Offline voice-controlled robot dog

A compact four-legged robot that wakes up and follows voice commands offline, with no cloud connection. It walks using several servos, shows expressions on an OLED face and talks back through a built-in speaker. The prototype combines a 3D-printed body, a custom controller board and embedded firmware, aimed at educational robotics kits and STEM demos.

Small white 3D-printed quadruped robot with an OLED face, a green strap and many servo wires, on a blue workbench mat
Prototype on the workbench, OLED face showing an expression
Front view of the small robot with two blue eyes on its OLED screen, on a blue mat with test equipment behind
Front view on the bench

Tech stack

Controller
Custom controller board with servo interfaces
Voice
Offline voice module: wake word and command control
Motion
Multiple servos for quadruped walking
Display
OLED expression display
Audio
Integrated microphone and speaker
Structure
Compact 3D-printed frame

What we built

  • Mechanical design
  • PCB design
  • Servo interface design
  • Offline voice module integration
  • Microphone and speaker integration
  • Device-side embedded software

Development time

10 days

All builds →

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Or email [email protected] · WhatsApp +1 (323) 719-3730