: Open "Extensions" and ensure the matching hardware library is checked.
By default, mBlock starts in "Stage Mode" (where blocks control a sprite on the screen). To program physical hardware permanently, go to the menu and click Arduino Mode . The screen layout will shift, revealing the raw C++ code panel on the right side. Common Troubleshooting Tips
: Plug in your USB cable, open "Connect", choose "Serial Port", and select your COM port. mblock 3.4.12
The flagship entry-level educational robot kit.
Changing graphical blocks automatically updates a side panel displaying the equivalent Arduino C++ code, providing a powerful bridge to text-based coding. : Open "Extensions" and ensure the matching hardware
: Modern Windows operating systems occasionally block older unsigned drivers.
: For advanced users, there are mBlock Extension Guides that explain how to create custom blocks and define hardware interactions. The screen layout will shift, revealing the raw
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
A 3-in-1 advanced educational robot kit.
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
Software updates often introduce new features, but they can also change user interfaces or drop support for older hardware. Version 3.4.12 is frequently selected for classrooms and makerspaces for several distinct reasons: