up rebuilding the chassis a few times. This is what I like to call “version 3″ of the Friday Night Drawbot, and is still in use today.

FND

Let’s call this version 3.5. We’ve shed the old corrugated plastic in favor of a replacement designed digitally, and created with laser-cut wood.

The front plate that holds the pen can now easily slide forward and back, and is held in place by a pair of screws and wing nuts.

FND Drawing

I started the redesign process by taking apart the drawbot and measuring things with the calipers. I then used Inkscape to create (on multiple layers) the parts needed, which consists of the main plate, bottom plate, and pen extender plate.

FND Laser Cut

Here are the pieces separated out and ready to be laser-cut, or, cut in some fashion, I should say…

Old Plastic Body

I tore apart the old chassis which was hot glued to the servo motors, and held together with rubber bands. I had to heat things up to release the glue, so it’s a bit destroyed. No loss!

FND Paper Prototype

This is a paper prototype I created with the Silhouette Cameo, which does a fine job of cutting thick paper. I often prototype cutting things with the Silhouette because, well, it’s in my basement, so I always have access to it (unlike a laser cutter.) I could easily print on paper as well, but I find that with the cutter close by and easy to use, I use it a lot. It helps to have physical things cut and in front of you sometimes.

FND Bottom

Here’s the bottom view of the laser-cut version. There’s a lot of 8/32″ hardware holding things together, mainly because SAE is cheaper than Metric around these parts. (Drat!)

You can see that the two wing nuts hold the pen extender plate in place, so it’s easy to loosen the nuts and slide things around. (The slot could probably be a little narrower next time.)

There’s also some regular nuts holding the bottom plate to the main plate to hold the servos in place. The 3mm Baltic Birch flexes a bit though, and may not be the best solution.

Pen Holder (Bottom)

There’s a captive t-nut to hold the pen in place. It’s a good idea, but poorly executed here.

Pen Holder (Bottom)

The screw does hold the pen, but again, the 3mm wood is a little thin for this to work well. It’s also difficult to tighten and loosen the screw without a screwdriver. I really need a screw that allows you to use your fingers, like the one on the Egg-Bot. I’ll probably make a 3D printed screw-thingy for this.

Detour! I often wonder/worry about mixing laser-cut stuff with 3D printed stuff, and I’m not sure why. Maybe it’s due to the recent kit design work I’ve been doing where we try to make everything laser cut, mainly due to speed and efficiency of production. In this case though, I’d see the 3D printed screw-thingy as an “enhanced” piece, so it should be totally fine. Or I could, you know, use a wing nut. (End Detour!)

Pen Holder (Side)

As mentioned, I find the 3mm wood a bit thin. This whole design is really just 2 dimensional, or maybe 2.5 dimensional if you want to stretch things a bit. I want to have the next iteration be much more 3 dimensional. I may stay with laser-cut wood for most of it, but there is a lot to explore in the design for assembly aspect of things.

FND

I may play more with this version, introducing minor improvements, or just move on to the next revision, which will be much more box-like, and move away from the flat plates.

Since I like to build things really fast, it’s hard to know what will happen next.

2012.04.22

Arc-O-Matic

Once again Gallery Night was a blast… This time myself and the Milwaukee Makerspace guys joined forces with Bucketworks and showed the art-lovers of Milwaukee what we do. (Make things!)

Since both Drawbots were busy at the Art Milwaukee Wedding event, I needed something new to show. (And yes, I did say “both” because there are now two rolling drawbots.)

Anyway, I saw this blog post over a year ago, and made a mental note to explore the idea more, and I did, and the result is the Arc-O-Matic: a robotic drawing arm that makes arcs. Well, that’s basically what it does at this point. See the Arc-O-Matic project page for all the details.

People seem to really like seeing machines that draw, which means I’ll probably keep on exploring the world of art robots.

File Under: FUN.

(Also, if anyone knows who I can talk to at Sharpie about a sponsorship, I’d appreciate it!)

