Tracker One(pre2)

This is a preliminary datasheet and is subject to change


The Tracker One is a ready-to-go Tracker SoM carrier board with optional weatherproof enclosure.

  • Ready to go with IP67-rated enclosure.
  • GNSS Antenna Onboard: convenient high-gain GNSS antenna for easy access to GNSS signals.
  • Flexible Power Supply: easily add asset tracking to most devices. A wide 4.5-30V power supply copes with most power delivery systems. Also accepts 5V supply via USB-C. LiPo battery connector, charge LED, backup battery for GPS and battery-backed RTC. Supports up to 105V when connecting directly to the carrier board.
  • High-precision Thermistor with accuracy to 1%.
  • Extensible: IP67-rated M8 connector includes CAN Bus, UART, GPIO, and power for simple expansion.
  • USB-C for flashing, debugging and power with higher charging rates than Micro-USB or for use without an internal battery.
  • RGB LED for use as both a user-configurable device as well as Particle status information.
  • Backup Battery for RTC and GNSS.

Top and Bottom

Block Diagram

Block Diagram


Num ID Description
1 J1 Power and I/O connector
2 RTC Battery
3 LiPo Connector
5 RGB Status LED
6 USER User Button
9 MODE MODE button
10 CHRG LiPo charge status LED
11 NFC
12 JTAG/SWD debugging connector for nRF52 MCU
13 GNSS USB u-blox GNSS USB connection (Micro USB)
14 GNSS Antenna
15 LiPo Battery
16 Tracker SoM (on back side)

Power and I/O Connector (M8)

M8 Pin Function Function Function I/O
1 VIN3 I
4 CAN+ IO2
5 CAN- IO2
6 Serial1 TX Wire3 SCL GPIO D9 IO1
7 Serial1 RX Wire3 SDA GPIO D8 IO1
8 Analog A3 GPIO D3 IO1

This connector attaches to the IP67 M8 connector, accessible from the outside of the enclosure. The connector on the Tracker One enclosure has male pins and a barrel threaded on the outside.

1MCU GPIO is limited to 3.3V maximum.

2CAN Bus specifications can be found in the Tracker SoM datasheet. CAN Bus termination is provided on the carrier board.

34.5 to 30 VDC when using the M8 connector. 4.5 - 105 VDC when connecting directly to the board.

45V, 500 mA maximum. Controlled by the CAN_PWR GPIO.

M8 connector

Additional Peripherals

Signal Device OS Description
THERM A0 NTC Thermistor
USER A1 USER button
GNSS_LOCK A2 GNSS lock indicator
GPIO1 A3 GPIO on power and I/O connector
MCU TX TX MCU serial TX or GPIO D9
MCU RX RX MCU serial RX or GPIO D8

Powering the Tracker Carrier Board

There are several options for powering the evaluation board:

The MCU USB connector (USB-C). If using a laptop with a 500 mA USB port, you should also use the LiPo battery. With a 2A tablet charger, you can power only by USB.

The VIN connector (5-30 VDC). This is useful with an external power supply.

The LiPo connector. This is typically used with a LiPo battery.

USB connectors

There are two USB connectors on the carrier board, however you most commonly will only use the MCU USB connector.

The MCU USB connector is connected to the nRF52 MCU and can be used for Serial debugging, flashing code, and setup by USB. It can also power the AssetTracker SoM. If using a laptop with a 500 mA USB port, you should also use the LiPo battery. With a 2A tablet charger, you can power only by USB.

The GNSS USB connector is connected to the u-blox NEO-M8U GNSS. It can be used for firmware upgrades or with the u-blox u-center application.

LED Indicators

The RGB LED default behavior is to display cellular signal quality:

  • Red blinking: Attempting to connect to the cellular network
  • Red: poor cellular signal
  • Yellow: average cellular signal
  • Green: good cellular signal

It will fast blink when connecting to the cellular network, and slow blink when connecting to the Particle cloud. This behavior can be overridden by custom application firmware.

The CHRG LED indicates the charge status:

  • Off: Not charging or no power
  • On: Charging
  • Blinking: Charge fault
  • Flickering: No battery

The GNSS LED indicates the GNSS fix status:

  • Blinking (1 Hz): Attempting to get a GNSS fix
  • On: Has a GNSS fix.

Basic Setup

Will be provided at a later date.

Evaluation Board Schematics

Will be provided at a later date.

Mechanical specifications

Dimensions and weight

Parameter Value Units
Width 88 mm
Length (case only) 145 mm
Length (including M8 connector) 154 mm
Thickness 36 mm
Weight g

Weight will be provided at a later date.

Ordering Information

SKU Description Packaging
ONE402M Tracker One LTE M1/2G (NorAm), [x1] Each
ONE523M Tracker One LTE CAT1/3G/2G (Europe), [x1] Each
TCAR Tracker Carrier Board, [x1] Each

Revision history

Revision Date Author Comments
pre1 20 Apr 2020 RK Preview Release1
pre2 12 May 2020 RK Added partial dimensions