Visionary. Utilitarian.
6 layer Rogers/FR4 hybrid laminate stack, 10% impedance control, TI-AWR1642 RF-SoC, 2xTX + 4xRX mmWave antennas, Ultrasonic port, CC1200 wireless transceiver, CAN bus, UART…
Omniscient object detection.
Purpose:
This RF-SoC printed circuit board array is the most critical environmental sensor group on the LR-01. It features short range ultrasonic object detection as well as medium-long range RADAR object detection up to 200m effective. It also contains a CC1200 wireless transceiver for external short range communications.
Whole PCB with no copper fill present
Hole, via and thermal layer
Layer 1 copper
Layer 2 copper
Layer 3 copper
Layer 4 copper
Layer 5 copper
Layer 6 copper (inverted)
*Images above from first design revision
Update Q2 2021: Rendered bare PCB in Altium Designer, rerouted PCB and replaced most regulators with a PMIC, and Added LED array bar.
Main Parts Used
AWR1642
The Texas Instruments AWR1642 is a FMCW mmWave RADAR sensor integrating a DSP and MCU.
TC58CVG0S3HRAIG
The Kioxia America TC58CVG0S3HRAIG is a SPI NAND flash with a capacity of 1Gb (128MB x 8).
CC1200
The Texas Instruments CC1200 is a low power and high performance Sub-GHz wireless transceiver.
TLC59116
The Texas Instruments TLC59116 is a 16-bit RGBA constant current LED sink driver.
HDC2080
The Texas Instruments HDC2080 is an advanced humidity and temperature sensor with a built-in heating element to remove condensation and moisture.
TCA9555
The Texas Instruments TCA9555 is a 16-bit I2C GPIO expander IC.
BMX160
The Bosch BMX160 is a complex, low power inertial measurement unit providing precise acceleration, gyroscopic and magnetic data.
LM5140
The Texas Instruments LM5140 is a dual channel DC-DC synchronous buck controller featuring current mode control.