Mblock | 3.4.12
Operates fully offline without requiring cloud accounts or an active internet connection, making it ideal for classrooms with limited connectivity. Hardware Compatibility
Leo leaned back, a grin spreading across his face. He wasn't just playing with a toy; through the legacy lens of mBlock 3.4.12, he had just learned his first lesson in robotics and automation
The last code uploaded remains stored in the microcontroller's volatile flash memory. To clear it, upload a blank program containing only the setup block, or run Connect > Reset Default Program . Summary of mBlock Versions mBlock 3.4.12 (Legacy) mBlock 5 (Current) Core Base Scratch 2.0 (Offline Optimized) Scratch 3.0 (Web/Cloud Optimized) Primary Code Language Arduino C++ Python & Arduino C++ System Footprint Extremely low, runs on older PCs Moderate, requires updated web views AI & IoT Support Limited / Extension dependent Deep native integration mblock 3.4.12
: Translates visual blocks into raw C++ code.
Grant administrative permissions and let the driver installation script complete. Step-by-Step Guide: Connecting Your First Robot Operates fully offline without requiring cloud accounts or
| Feature | mBlock 3.4.12 | mBlock 5 | Scratch 3 | |---------|---------------|----------|-----------| | Offline | Full | Partial (requires login for some features) | Yes | | Arduino code generation | Native C++ | Via extension, but less transparent | No | | AI / IoT | No | Yes (Microsoft AI, IoT cloud) | No | | Learning curve | Low (Scratch-like) | Medium (new UI) | Very low | | Hardware support | Arduino + Makeblock | Many (Micro:bit, ESP32, etc.) | None natively |
Select the and choose the corresponding COM port. To clear it, upload a blank program containing
The software compiles the visual blocks into machine-readable binaries and flashes them directly to the board's internal ROM. This allows the robot or microcontroller to run autonomously from an external battery pack without a computer tether. Key Technical Features
When [Green flag] clicked Forever If <(Line sensor Left) = [1]> then // 1 usually means black Turn left (Speed 150) Else If <(Line sensor Right) = [1]> then Turn right (Speed 150) Else Go forward (Speed 200) End End End
In Arduino Mode, the visual blocks compile directly into C code. Clicking writes the compiled binary directly onto the flash memory of the robot's microprocessor. Download Page – mBlock
