|top| — Mblock 3.4.12

: Replace the USB cable. If using motors or heavy sensors, ensure the robot's physical battery switch is turned ON so it does not draw all its operational power solely from the computer. Windows 10/11 Driver Signature Errors

| Feature | Description | |---------|-------------| | | Based on Scratch 2.0 (not 3.0) – familiar layout, no browser needed. | | Arduino mode | Switch from "Stage" to "Arduino" mode to program boards directly. | | Code viewer | See generated C++ code for each block – excellent for transition to text coding. | | Board support | Arduino Uno, Mega 2560, Nano, Leonardo, and Makeblock Orion (custom Mega). | | Sensor support | Built-in drivers for ultrasonic, temperature, PIR, joystick, IR receiver, etc. | | Firmware uploader | One-click to flash standard firmware to Arduino for live stage interaction. |

Duplicate the digital pin block, place it underneath the wait block, and change its value from HIGH to LOW . mblock 3.4.12

is more than just outdated software; it is a time capsule of educational robotics perfection. It stripped away the complexity of C++ and wrapped it in the friendly, colorful embrace of Scratch, without relying on cloud services or modern web browsers.

One of the lost arts of is the "Extensions" folder. Because the software is open-source adjacent (based on Scratch), you can write custom JavaScript or C++ extensions. : Replace the USB cable

This version was a part of the 3.x lifecycle. While Makeblock never made the source code for 3.4.12 publicly available, the community has pieced together its context.

: A compact board layout ideal for small-scale breadboard projects. | | Arduino mode | Switch from "Stage"

The built-in blocks for sensors (ultrasonic, line-follower, temperature, potentiometer) and actuators (servos, DC motors, RGB LEDs) are comprehensive. You can control an LED on pin 13 with the same ease as moving a cat sprite.

is more than just software; it is a teaching philosophy frozen in time. It represents a moment when engineers decided that the gap between "playing a coding game" and "writing firmware for a microcontroller" could be spanned by a single button.

On Windows 10/11, you often have to disable driver signature enforcement to install the Arduino USB drivers included in the package. On modern Macs (M1/M2/M3), it is effectively unusable because the required Java dependencies and serial drivers do not exist for ARM architecture.

Arduino Uno, Arduino Nano, Arduino Mega 1280/2560, and Arduino Leonardo.