Picture of How to build your own sugru robot, Fixbot

So you saw our video and you've fallen in love with Fixbot, have you? That's okay, it's understandable. We've fallen in love with it too.

We have some great news! You can build your own Fixbot too, provided that you're okay with getting your hands dirty and that you have access to a Makerbot / RepRap / Ultimaker / 3D printer. You don't need to be a code wizard or a da Vinci descendant to get through this instructable, but it will help if you know a bit about how to upload sketches to an Arduino. 

Join us on a journey of bearings, nuts, servos, lots of wires and some ABS, and by the end of it, you'll have your own Fixbot to play with!

P.S. we'd like to give a hat tip to David Chatting for his trigonometry skills and to Benedikt Gross for his movement learning code!

Step 1: What you'll need

Picture of What you'll need
Nuts and bolts and bearings
  • 16 x M3, 16mm long bolts and nuts
  • 16 x M4, 12mm long bolts and nuts
  • 28 x M1.6, 10mm long bolts
  • 3 10mm outer diameter x 3mm inner diameter ball bearings
  • 4 x Hitec HS-422 servos
  • 1 x SpringRC SM23/33 microservo (also known as sm-s2309s)
  • 1 x Arduino
  • 1 x 7.5V DC power supply
  • Red, yellow and black solid-core wire
  • 3 cable ties
  • 2 small terminal blocks
  • M4 allen key
  • M3 allen key
  • Pliers
  • Needle file
  • Wire strippers
  • Small phillips-head screw driver
  • Small flat-head screw driver
iramey2 years ago
Is there any way of getting the 3D printed parts without a 3D printer? If so, where at?
projectsugru (author)  iramey2 years ago
hmmm, this is a good question.
So, you could upload the files onto Shapeways and order from them.
Alternatively, you could do a google search for 3D printing companies in your area and send the files to them. You could be very surprised about how many companies can do this. Finally, you could hit up your own social group and see if someone you know can print this for you....
I am rather curious as to where you obtained those bearings from. I have looked around and can only seem to find ones that are 4mm in thickness, 3mm inner diameter and 10mm outer diameter. Would these be okay to use or does the thickness have to be smaller or bigger? I am almost ready to build this robot, just need to get the bearings.
Farid0072 years ago
Funny video
Farid0072 years ago
Funny video
i want one
zkus2 years ago
Awesome. Think Ill make one of these...

How married are you to the servos you have listed (i have a whole box of unused servos some where, and would hate to order more...)
projectsugru (author)  zkus2 years ago
Hey zkus,

Most of the chassis is modelled to fit the hitec servo mount. You could see if your servos are going to fit by comparing your servo's datasheet with the hitec hs-422's datasheet.

We've also made the parametric 3D files available to the public, so you could change the designs to fit your servos!
Is there any instructable on how to build a parametric 3d file?
Sweet, love it when things are parametric (though in a format i am unfamiliar with... dont happen to have openscad files laying around by chance?) Ill check the datasheets, hopefully they just match. Cheers!
blackwellj2 years ago
i think you are confusing parts a and be, it might also be nice to say how many of each parts you need to print off
larystoy2 years ago
For those of us that don't have a "cnc printer" are you supplying the frame work for this bot ? If so how can we order the parts ?


You could cut them out of wood or plastic, or get them 3D printed from one of the many available online services.
dunnos2 years ago
Sweet project! Maybe I'll scale it up a bit and give it a claw!

Now that I think about it I think I'll make it a slave to my own arm! Flex sensors or kinect should be a good option...

Wow I am itching to try this now :)

projectsugru (author)  dunnos2 years ago
That's a great idea! Keep us posted!
alcurb2 years ago
Very nice project. Funny and well-crafted video.
Nice Idea, and what a GREAT VIDEO !
great tip about winding the cables! this project is really well done!
Lyron2 years ago
Love the video! Awesome, just awesome.
projectsugru (author)  Lyron2 years ago
thanks :) delighted you like it