Evalkits r4

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SiRad MIMO r2 SiRad MIMO SiRad Easy® r4 SiRad Easy® SiRad Simple® Eval Boards
24 GHz MIMO r2 Schraege.png Mimo website 24 ghz.PNG Evaluation-Evalkits-Easy r4-TRA 120 002.PNG Easy with lens.jpg Simple.jpg EvalBoard TRX 024 006 007.PNG

1 Requirements & First Steps

1.1 System Requirements

Evaluation-Evalkits-Easy r4-TRA 120 002.PNG


  • Microsoft Windows 10 (supported) OR Microsoft Windows 7 (not supported anymore)
  • 1 GB free HDD / SSD space
  • micro USB to type A cable
  • FTDI Chip USB driver (VCP) [1]


  • active USB hub with at least 1000mA output current - some radar front ends need more power than provided by USB ports(!)
  • 8 GB RAM or more

1.2 Software Requirements

Graphical User Interface (WebGUI):

  • Java - compatibility matrix [2]
  • Mozilla Firefox - compatibility matrix [3]
  • Com2WebSocket / WebGUI software by Silicon Radar [4]

For firmware updates over UART / USB:

  • ST-LINK USB driver (STSW-LINK009) [5]
  • STM32CubeProgrammer [6]

For firmware updates with an external debugger, without SiRad Easy r4 Breakout Board:

  • Debugger: STLINK-V3MINI [7]
  • micro USB to type A cable
  • ST-LINK USB driver (STSW-LINK009) [8]
  • ST-LINK Utility (STSW-LINK004) [9]

For firmware updates with external debugger and SiRad Easy r4 Breakout Board:

  • Debugger: STLINK-V3MINI [10] OR STM32 Nucleo-64 development board [11]
  • micro USB to type A cable (STLINK-V3MINI) OR mini USB to type A cable (Nucleo-64)
  • (Nucleo-64 only) 6pin jumper cable (female-female) OR self-made programming cable
  • ST-LINK USB driver (STSW-LINK009) [12]
  • ST-LINK Utility (STSW-LINK004) [13]

1.3 Recommended Software

2 Hardware

  • Accessories List [18]
  • TRA_120_002 SiRad front end datasheet [19]
  • TRX_120_001 SiRad front end datasheet [20]

2.1 Data Connection via USB Cable (USB Mode)

  • Connect a USB cable (micro B to type A), A LED will light up to show that the board is powered and working
  • In some cases, the ST-LINK USB Driver may not work, if an additional COM port number cannot be seen in the device manager after the Evaluation Kit has connected, installing a different Virtual COM Port Driver, which is mentioned in the requirements, could be the solution.

Please see Evalkits r4 #Software section to find detailed information about how to connect EvalKit ( Silicon Radar WebGUI or terminal program). If you want to proceed with Silicon Radar WebGUI, you can consider WebGUI section or if you want to continue with a terminal program you can follow Terminal.

2.2 Mounting the Lens (Optional)

Please see lens datasheet [26] for more information.

3 Software/Firmware

Sirad Easy r4 has an FMCW firmware, WebGUI, and MATLAB & Octave script in the download area. Please visit Customer Download Area to see the available software/firmware of the SiRad Easy r4 Evaluation kit.

3.1 Firmware

If you have any question about how to update and flash firmware please see the below links:

For the detailed information of SiRad Easy r4 FMCW firmware for instance how to configure Raw ADC mode, types of protocol, changing radar parameters, please see this site:

How to tune and speed up the SiRad Evaluation kit, please visit:

3.2 WebGUI

The SiRad Easy ® Evaluation Kit is developed to demonstrate the functionality of Silicon Radar’s transceiver chips as millimeter-wave distance and velocity sensor front ends.

3.3 Terminal Program

You can use a terminal program to send the command strings and log measurement data, for more information :

3.4 MATLAB & Octave

A description of how you can set up and import raw ADC data into MATLAB & Octave can be found here:


Not able to find your problem here or your problem not solved by the above suggestions? We strongly suggest you read the FAQs, Protocol Description, and User Guides (in the download area) as they can be the answer to most of your questions.