Software Update! More Learning Resources, Smarter Connectivity with R4 Series!

Anthony Hsu
2 days ago
2 min read

Updated: 22 hours ago

This update brings significant enhancements in IoT connectivity, new sensor support, more motion control, Learning Resource... and overall usability — making Mini R4 an even more capable platform for education, competitions, and advanced robotics projects.

🌐 New IoT Blocks Added

A new IoT category has been introduced, including:

Wi-Fi
BLE (with Nordic UART support)
MQTT

With these blocks, Mini R4 can easily connect to cloud services, mobile devices, and remote control systems—unlocking powerful IoT applications.

And soon in the next version we will provide support for features such as WiFi UDP and V7RC mobile phone remote control, so stay tuned!

🔥 New Block API Help System

The software now includes a brand-new API reference service.

Getting help is now easier than ever.Simply right-click any block to access its Block API help, including usage descriptions and guidance—perfect for both beginners and advanced users.

Don't know how to use these block? Don't understand how the sensor values work? Just right-click!

If needed, you can find the same on our GitHubDocumentation Portal: https://matrix-robotics.github.io/Programming-API-Docs/

📘 Built-in System & Structure Guidebooks

These comprehensive built-in references provide in-depth knowledge for learning, teaching, and developing with the Mini R4 platform.

R4 System GuideBook (200+ pages)
Structure Component GuideBook

If need lastest GuideBook, youn can find on our website: Download->GuideBooks

🟡 Line Tracer 10CH Sensor Support

New Line follow sensor going with MA321 MissionGo Set.

Now support for the 10-channel Line Tracer sensor has been added (for MA321 set), enabling more accurate line detection and improved performance on complex tracks.

Line Tracer 10CH is a advanced line follow sensor, the module features 10 light sensors and a built-in STM32 chip. Unlike normal sensors, it calculates the line information automatically and sends the result to your robot.

🔗 Native I²C Port Selection (I2C0 – Port A3)

All I²C sensors can now select I2C0 (Port A3, Pin Analog Channel 3) as the communication port. This is the native Arduino Uno R4 I²C interface and bypasses the multiplexer(PCA954X), very convenient for the users may need more I2C ports.

🔄 Enhanced DriveDC Motion Control

After we collect the user feedback, The DriveDC movement class has been expanded with:

Two-wheel gyro-based turning
Movement angle and rotation degree counting

These additions significantly improve motion precision and consistency for two-wheel drive robots, especially in competition scenarios.

🔧 Fixes & Improvements

Various minor bug fixes
Overall stability and performance improvements

Breaking Changes: NoneThis release is fully backward compatible with existing sketches.

Important Notice: Firmware Update is Required!

All software versions greater than v1.0.6 require firmware version 6.0 or higher.. Please go to File -> Firmware Update -> Download and update the firmware.