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The nice thing about 3D printing is that it makes building robots easy. You can design whatever configuration of parts that you can dream up and have them in your hand virtually right away. This allows for rapid prototyping and experimention. This particular 3D printed robot is an example of that.

This idea to have a walker bot that shifted its front center of balance is one that I have had for a few years. However, implementing it with off the shelf parts always proved rather tricky and prevented me from really trying. Yet, when I realized that this could be done quickly and easily with 3D printing, I was able to finally create this robot in about two days. Basically, 3D printing had enabled me to take an idea and actualize it in less than 48 hours.

If you want to try your hand at making this easy robot, I have included the files and posted instructions for you to make on yourself. This is definately a fun weekend project for someone with a 3D printer who knows a little bit about electronics and soldering to get their feet wet with robotics.

Step 1: Robot Parts

Get the following materials:

(x1) Afinia 3D printer (RadioShack #277-224)
(x2) Standard servos (RadioShack #273-766)
(x1) Arduino micro (RadioShack #276-258)
(x1) 40-pin socket (RadioShack #276-1996)
(x1) PCB (RadioShack #276-150)
(x1) 9V battery snap (RadioShack #270-324)
(x1) 9V battery holder (RadioShack #270-326)
(x1) 9V battery (RadioShack #23-2209)
(x2) 3-pin headers (RadioShack #276-266)
(x13) M3 nuts and bolts
(x4) pencils

<p>where's the code at?</p>
<p>I have made the robot, following Randy instructions given here. Problems I have had was that I am new to Arduino, and instead of &quot;Micro&quot; I bought &quot;Mini&quot;. That didn't work so well, so I bought &quot;Uno&quot;, as I saw one guy on internet doing nicely with servos on it. And also the body I didn't print, as that would take 20 hours, but cut out of styrofoam. Tried to be economical (here, in Ukraine, we have to be...)</p>
<p>Ok. Where's the video of the walking bot ? O_o</p>
<p>Hi,<br>Do you know what else would work in place of the 3-pin header &amp; extension cable? It is not available at RadioShack anymore....</p>
<p>you can buy a breakable pin header that's what i did and it worked perfectly fine you just have to break it so there is 3 i bought mine at amazon </p>
<p>Do you remember the total cost? For parts, not the 3D printer, of course.</p>
<p>I found the code and am looking at it. What servo library and code do I use? The #include line seems to be blank.</p>
<p>I have a student building this and the parts print just fine after some minor adjustments on the placement (we have a MakerBot). For those having trouble downloading the files: right click the link and choose Save Target As... (or whatever the phrase is for your browser) and make sure you name the file appropriately. For example, using &quot;3dRobotTorso.stl&quot; as a file name instead of whatever your browser wants to use makes things easier when you then need to find and open it in your printing software. Dunno why the Instructables server is messing with the file type, but at least we have our built-in workaround.</p>
<p>Trying to down load these parts but I keep getting gibberish any ideas? Body and one arm download perfectly the others I am unable to download</p>
<p>I would like to download the STL files as well, but when I click them they open in the browser and there is no way to save them in the appropriate format. Please make them available. I would like to make this for my son. Thanks.</p>
<p>Hi! I really want to have a go at making this, but i think that the links for the two front leg STL files are broken, so I can't download them. Could you please replace those links? Thanks!</p>
<p>adorable! I want ten of these in different colors. they can do all the erasing in my writing for me</p>
good!
<p>Thank you for your nice instructable.</p><p>Rima</p>
<p>You're welcome.</p>
<p>I want to have a 3D printer just for making this robot. It's awesome Randy!</p>
<p>Thanks</p>
<p>Hi, olt the servo in place using the bolts installed earlier to complete the front assesmbly.</p>
<p>I want to have a 3D printer just for making this robot. It's awesome Randy!</p><p>QU&Eacute; MIRA, SAPO? :-)</p><p>Greetings from Azerbaijan!</p>
<p>Nada mas lo importante. </p><p>How is life in Azerbaijan? Build any robots of your own recently? </p><p>You are welcome to come use the 3D printers here any time. </p>
Well, I build these three instructables in Baku:<br><br>http://www.instructables.com/id/Superheroic-Wrist-Gun-made-of-plastic-trash-and-an/<br><br>http://www.instructables.com/id/Simple-Robo-Dog-made-of-a-toy-gun-a-mouse-and-a-pi/<br><br>http://www.instructables.com/id/Soldering-Iron-Base-made-with-a-sardines-can/<br><br>Life in Baku? Married to the most amazing woman, trying to get a job (it's very complicated if you don't know at least Azerbaijani and Russian), with two cats (Cringer and Leeloo. You can see them in action in the Superheroic Wrist Gun video). But everything is ok.<br><br>And thanks for the invitation! Remember you have a home here in Baku, the day you want to come and visit!
<p>That's awesome ! :)</p>

About This Instructable

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Bio: My name is Randy and I founded the Instructables Design Studio. I'm also the author of the books 'Simple Bots,' and '62 Projects to ... More »
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