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I am a beginner. How can I learn to use the MATRIX Mini R4?

MATRIXblock software provides many basic examples suitable for beginners to learn robotics, including robot assembly diagrams and sample programs. If you have no idea about block programming, you can refer to the API description provided by MATRIX to learn the function of each block and how to use it in detail. API Instructions Link: https://matrix-robotics.github.io/Programming-API-Docs/#
I want to explore more advanced features. Where can I get more information?

Please refer to our official GitHub. We have made most of the libraries and documentation public and published them on the GitHub source code hosting platform. MATRIX Robotics GitHub Link: https://github.com/Matrix-Robotics
Why my program can't download into my robot?

1. Make sure you controller is boot up, and select correct device Port and Board (if using Arduino IDE). 2. Make sure you install the correct software, MATRIXblock Mini 2.0 for Mini 2.0 (R3, MR120, MR0001, MR3000...), MATRIXblock Mini R4 for Mini R4 (MA300, MAFI900).
After Compile/Verify, it shows error, how to fix?

Scroll up to see the result of compiler, it will shows where have error.
I write a program with movement, why motor is not moving?

Make sure your battery box is connected, battry installed correctly, and switch is ON. Make sure your battery is charged, have enough power. Make sure your power setting of motor is enough, if too low (like image below), robot can't move.
What is the RED/Green LED in the center of Mini R4 Controller Mean?

It's the battrey status LED, Green is battery good, Red is out of battery. You can config your battery setup at the setup block.
Does Matrix Mini R4 support WiFi/Bluetooth function?

Yes, the main controller of Matrix Mini R4 is Arduino Uno R4 WiFi, You can using WiFi or Bluetooth/BLE with it, for Arduino IDE you can find some example from Arduino website, for MATRIXblock, the wireless funtcion blocks are under developing.
Do we have any wireless method to download program without USB cable?

If you using with Arduino Cloud, you can using Arduino OTA to do that, for regular use, currently not support.
How can I update the controller firmware? Is it OK if I don't want to update?

Please refer to the following link for detailed steps to update the firmware. If the firmware is not updated, the main functions will basically not be affected, but some new functions may not be used or unexpected errors may occur. If the firmware is not updated to the latest version, the controller will automatically pop up a prompt after uploading the program to remind the user to update. Engineers are actively developing more new functions to make the Mini R4 controller more practical. It is recommended that you keep the latest firmware status at all times to ensure the user experience. Detailed instructions for updating firmware: https://www.matrixrobotics.com/sw-support/firmware-dfudevice
I want to using 3rd party sensors, how can I do?

Before using third-party sensors and motors, be sure to confirm whether their specifications match Mini R4. For detailed specifications, please refer to the Mini R4 datasheet. Confirm whether the sensor's communication method is IIC, Analog or Digital, and refer to the corresponding pins in the datasheet. If it is Analog and Digital signals, you can directly use the Mini R4's ready-made functions to read them. If it is an IIC sensor, connect the cable to A3 to using native IIC pins, or other IIC pin required channel selection.

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