Radar Click Board™

Product Code: MIKROE-5183

How Does The Radar Click Board™ Work? The Radar Click Board™ as its foundation uses the MM5D91-00, a presence detection sensor module with an integrated mmWave technology from Jorjin Technologies Inc. It counts the number of people entering or exiting an entrance, simplifies the implementation of mmWave sensors in the band of 61.0 to 61.5GHz, and includes the ARM Cortex-M4F-based processor system 1Tx 3Rx antenna and onboard regulator. This Click board™ is built to demonstrate the function of the entrance counter of the 60GHz radar sensor with its sophisticated radar presence detection algorithms. Characterized by low power consumption and high resolution, this board represents a suitable solution for various presence sensing applications, from office and home to commercial buildings and more. Its detection range goes up to 10m for macro motion, representing human movements, and 5m for micro motion, which stands for stationary human (normal breathing and blinking eyes) in sitting or standing positions with no active signs for at least 30 seconds.

Immune to environmental factors such as temperature, wind, sunlight, and dust/debris, the MM5D91-00 also comes with azimuth and elevation field of view of ±45° and ±40°. The MM5D91-00 communicates with MCU using the UART interface with the default baud rate of 115200bps for the data transfer. In addition, it also uses several mikroBUS™ pins. An active-low reset signal routed on the RST pin of the mikroBUS™ socket activates a hardware reset of the radar module. It also has three general-purpose pins, routed to the AN, PWM, and INT pins of the mikroBUS™ socket marked as GP2, GP1, and GP0 to signal an essential change in device status, alongside its green, red, and blue LED indicators. Green LED stands for active presence indication, while red LED represents non-presence indication. Blue LED serves for bootloader mode indication. The Radar Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Motion Applications Can be used for various presence sensing applications, from office and home to commercial buildings and more On-board modules MM5D91-00 - presence detection sensor module from Jorjin Technologies Inc Key Features Integrated mmWave technology, low power consumption, high resolution, adjustable detection range, immune to environmental factors, up to 10m/5m for macro/micro motion, and more Interface UART Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout on Radar Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes General Purpose 2 GP2 1 AN PWM 16 GP1 General Purpose 1 Reset RST 2 RST INT 15 GP0 General Purpose 0 NC 3 CS RX 14 TX UART TX NC 4 SCK TX 13 RX UART RX NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 GP0 - Presence LED Indicator LD2 GP1 - Non-Presence LED Indicator LD3 GP2 - Bootloader Mode LED Indicator