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Otto DIY

An interactive robot that anyone can make!

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What can Otto do?

Otto walks, dances, makes sounds and avoids obstacles.

Why Is Otto special?

Otto is completely open source, Arduino compatible, 3D printable, and with a social impact mission to create an inclusive environment for all kids.

Otto is design using Autodesk 123D Design free software you can modify it for customization or further improvements!

Otto was inspired by another robot instructable BoB the BiPed and programmed using code from another open source biped robot called Zowi.

CC-BY-SA

Otto's differences are in the assembled size (11cm x 7cm x12cm), cleaner integration of components and expressions. Using off the shelf and 3D printed parts, simple electronics connections (almost no welding required), and basic coding skills, you will be able to build your own cute Otto friend in as little as two hours!

Watch the funny video dancing!

This Project focuses on how to build the Otto DIY version - yes, more Ottos are coming and you can stay tuned for updates by subscribing here

Creative Commons LicenseOtto by ottodiy.com is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

OTTO_InstructionManual_V03.pdf

Building instructions

Adobe Portable Document Format - 1.34 MB - 11/15/2016 at 04:55

Preview Download

OTTO_footR_v2.stl

Right foot

Standard Tesselated Geometry - 1.51 MB - 11/15/2016 at 04:58

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OTTO_footL_v2.stl

Left foot

Standard Tesselated Geometry - 1.51 MB - 11/15/2016 at 04:58

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OTTO_body_v3.stl

main body

Standard Tesselated Geometry - 349.01 kB - 11/15/2016 at 04:55

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OTTO_leg_v3.stl

3d print part for the leg (need 2) this version is shorter

Standard Tesselated Geometry - 429.87 kB - 11/15/2016 at 04:55

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OTTO_leg_v2.stl

longer legs (optional)

Standard Tesselated Geometry - 1.46 MB - 05/19/2016 at 02:58

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OTTO_head_v3.stl

print in green

Standard Tesselated Geometry - 238.36 kB - 11/15/2016 at 04:55

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View all 7 files

  • 1 × Arduino Nano ; preferable with the pins already weld it
  • 1 × Arduino Nano Shield I/O Extension Board Expansion XD-212
  • 1 × Mini usb cable (most Arduino dealers provide the cable)
  • 1 × HC-SR04 Ultrasound sensor.
  • 4 × Mini servo SG90 9g (each one should come with 2 pointed screws and one small screw).
  • 1 × 5V Buzzer.
  • 6 × Female to Female breadboard connectors cable 10cm
  • 1 × 4 AA Battery case stacked one
  • 4 × 1.5V AA batteries
  • 1 × Mini cross screwdriver important magnetized

View all 15 components

View all 14 project logs

  • 1

    Who is Otto?

    An interactive robot that anyone can make!

    What can Otto do?

    Otto walks, dances, makes sounds and avoids obstacles.

    Why Is Otto special?

    Otto is completely open source, Arduino compatible, 3D printable, and with a social impact mission to create an inclusive environment for all kids.

    Otto was inspired by another robot instructable BoB the BiPed and programmed using code from another open source biped robot called Zowi.

    CC-BY-SA

    Otto's differences are in the assembled size (11cm x 7cm x12cm), cleaner integration of components and expressions. Using off the shelf and 3D printed parts, simple electronics connections (almost no welding required), and basic coding skills, you will be able to build your own cute Otto friend in as little as two hours!

    Otto is design using Autodesk 123D Design software you can modify it for customization or further improvements!

    This instructable focuses on how to build the Otto DIY version - yes, more Ottos are coming and you can stay tuned for updates by subscribing on http://ottobot.org/subscribe/

    Step 1: First gather all parts and tools

    Gather all the off the shelf parts that you'll need for this assembly. Here's the list:

    1. Arduino Nano; preferable with the pins already weld it

    2. Arduino NANO Shield I/O Extension Board Expansion XD-212

    3. Mini usb cable. (most Arduino dealers provide the cable)

    4. HC-SR04 Ultrasound sensor.

    5. Mini servo SG90 9g x4 (each one should come with 2 pointed screws and one small screw).

    6. 5V Buzzer.

    7. Female to Female breadboard connectors cable 10cmx6.

    8. 4 AA Battery case

    9. 1.5V AA batteries x4.

    10. Mini cross screwdriver. important magnetized

    And then you only need to 3D print 6 parts in total:

    11. 3D printed head.

    12. 3D printed body.

    13. 3D printed leg x2.

    14. 3D printed right foot.

    15. 3D printed left foot.

    Optional: cutter for post cleaning the 3d parts (if the 3d print quality is good enough no need) and a soldering iron (if you want it battery power otherwise can still connect it through usb to energize)

    That's all simple!; Download all .stl files, If you do not have a 3d printer you can always use services like 3dhubs.com or local maker spaces.

    The total cost of this materials could be no more than 49 $US!

  • 2

    Step 2: 3D print settings

    Otto is very well designed for 3D printing, the files that you had downloaded are property oriented and centered, so wont give you trouble if you follow this common parameters:

    • Recommended to use a FDM 3D printer with PLA material.
    • No need supports or rafts at all.
    • Resolution: 0.15mm
    • Fill density 20%

    You can print individually piece by piece to match the colors of the original design or optionally print all at the same time in an area of 14cm x 14cm.

    For slicing and generating the g code for the machine free slicer software like Cura or in our case FlashPrint that comes with the FlashForge Finder 3D printer that we are using (If you are outsourcing the printing no need to worry about it)

    After printing you will need to clean a little bit the legs and feet areas that fix the motors.

  • 3

    Step 3: Reorganize & check your parts from bottom to top.

    As mention in step 2, Micro servo motors come with 3 screws in the picture are now included and rearranged the parts number for easy reading.

    Remember to have ready your magnetized mini screwdriver.

    Print the attached .pdf instructions manual for convenience.

View all 12 instructions

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