Mblock 3.4.12 -
void loop() if (digitalRead(sensorLeft) == 1) motorRun(1, -150); motorRun(2, 150); else if ...
: Requires Adobe AIR (usually bundled with the installer). Step-by-Step Connection Guide
Converts your block scripts into C++ code, which can then be uploaded directly to the hardware for offline, standalone operation. mblock 3.4.12
: For advanced users, there are mBlock Extension Guides that explain how to create custom blocks and define hardware interactions.
| Feature | mBlock 3.4.12 | mBlock 5 (Modern) | Arduino IDE 2.0 | | :--- | :--- | :--- | :--- | | | 10+ (Transition to text) | 8+ (Pure block) | 14+ (Pure text) | | Hardware Support | mBot, Ultimate, Arduino Uno/Mega/Nano | mBot2, CyberPi, Micro:bit | 1000+ boards | | Upload Speed | Very Fast (Native C++) | Slow (Python/Cloud compile) | Fast | | Offline Use | Full | Limited (Requires download) | Full | | Code Generation | One-click C++ view | Python hidden in menus | N/A | : For advanced users, there are mBlock Extension
// Example .s2e snippet for a "Smart Variable" block ["w", "set smart variable %s to %n", "setSmartVar", "MyVar", 0, "setup": "Serial.begin(115200);", "inc": "// Auto-generated sync logic", "work": "smartVarWrite(\"0\", 1);", "loop": "checkSerialSync();" ] Use code with caution. Copied to clipboard 💡
Getting mBlock 3.4.12 running smoothly requires a few specific steps, especially on modern operating systems. System Prerequisites : Compatible with Windows 7, 8, 10, and 11. System Prerequisites : Compatible with Windows 7, 8,
Unlike newer versions that push heavily for cloud-based saving and AI accounts, 3.4.12 operates entirely locally, ensuring data privacy and zero dependence on stable internet connections in classrooms. How to Install and Set Up mBlock 3.4.12
mBlock is a powerful, block-based programming environment designed to bridge the gap between simple, drag-and-drop coding and the more complex world of hardware programming, particularly with Arduino-based robots. Originating as a specialized tool for Makeblock robots like the mBot, it has since grown to support a vast ecosystem of devices. The version we’re focusing on, 3.4.12, represents the final, most refined iteration of the v3.x series, which was built on Scratch 2.0. It embodies the "classic" mBlock experience: a straightforward, offline-first environment that many educators and hobbyists still rely on today for its reliability and direct hardware control.
If you can find a stable installer and a laptop from 2015, download it. Teach a student to turn on an LED using blocks, then show them the digitalWrite() command. That moment of understanding—seeing the abstraction peel away to reveal the machine code—is what mBlock 3.4.12 does best.