2012.04.04

DamCamp

DamCamp (aka BarCamp Beaver Dam) happened on Saturday, March 24th, 2012 and this is my review…

First off, I will shout out a big thanks to Jason Gullickson, his wife, Wayland Academy, the Beaver Dam Makerspace Project, and anyone else who helped organize the event and made it happen.

Wayland

The Venue
DamCamp was held at Wayland Academy, which is a coeducational college preparatory boarding and day school in Beaver Dam. The main room was an auditorium, which was full of seats, a stage, large screen, and projector. There were two other rooms we were going to use, but we really ended up just using one other room, the lab, where the 3D printers were set up. The venue was easy to get to, and there was plenty of free parking! :)

The People
This was the smallest BarCamp I had ever been to… and that isn’t a bad thing. I remember times in BarCampMilwaukee history when some people were very focused on the numbers, and personally, I prefer quality over quantity. If the right people are there, that’s better than more people being there.

I saw people I knew who I haven’t seen in a while, met some new people, and met people IRL that I’d only met online before. What more could you ask for?

Time Lapse Bot 3

My Junk
If you’ve been to a BarCamp with me, you know I tend to bring a lot of stuff. I’ve been known to bring a photo booth, cameras, tripods, audio recording gear, tables, 200 feet of extension cords, power strips, and on and on. This time I brought Time Lapse Bot, the Egg-Bot, Friday Night Drawbot, my still camera, and not much else. It only took me about 3 trips to load in! (And I found it quite refreshing.)

Friday Night Drawbot

The Sessions
After the opening and introductions we launched into the first session… which happened to be my session. I gave a quick talk about some art robots that I like, and my take on what an art robot is (and isn’t) and then did a demo of the Friday Night Drawbot and the Egg-Bot. (Slides are here.)

I did not keep track of all the sessions, but we did one on 3D printing (there were 3 RepRaps there) and one on creating hackerspaces/makerspaces, and one on making noise with electronics. I ended up getting a lot of good info from the 3D printing session, and I’m a bit more motivated to find the time to finish my RepRap build. (Less sleep is the obvious answer!)

In conclusion, I had a good time, and I learned things. It was a small event, but I don’t think that detracted from it at all. In fact, I wouldn’t mind seeing more smaller events. BarCampMilwaukee is big, and it’s awesome, but it’s also a lot of work, involving a lot of people. Perhaps both ends of the spectrum can co-exist.

If you haven’t been to a BarCamp event yet… why not!? Maybe you’re more into food than technology. Well, you should consider attending Madison Food Camp which is coming up April 7th, 2012! (Yes, I said “Food” not “FOO”, just to be clear.)

2012.03.18

Make Zine Egg

DamCamp is coming up on Saturday, March 24th, 2012 in Beaver Dam, Wisconsin… and I’ll be there talking about Art Robots, machines that draw, and other various nerdy things.

So besides the Egg-Bot, I’ll also have the Friday Night Drawbot there, and talk about a number of other art robots I’ve seen, and would like to someday build.

There’s been so much intersection between art and technology lately (at least in the groups I’m involved with) that I’m really hoping for a lively discussion. Of course we’ll also have a fun demo too.

Since the event is being put on by Beaver Dam’s fledgling makerspace project, I thought printing a Make Magazine egg would be a good introduction to the magazine and blog for those who might not be familiar with it yet… :)

2012.03.04

Friday Night Drawbot

Our own little Friday Night Drawbot got invited to City Hall!

(OK, well, that’s not exactly what happened, but that’s how I plan to tell the story…)

Milwaukee Makerspace took part in the first Art Jamboree held recently by the fine folks at Art Milwaukee, and while I couldn’t attend, the spunky little Friday Night Drawbot was able to make it, and he did his best to wow the crowd with his take on robotic art.

So here’s the deal… join us Friday, March 9th, 2012 at Milwaukee’s City Hall for the Art Jamboree, and if you’re lucky, you’ll walk away with art created by a Sharpie-wielding robot.

I’ll be there this time, and I hooe to see you there as well.

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