DJI RoboMaster TT Expansion Kit User Manual

DJI RoboMaster TT Expansion Kit

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Introduction

The RoboMaster Expansion Module (“the Expansion Module”) can be installed on the ROBOMASTERTM EP in conjunction with the AI Education Set. Users can program blocks with the Rogram platform on the DJITM Education Hub or program codes using the Python SDK to enable a wide range of AI applications on the RoboMaster EP.
The Expansion Module can also be used separately as an open source master control, by connecting a third-party sensor to the RoboMaster EP via the 14-Pin Expansion Port, to access more programming control applications.

Component Descriptions

Reset Button

• Short press to reset the Expansion Module.

microSD Card Slot

• Supports UHS-I memory cards with storage up to 32GB (hot swapping of microSD cards is not supported, which may damage files in the card). When used with the AI Education Set (“the AI module”), the Expansion Module can save video streams output by the AI module.

Micro USB Port

• a. When used with the AI module, the Expansion Module can be connected to the RoboMaster EP (“RMEP”) smart central control module through this port for the RMEP to access the AI module functions. See the AI Education Set User Manual for more details.
• b. When used with the AI module, the Expansion Module can be connected to a computer through this port and used as a USB driver-free camera. See the “Acquiring and Saving AI Core Module Video Streams” section for more details.

14-Pin Expansion Port

• a. The Expansion Module can be connected to the AI Education Set through this expansion port, or further connected to a third-party sensor via the pin header in the AI Education Set, to achieve module port expansion.
• b. The 14-Pin expansion port is defined as below.

Pin description

female connector

IO6| MISO| SPI data line
IO7| RX| UART receives RX
IO8| TX| UART sends TX
/| GND| Power ground
/| 5 V| 5V power supply

Each screen-printed mark on the pin header corresponds to the above table.

CAN Bus Port

The 12V power supply is plugged into the CAN Bus port. Connect to any CAN Bus port of RMEP using a CAN cable to power up the Expansion Module and communicate with the CAN on RMEP. When used with the AI module, this port must also be connected for the AI module functions to be accessible on RMEP. See the AI Education Set User Manual for details.

LED Indicator: The indicator statuses are described in the table below.

Blinking Pattern
Flashes once per second. Number of flashing LEDs represents the ID of the module: Normal
Three flashes per second. LEDs flash sequentially: Updating firmware

Custom Function Button

• a. The function of the button can be customized through programming. Functions include using the button to launch programs.
• b. When used with the AI module, the button can trigger the recording of AI module video streams. See the “Acquiring and Saving AI Core Module Video Streams” section for details.

100-Pin Expansion Port

• Reserved expansion port.

Dimensions

Using the Module

Installation
To use the AI functions, install the core module of the AI Education Set on the Expansion Module, and then install the Module on the RoboMaster EP (Note: The RoboMaster EP firmware must be upgraded to the 01.01.1125 or higher version).

1. Align the core module with and snap it into the notch of the Expansion Module. Then insert and press the core module firmly into the 14-pin expansion port.
2. Use a CAN cable to connect the CAN Bus port on the Expansion Module to any CAN Bus port on the RoboMaster EP. Use a double-ended micro USB cable to connect the micro USB port of the Expansion Module to the micro USB port of the smart central control module on the RoboMaster EP. Then fasten the Expansion Module on the RoboMaster EP gimbal using the threaded hole (M3) at the bottom of the Module. After the devices are connected, the user can acquire AI recognition results and program robot controls with the Python SDK or the Rogram editor of the DJI Education Hub, to run AI-related applications.

Acquiring and Saving AI Core Module Video Streams
Users can acquire images from the AI core module through the micro USB port of the Expansion Module. Connect the AI core module and the Expansion Module through the 14-pin expansion port, and connect the acquisition device (computers, laptops, mini PCs or other devices; the device must operate a system that supports UVC devices) using a micro USB cable. The Expansion Module will be recognized as a USB driver-free camera. In Windows 10, images can be acquired through the camera application that comes with the system. Click the custom function button to start local recording and save the AI module video stream to the microSD card. Click the custom function button again to stop recording.

Firmware Update
To perform a firmware update, users must download the RoboMaster app and link to the RoboMaster EP. Connect the Expansion Module and RoboMaster EP using a CAN cable or dual-end Mmcro USB cable. Then open the RoboMaster App and link to the RoboMaster EP on a mobile phone, tablet, computer, or other device. Go to Settings,

• System, and the Firmware Update page to perform the update.
• Refer to the RoboMaster S1 User Manual for the detailed steps.

Specifications

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References

• RoboMaster 机甲大师赛

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