Tracker One(008)

Tracker One

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 6-30V 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 90V 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.


Block Diagram

Block Diagram


Labeled Diagram
Num ID Description
1 GNSS Antenna
2 Wi-Fi Antenna (mounted on side of case)
3 NFC Antenna (mounted on lid) 1
4 Power and I/O connector (B8B-PH)
5 BLE Antenna (mounted on side of case)
6 LiPo Connector
7 M8 8-pin male connector (mounted on side of case)
8 USB-C2
9 NFC connector (connects to NFC antenna on lid)
10 RGB Status LED
12 CHRG LiPo charge status LED
13 USER User Button
15 MODE MODE button
16 Cellular Antenna (mounted on side of case)
17 USB-C switch3
18 Thermistor
19 JTAG connector (not populated)4

1When disassembling the Tracker One, be careful when removing the lid. The NFC antenna and LiPo battery are mounted on the lid, and the NFC antenna cable is short. Carefully remove the NFC U.FL connector before fully removing the lid of the case. Reconnect to (9).

2The USB-C connector is normally connected to the nRF52840 MCU. It can be connected to the GNSS module by using the USB-C switch (17).

3The normal state is 1-4 OFF and 5-6 ON to connect the USB to the nRF52840. To connect the USB-C to the u-blox GNSS, turn 1-4 ON and 5-6 OFF. Disconnect the USB-C and the LiPo battery before changing the switch settings.

4The JTAG connector is not populated at the factory. The connector is a Samtec FTSH-105-01-F-DV-K 10 position (2x5), 1.27mm pitch.

Power and I/O Connector (M8)

M8 Pin Function Function Function I/O Color
1 CAN_P IO2 Yellow
2 VIN3 I Red
3 Analog A3 GPIO D3 IO1 White
4 Serial1 RX Wire3 SDA GPIO D8 IO1 Green
5 Serial1 TX Wire3 SCL GPIO D9 IO1 Brown
6 CAN_5V4 CAN_PWR O Orange
7 CAN_N IO2 Blue
8 GND Black

The IP67 M8, 8-pin, male pins with threaded barrel connector is accessible from the outside of the enclosure.

M8 connector

View as looking into the M8 connector on the outside of the enclosure.

Note: Version 003 and earlier of this datasheet had a different pin numbering for M8 connector that didn't match the connector manufacturer's numbering. Only the numbering has changed; the function of the pin at a given location is unchanged and the change should not affect existing designs.

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.

36.0 to 30 VDC at 2A when using the M8 connector. 6.0 - 90 VDC at 2A when connecting directly to the board.

45V, 400 mA maximum. Controlled by the CAN_PWR GPIO.

Additional information on M8 cables and connectors can be found in the M8 Accessories Datasheet.

Carrier Board Power and I/O Connector

The connector on the carrier board itself is is a JST B8B-PH-SM4-TB(LF)(SN), 8-position, 2mm pitch, male pins, shrouded. The mating connector is the JST PHR-8. The female sockets are available plain, with leads, and in pre-manufactured ribbon cable formats.

PHR-8 Pin M8 Pin Function Color
1 2 VIN Red
2 1 CAN_P Yellow
3 7 CAN_N Blue
4 6 CAN_5V Orange
5 5 TX_SCL_D9 Brown
6 4 TX_SDA_D8 Green
7 3 A3 White
8 8 GND Black

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, GPIO D9, Wire3 SCL
MCU RX RX MCU serial RX, GPIO D8, Wire3 SDA

Note: While the USER button exists inside the Tracker One, the Tracker One is a sealed unit and opening it will void the warranty and may affect certifications, thus it is not practical to use. It can be used with the Tracker Carrier Board.

Powering the Tracker Carrier Board

There are several options for powering the carrier board:

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

The VIN connector (6 to 30 VDC at 2A on the M8 connector, or 6 to 90 VDC at 2A to the B8B-PH connector on the board). This is useful with an external power supply.

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

USB connector

There is a single USB C connector on the carrier board. On the Tracker One, this exits the enclosure and is IP67 rated.

A set of DIP switches on the carrier board allow this port to be connected to either the MCU (normal) or u-blox GNSS (for firmware updates). The normal state is 1-4 OFF and 5-6 ON to connect the USB to the nRF52840. To connect the USB-C to the u-blox GNSS, turn 1-4 ON and 5-6 OFF. Disconnect the USB-C and the LiPo battery before changing the switch settings.

LED Indicators

The RGB LED default behavior is:

  • Red breathing: Attempting to connect to the cellular network
  • Yellow breathing: Connecting to the cloud, weaker cellular signal
  • Green breathing: Connecting to the cloud, good cellular signal
  • Yellow solid: Connected to the cloud, weaker cellular signal
  • Green solid: Connected to the cloud, good cellular signal

Alternatively the LED can be configured to the typical Particle color scheme (blinking green, blinking cyan, breathing cyan) via device or cloud configuration. Custom device firmware can provide other color schemes if desired.

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:

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


Antenna Location
GNSS Carrier Board (faces top of case)
Wi-Fi Left Side
BLE Left Side
Cellular Right Side

Tracker One Antennas

As the GNSS antenna faces the top of the case, you also want the top of the case facing the sky to the greatest extent possible. You will likely be be unable to get a GNSS lock with the top facing down.

Tracker One Schematics

Will be provided at a later date.

Peripheral Details


The Tracker Carrier Board contains a 100K NTC thermistor, connected to A0. It is a Panasonic ERT-J1VR104FM connected high-side.


It can be read using the getTemperature() API.

Mechanical specifications

Dimensions and weight

Parameter Value Units
Width 88 mm
Length (case only) 146 mm
Length (including M8 connector) 154 mm
Thickness 33 mm
Weight g

Weight will be provided at a later date.

Case Dimensions (mm):

Case Dimensions


Case Bottom

Maximum Carrier Board Dimensions (mm):

Carrier Board Dimensions

Note: The Tracker Carrier Board has a smaller bottom tab to provide space for the M8 connector.

Product Handling

ESD Precautions

The Tracker SoM contains highly sensitive electronic circuitry and is an Electrostatic Sensitive Device (ESD). Handling an module without proper ESD protection may destroy or damage it permanently. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates the module. ESD precautions should be implemented on the application board where the B series is mounted. Failure to observe these precautions can result in severe damage to the module!



This device must be treated as Waste Electrical & Electronic Equipment (WEEE) when disposed of.

Any WEEE marked waste products must not be mixed with general household waste, but kept separate for the treatment, recovery and recycling of the materials used. For proper treatment, recovery and recycling; please take all WEEE marked waste to your Local Authority Civic waste site, where it will be accepted free of charge. If all consumers dispose of Waste Electrical & Electronic Equipment correctly, they will be helping to save valuable resources and preventing any potential negative effects upon human health and the environment of any hazardous materials that the waste may contain.

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 2020 Apr 20 RK Preview Release1
pre2 2020 May 12 RK Added partial dimensions
001 2020 Jun 29 RK First release
002 2020 Jun 30 RK CAN 5V is limited to 400 mA, not 500 mA
003 2020 Jul 16 RK Corrected M8 pinouts
004 2020 Aug 06 RK Corrected M8 pin numbering
005 2020 Aug 09 RK Updated VIN voltages
006 2020 Aug 10 RK Updated carrier board diagram
007 2020 Sep 01 RK Added antenna diagram
008 2020 Sep 08 RK Corrected USB connector description