Speedier DrawBot Drawings

When using my DrawBot to draw pixelated drawings (versus TSP or vectors)1 I don’t really notice a pause from the machine between each pixel.  It takes a few seconds to shade each pixel, then it moves to the next spot and starts over again.  However, when trying to draw TSP art I discovered that the time spent shading a picture obscured the amount of lag time that occurred between each drawing point!  As I tried to draw a TSP portrait of my family I found it was taking about 3 seconds between each little point – which translated to a VERY VERY long time for a VERY small drawing.

When I asked Sandy about this, he suggested that this lag would be eliminated by drawing from an SD card.

Sandy’s current setup, which allows for computer free printing, consists of an Arduino Mega 2560 R32 , a MicroSD card breakout board3 , and an Adafruit Motor Shield4 .  Thus, the electronics setup would cost about $100 if you were starting from scratch, or another $80 if you have been following along at home and have a similar setup to mine.  Apparently the problem is you can’t just shove a MicroSD card into an Arduino.  If you try to add one to an Arduino, then the card shield will end up taking up the pins necessary to use the Motor Shield.  Since the Arduino Mega has a lot of extra pins, some of those can be used towards accessing the MicroSD card.

However, I thought I had seen an Arduino that had a MicroSD slot on board. 5  When I searched around Adafruit, I found this Ethernet Shield R3 with MicroSD connector6 .  Not only does this little shield fit my existing Arduino Uno, have a MicroSD slot, and have an Ethernet port, but it also has input pins so that it can be stacked!  This makes me then wonder…  Could I just pop this $45 board between my Arduino Uno and Motor Shield, add some software and get cooking?  I have to admit, the idea of spending $45 more, rather than $80 more for a Mega and MicroSD breakout board appeals to me.  I suppose there’s the added benefit that I might be able to run a REALLY long ethernet cable to the ‘bot if I so desired since it would have a built-in ethernet port on the Ethernet Shield.

Now, I’m the first to admit that I know next to nothing at all about programming Arduinos or fiddling with such things.  I’m just a fair hand at slavishly following some other person’s excellent directions.  Please do me a favor and let me know whether you think adding this Ethernet shield between my Uno and the Motor Shield will or will not work.

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  1. Actually, the TSP drawings ARE vector graphics… []
  2. $65 at Adafruit []
  3. $15 at Adafruit []
  4. $20 at Adafruit []
  5. Spoiler alert: I was wrong []
  6. $45 at Adafruit []

TSP FTW!

Doctor Who Season 6 TSP Single Line Drawing
Doctor Who Season 6 TSP Single Line Drawing

I have been having SO MUCH FUN with traveling salesman problem / single line art!  I can’t wait to draw some of these with my DrawBot!

And, really, how much more perfect could this project get?  It’s a TSP nerdy math single line art drawing of my favorite sci-fi show for drawing with a robot I built using printed parts from my 3D printing robot. 1 2 3

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  1. Oh, nirvana! []
  2. I suppose the only way to make it better is to draw the image on a pizza using spray cheese. []
  3. Actually, I take that back.  Ew. []

There, now it’s fixed!

I’ve enjoyed this program on Fox called “Breaking In.”  It has this affable young guy who has been in a lot of cancelled shows, Christian Slater acting like what I can only imagine is what Christian Slater is really like, and it was always quite entertaining.  Since it was a pretty good and funny show, of course Fox cancelled it. 1

I’m glad they uncanceled it, but less glad that they “improved” it.  While I generally like Megan Mullally, she’s not adding anything to a show I already liked and her presence distorts those aspects I used to like.

  1. Seriously, Fox, what the hell?! I mean, at least NBC has the good sense to keep a show on the air for a season after it’s past its prime. []

Maker Faire 2012 – Torn

So, here’s the thing.  I really really really like the Maker Faire.  I’m just torn as to the most optimal way to experience it.

First of all, I love taking my wife and daughter to Maker Faire.  Getting to see so many amazing things all in one place – and getting to see them all through my daughter’s eyes is absolutely incredible.  I could spend the entire weekend just walking from exhibit to exhibit with them.

Second of all, I love talking to Makers and finding out what they do, what they love to make, and how they learned all the things they did to get there.  I honestly feel smarter just for having gone each year.1

Third, helping man the MakerBot table last year was AWESOME!  There was basically a constant crush of people coming by all super interested in what a MakerBot was and what it could be used to make.  Everyone was friendly, polite, interested, and had such excellent and insightful questions.  Imagine a place where you got to just hang out with people you like2 and people would stop by and ask you to tell them all about your favorite hobby.  Chances are you could talk endlessly and cheerfully about it.

Fourth, I’ve build and made some things over the last year of which I’m kind of proud.  While all the actual innovation credit must go to Sandy Noble and others, I like to think that my little drawing robot is uniquely mine.  It would be a lot of fun to put it up and have it draw a huge picture all weekend.  It would be even better with a time lapse video playing nearby.

So, what’s a maker to do?  Experience Maker Faire with the family, spend my time talking to makers, man the MakerBot table, or put something on display myself?  In all likelihood I’ll probably hit the Maker Faire before the family is up, help MakerBot, catch up with the family. 3

Oh, Natalie Imbruglia, only you know how I feel!

  1. Admittedly, it wouldn’t take much for that to happen []
  2. Such as the MakerBot crew! []
  3. But, it would also be cool to set up my drawbot in the background. []

How would you bring users back?

I’ve got this other website with several thousand registered users.  This morning I wondered – how many of these users are really active users and how many registered and then abandoned their account.  I was kind of shocked to discover that for one of my target demographics, only about 20% of those registered users visited the site in the last 180 days.

What I need to do is bring those users back.  Do you have any suggestions?

Proud Parenting Moment

This isn’t my absolute proudest parenting moment, but it is way up there.  Thursday we bought a bunch of small rolls, suitable for small sandwiches, from the grocery store.  Friday night I was talking about how delicious they are and how suitable they are for small sandwiches.  At which point my daughter tells me she’s going to eat them all leaving none for me.  I say some fatherly thing about sharing or somesuch.

Her response was… “These aren’t the rolls you’re looking for.”

As she waved two fingers at me.1

  1. Because of our reaction – which was a fit of hysterical laughter, she proceeded to repeat this continuously for several more minutes. []