Legged robots

MechDog AI

An ESP32 robot dog with a large AI model module for voice and vision, and a 3DOF arm in the Advanced Kit.

Arduino
ESP32
Suggested for primary
Suggested for secondary

MechDog AI is a desktop robot dog on the ESP32 platform with a WonderLLM AI module on its head. The module combines a 2MP HD camera, a microphone, a speaker and an LCD touchscreen, and links MechDog AI to large language, speech and vision models such as DeepSeek, Doubao and Qwen3, so it can hold a conversation, describe what it sees and act on spoken commands. Eight coreless servos and an inverse kinematics gait with a 6-axis IMU drive the legs. The Advanced Kit adds a 3DOF robot arm for grasping and carrying. It can be programmed in Scratch, Arduino or Python.

Zeta42 is an authorised Hiwonder partner in the Middle East.

Configurations

Choose how it ships.

Model: Standard Kit · Advanced Kit

What it does

Built for.

WonderLLM AI module
Built on an ESP32-S3, the module fuses text, voice and vision models. Hiwonder lists DeepSeek, Doubao and Qwen3, more than 30 dialogue languages, and a personality, voice and behaviour you can customise.
Offline and online AI
In both kits, AI vision and voice interaction run offline, and online large models add conversation, scene understanding, posture perception and an intelligent watchdog mode.
3DOF arm (Advanced Kit)
The Advanced Kit's lightweight arm, driven by three micro servos, picks up objects and, guided by the large models, carries them where it is told.
Inverse kinematics gait
A custom 8DOF inverse kinematics algorithm and a 6-axis IMU give movement in any direction, custom gait parameters, stepless height adjustment and stable walking, backed by open-source kinematics APIs.
From Scratch to Python
Learners start with Scratch blocks and move on to Arduino and Python. The PC software's action editor and coordinate control build movements without code.
Sensors and control
An ultrasonic sensor measures distance and avoids obstacles, video streams over Wi-Fi, and the app controls one robot or a group.

Where it is used

Applications.

Primary and secondary AI lessons with a robot that listens, talks and sees
A coding path from Scratch to Arduino and Python
Teaching legged movement and inverse kinematics
Embodied AI tasks: find, grasp and carry an object (Advanced Kit)

Specifications

The full sheet.

Product dimensions: 269 × 126 × 174 mm (powered on, standing, Advanced Kit)
Product weight: 711 g (Advanced Kit)
Body material: Hard aluminium alloy
Degrees of freedom: 8DOF body + 3DOF robotic arm (Advanced Kit)
Power supply: 7.4V 1500mAh 5C Li-ion battery
Control chip: ESP32 dual-mode SoC
AI module: WonderLLM AI module on ESP32-S3, with 2MP HD camera, microphone and speaker
Servo model: HPS-0618SG coreless servo ×8; LFD-01M micro servo ×3 (arm, Advanced Kit)
Programming: Scratch, Arduino, Python
Software: PC action editing software + app (Android and iOS)
Control method: PC / app
Package dimensions (Advanced Kit): 349 × 164 × 135 mm
Package weight (Advanced Kit): Approx. 1.16 kg