Mblock 3.4.12 Upd Jun 2026

It is widely remembered as the "workhorse" version for educators and hobbyists using Arduino Uno, Mega, and Makeblock robots before the major architectural shift to web-based standards.

mBlock was developed by Makeblock to address this gap. Derived from the open-source code of Scratch 2.0, mBlock allowed users to program Arduino-based robots (such as the mBot) using the familiar block-based interface. Version 3.4.12 represents the mature stage of the Scratch 2.0-based lineage before Makeblock transitioned to the web-based Scratch 3.0 architecture (mBlock 5). This paper posits that mBlock 3.4.12 remains a subject of technical interest due to its specific "hybrid" coding capabilities and its stability on legacy systems. mblock 3.4.12

Open mBlock 3.4.12. Switch to Arduino Mode (bottom right). It is widely remembered as the "workhorse" version

This was the standout feature of the mBlock 3 series. Version 3.4.12 streamlined the process of programming an Arduino board. Version 3

The proliferation of STEAM (Science, Technology, Engineering, Arts, and Mathematics) education in the 2010s created a demand for software platforms that could lower the barrier to entry for robotics and physical computing. While MIT’s Scratch 2.0 provided an excellent environment for digital animation, it lacked native support for external hardware sensors and actuators.