Scribbler S3 Robot

by Parallax Inc

Fully programmable, open-sourced, and user-hackable robot!

The Scribbler S3 STEMtrunk

The Scribbler 3 (S3) robot is the perfect place for kids to begin their STEM journey. The robust, easy-to-use S3 Robot is simple enough to set up in minutes, and is powerful enough to teach engaging activities throughout the year. Programming, robotics, and even math and art are all possible with the S3. Using the BlocklyProp online tool to program the Scribbler is a cinch! It is the S3 Robot’s primary programming environment. Its interlocking blocks with readable text let beginners build programs in an intuitive, visually logical way. The BlocklyProp tool exposes the S3’s encoders to provide control over distance and speed for all possible types of movement. Pre-made blocks support all of the S3 robot’s sensors and motors.

Get STEMtrunk

Credits Per Trunk: 3

Recommended Grade Levels: 4-8

Retail Value: $179

What’s Included:

  • Scribbler 3 Robot

  • S3 Li-Po battery

  • USB A to Micro-B programming/charging cable


The Scribbler 3 Robot requires a computer with a USB connection and an internet connection to access the browser-based BlocklyProp online software.


BlocklyProp Online Graphical Programming Tool (Browser-based)
Parallax FTDI USB Drivers (Windows)
Parallax FTDI USB Drivers (Mac)


1. Getting Started with BlocklyProp for the S3
2. Lights and Sounds
3. Simple Motion with Motors Blocks
4. Navigating with Sensors
5. Hacker Port Expansion


► Scribbler Info Poster
► Printable Line Following Tracks