March 9, 2026
Description
Join our HP Robots Otto: Remix Challenge click here
An interactive robot that anyone can make!
Otto walks, dances, makes sounds, avoids obstacles, you can code on your own and even customize, it is completely open source, Arduino compatible and 3D printable.
💻 Programmable with Otto Blockly or Arduino IDE
👣 Walks & dances
🦇 Avoids obstacles
🔊 Makes emotional sounds and melodies
more details in https://www.ottodiy.com/
Otto is very well designed for 3D printing, so won't give you trouble if you follow these common parameters:
FDM 3D printer, PLA is enough.
No supports or rafts.
Resolution: 0.2mm
Fill density 15%
All parts in total use 100gr aprox. equivalent to 35m of regular PLA 1.75mm thickness, it should take around 4 hours to 3D print a full set of parts for one Otto even less with optimized settings depending on your printer and slicer.
🖥 Otto Nano Microcontroller + I/O board
🔌 USB cable
🔋 Rechargeable 16340 battery booster do NOT use Alkaline not enough power or use (soldering required)
Toggle or 8x8 push switch depending on the body your print
⚙ 4 x micro servo motors with set of screws.
🦇 Ultrasonic sensor HC-SR04
🔊 Buzzer passive Ø12mm
🌈 8x DuPont female to female jumper wires
Small Phillips screwdriver magnetized
3D Printed head
3D Printed body
3D Printed legs (2)
3D Printed feet (2)
Looking for more stable legs? print these: alternative robot biped legs
Expand into a Humanoid robot or Smart robot
Change the legs to Wheels robot or Quadruped robot
Change the head to Emotional LED eyes robot
Make the head rotate with this rotating head expansion
or simply decorate with these robot face accessories
Avoid hassles with the new HP Robots Otto!
We invested lots of time and resources to provide open-source code, software, and hardware, please support this project by just following us, giving us a ❤ Like and share and you are welcome to be a part of this friendly community of robot builders, teachers, and makers.
License:
Creative Commons — Attribution — Share Alike
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HP Robots Otto
