u-blox XPLR-AOA-3, User Manual

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UBX-22006906 - R03 Page 23 of 44
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5 C209 tag
The C209 is a tag based on the NINA-B406 Bluetooth LE module. The tag runs software that sends
Bluetooth 5.1 advertisement messages to the ANT-B10 antenna board, which determine the
direction of the tag using the u-connectLocate software. See also
C209 tag .
☞
C209 is an example implementation of a tag, which is not optimized nor available as a separate
product.
5.1 Overview
The C209 provides a versatile beacon example that is suitable for use as an AoA tag. It is advisable to
test ANT-B10 boards together with C209 tags and pre-loaded C209 tag software
[12] .
Figure 21: C209 tag in open plastic enclosure
C209 tags are based on the open CPU NINA-B406 module variant. C209 tags run on custom tag
software that advertises an Eddystone beacon using extended advertising and periodic advertising
with a Constant Tone Extension added to the periodic advertising packets . This CTE is used by the
u-connectLocate direction finding software that runs on the antenna application board and calculates
the Angle of Arrival.
The namespace included in the transmitted Eddystone-UID beacon is
0x4E494E412D4234544147
and
the instance ID is based on the MAC address of the NINA-B406 found on the module QR code label.
C209 tags are powered by a single CR2032 battery (
not included) or through the USB connector.
C209 tags include several sensors for use in a multitude of different applications. The on-board
sensors include:
• LIS2DW12 accelerometer
• APDS-9306 ambient light sensor
• BME280 humidity, pressure, and temperature sensor