I'm Tiny,
But I Do It All!

Pinky Zero!
A Friendly Mobile Robot, Three Times Smaller

Introduce Product

Pinky Zero
(Pinky Zero)

An ultra-compact mobile robot, three times smaller than Pinky Pro
The server runs inside the robot,
while your control code runs on your PC.
Start with a single line of Python, without setting up a robot development environment.

Main Features

Applications

Code Directly on Your PC

Students run their code on a PC. One call to pinkyzero.connect() brings in sensor data, and the files they create stay on the PC.

Line Following and Obstacle Detection

Use five floor IR channels and four distance IR channels to follow black lines and navigate around obstacles.

Connect Through Expressions and Sound

Create interactive responses with 18 expressions, three NeoPixel LEDs, a speaker, and a microphone.

Code Anywhere

Learn Together

With just a laptop,
start a robotics lesson anywhere in the classroom.

Application example 1 — Classroom line-following lesson

Architecture

Code on Your PC. Watch Your Robot Move.

Inside Pinky Zero, a server runs, while the control code executes on your PC.
Unlike Pinky Pro, which runs code on the robot, Pinky Zero does not require you to configure your development environment on the robot.

How Commands Travel

Student Code (PC)

pinkyzero Library

WebSocket : 8765

Robot Server

Hardware

Connect Without Installation

Connect directly to the robot's access point (192.168.7.1) or through a router. Commands use JSON, and the server streams robot status at 30 Hz.

12 Control Modules

Control Battery, Button, Buzzer, Camera, IMU, IR, LCD, LED, Mic, Motion, Motor, and Speaker through the single pinkyzero library.

Safety Watchdog

If no update arrives within 0.7 seconds of the last motion command, the server stops the wheels. The library automatically refreshes the command every 0.2 seconds.

Expressions

Responds with 18 Expressions

Expression images are stored on the robot, so they change smoothly even over a slow connection.
Both English and Korean names are recognized: emotion("joy") and emotion("기쁨") perform the same command.

Interested expression — interested Interested

Surprised expression — surprised Surprised

Technical Specifications

Key Specifications

Runs on PC · WebSocket 8765 Control Method

Two-wheel differential drive · Target RPM Drivetrain

JPEG · Default 15 fps Camera

5 channels (12-bit ADC) Floor IR (Line)

4 channels (12-bit ADC) Distance IR (Obstacles)

BNO055 (9-axis) IMU

3,360 counts/revolution Encoder

ST7789 · 284 × 240 LCD (Touch Supported)

NeoPixel × 3 LED

MAX98357A · ICS-43434 Speaker / Microphone

8.4 V fully charged · Battery level indicator Battery

Specifications

Explore Pinky Zero

Compared with Pinky Pro

	Pinky Zero	Pinky Pro
Where Student Code Runs	PC	On the robot (Jupyter)
Control Library	pinkyzero (bundled with the app)	pinkylib (installed on the robot)
Ultrasonic / LiDAR	None	Available
Floor IR	5 channels	3 channels
Where Created Files Are Stored	~/pinky_ws on the PC	On the robot

Detailed Specifications

Communication	WebSocket · Port 8765 · JSON commands	LCD	ST7789 · 284 × 240
Default Address	192.168.7.1 (robot access point)	Touch	CST816 · Coordinates · Gestures
Status Updates	Default 30 Hz push	Expressions	18 (stored on the robot)
Drive	Left/right two-wheel differential drive	LED	NeoPixel × 3 (steady, blink, dim)
Encoder	3,360 counts/revolution	Buzzer	Note names and melodies (maximum volume at 4 kHz)
Wheels	28 mm radius · 176 mm per revolution	Speaker	MAX98357A (I2S)
Wheel Separation	81.1 mm	Microphone	ICS-43434 (I2S)
Floor IR	5 channels · 12-bit ADC	Camera	JPEG · Default 15 fps
Distance IR	4 channels · 12-bit ADC	Battery	8.4 V fully charged · 6.0 V minimum
IMU	BNO055 9-axis	Buttons	3 (active-low)
Motion Sensor	PAT9125 optical (dx / dy)	Watchdog	0.7-second motion command timeout