24GHz Radar Sensor CAN Protocols Hareware Connection and Test

15 Jun

24GHz Radar Sensor CAN Protocols Hareware Connection and Test

NRA24/MR72 CAN Radar Hardware Connection Guide

To verify the CAN communication function and data output of the MR72 millimeter-wave radar, a simple CAN bus test setup is required. By connecting the MR72 radar to a PC through a USB-to-CAN adapter, users can monitor radar data, perform parameter debugging, and validate CAN communication.

Required Equipment

MR72 CAN Millimeter-Wave Radar ×1
USB-to-CAN Adapter (USBCAN) ×1
Windows PC ×1
12V DC Power Supply ×1
CAN Bus Testing Software ×1
Connection Wires and Accessories

Hardware Connections

According to the MR72 harness definition:

Red Wire (DC12V): Connect to the positive terminal of the power supply
Black Wire (GND): Connect to the negative terminal (ground)
Yellow Wire (CAN_H): Connect to the CAN_H terminal of the USBCAN adapter
White Wire (CAN_L): Connect to the CAN_L terminal of the USBCAN adapter

Follow the steps below:

Connect the MR72 red wire to the +12V DC power supply.
Connect the MR72 black wire to the power supply ground (GND).
Connect the MR72 yellow wire to the CAN_H terminal of the USBCAN adapter.
Connect the MR72 white wire to the CAN_L terminal of the USBCAN adapter.
Connect the USBCAN adapter to the PC via a USB cable.
Turn on the 12V power supply to power the radar.
Launch the CAN bus testing software and set the CAN baud rate to 500 kbps.

Notes

The MR72 radar supports a wide input voltage range of 5V to 28V DC, while a stable 12V DC power supply is recommended for testing. The CAN interface operates at 500 kbps high-speed CAN, and CAN_H/CAN_L wiring must be connected correctly to ensure reliable communication.

For accurate performance evaluation, testing should be conducted in an open outdoor environment whenever possible. Indoor environments may introduce millimeter-wave multipath reflections, which can affect measurement accuracy. Once the hardware connection is completed, users can monitor real-time radar data such as target distance, relative speed, and obstacle detection information through the CAN software, providing a foundation for flight controller integration and application development.