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The Sphere-O-bot is a friendly art robot that can draw on spherical or egg-shaped objects from the size of a ping pong ball to a large duck egg (4-9 cm).

The robot is based on the cool original design of Evil Mad Scientist

If you have a 3D Printer and get the ancillary elements (basic hardware + Arduino), you can create this ART robot

Step 1: A Little Bit About This Robot

The Sphere-O-Bot is a simple 2 axis drawing machine that can draw on most spherical surfaces. You can use it to decorate balls or eggs.

This design also features the regular JJrobots electronics (the same we have used in all of our robots). So you can create this robot or any other just simply printing new 3D parts and uploading the appropriate code. Create a B-robot EVO or an iBoardbot after your Sphere-o-bot!

The Sphere-O-bot is adjustable, and is designed to draw on all kinds of things that are normally “impossible” to print on. Not just eggs but ping pong balls, Christmas ornaments, light bulbs, and (yes) eggs (duck, goose, hens…).

The original idea belongs to Evil Mad Scientist. The Sphere-O-bot frame was designed by Attila Nagy and modified by JJrobots. The pen and egg motors are high-torque precision stepping motors, and the pen lift mechanism is a quiet and reliable servo (SG90) motor.

<p>Hey. I use built Spherebot based <a href="http://www.thingiverse.com/thing:201052" rel="nofollow"> http://www.thingiverse.com/thing:201052 </a> but it is not precise. I can not scale the fine drawings. I frequent problem converting to gcode. I used Arduino Nano + 2A4988 without PCB. If you change the configuration pins will work?</p><p>#define step1 7</p><p>#define dir1 8</p><p>#define enableRotMotor 4</p><p>#define rotMicrostep 16</p><p>#define step2 12</p><p>#define dir2 5</p><p>#define enablePenMotor 4</p><p>#define penMicrostep 16</p><p>#define servoPin 10</p><p>I can not find the MS1, MS2 and MS3 </p>
<p>Yes, it should work. The Sphere-o-bot arduino code is here: <a href="https://www.jjrobots.com/wp-content/uploads/2016/07/Sphere-O-Bot-CODE_ARDUINO.zip">https://www.jjrobots.com/wp-content/uploads/2016/0...</a></p><p>Just modify (if you need to) the definitions in the file Ejjduino_Arduino.ino</p>
<p>I have only: &quot;Unable to find an Eggbot on any serial port. :(&quot; but, when i connect to the terminal on 9600 baud its says &quot;hi&quot;. Communication is OK. (<a href="https://github.com/evil-mad/EggBot/releases/download/v2.4.0/EggBot_240A.exe" rel="nofollow">EggBot_240A.exe</a> was installed)</p>
<p>For the Arduino Nano: try the trick of replacing the regular eggbot.py for the modified one you will find at the end of this webpage: http://www.jjrobots.com/sphere-o-bot-assembly-and-user-guide/</p>
<p>&quot;Unable to find an Eggbot on any serial port. :(&quot; I may have a bad name in the Device Manager ? or baudrate ?</p>
RIP OFF HERE<br>https://www.kickstarter.com/projects/938509544/eleksegg-cnc-drawing-machine
<p>not awailable to sale outside EU.. wanted to order it from Serbia (south east europe) but no awailable delivery method.. damn guys we have postal service here/ TNT/DHL/FEDEX etc.. we arent in Mongolia or somewhee like that..</p>
<p>Yes, it is! ;-) We have been reducing the shipping cost due to large quantities sent the last months and Serbia is now again a shipping destination</p>
<p>Using what software you drawing those model images?</p>
<p>Inkscape is a great free drawing software. Here is the eggbot empty template (regular egg dimensions) where you can draw everything you want to: https://goo.gl/swQB22</p>
<p>Thanks brother :)</p>
<p>One of the A4988 was defective. :-((</p>
<p>if you got the kit from us, email us to info@jjrobots.com, we will send you a replacement ;-)</p>
There is a rip-off of your design now for sale on Kickstarter!! You should go onto the site and report it!
<p>Well, the sphere-o-bot is an OPEN SOURCE robot. No problem if someone want to &quot;copy/modified&quot; it (as long as they mention all the contributions). Just curiosity, what is the link to that design? </p>
<p>Is this kit available for sale?</p>
<p>Yes, the KIT is available here: http://www.jjrobots.com/product/sphere-o-bot/ ;-)</p>
<p>Just checking: you are located in the UK (so for now, still within the EU without extra taxes etc if I have one shipped to the NL)?</p><p>How much would shipping be to the NL?</p>
<p>No extras taxes for customers from Europe (neither USA as we send it as a educational robot)</p>
<p>The pen motor would rotate in one direction only. I did everything well, not good.</p>
<p>Check the motor direction pin</p>
<p>great project, but just for the info Folger Tech has the equiv motors for much better price. </p><p>I have been using these motors for several years and never been disappointed. </p><p>check out $9.99</p><p><a href="https://folgertech.com/products/nema17-17-stepper-motor-5000g-cm-3d-printer-reprap-medel-prusa" rel="nofollow">https://folgertech.com/products/nema17-17-stepper-...</a> </p>
<p>I visited the sites mentioned in the text but nowhere where the plastic parts to be found !</p><p>The only option seems to be at printing them yourself.</p><p>Which i can&acute;t, i don&acute;t have access to a 450 Euro printer, and can&acute;t afford to buy one.</p><p>Is there some place where ALL the parts can be bought ?</p><p>Wille B</p><p>Stockholm</p>
<p>try https://www.3dhubs.com/ put your zip code or city and get bids from people in your area to print them for you.</p><p>Usually much cheaper than you would expect.</p>
<p>Look for &quot;Order This Printed&quot; icon on following link: </p><p><a href="http://www.thingiverse.com/thing:1683764" rel="nofollow">http://www.thingiverse.com/thing:1683764</a></p><p>They have a printing service...</p><p>Regards,</p><p>Cesar S.</p>
Cool project! I had to split the main base model to fit on my printer and epoxied it together, but it all works. Still yet to color an egg....
<p>could you use Pancake seppers instead of the full sized ones?</p>
Clever build!<br>Check out my take on it :https://www.instructables.com/id/LEGO-EGGBOT/
<p>I like this. Amazing to see what some can do with some stepper motors and clever thinking. Bravo </p>

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Bio: We love robots, DIY and funny science. JJROBOTS aims to bringing Open robotic projects closer to the people by providing hardware, good documentation, building instructions ... More »
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