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Functional DescriptionPackage ConfigurationPower InformationGPS (GNSS) Antenna RequirementsHeader DescriptionsSpecificationsOrdering InformationDesign FilesTerms and ConditionsRevision HistoryContact Information
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homechevron_rightDocschevron_rightDatasheetschevron_rightNotecarrier Datasheet - Notecarrier XS v1.1

Blues Notecarrier® Datasheet: Notecarrier XS v1.1

Companion development boards for easy prototyping and deployment.

Notecarriers are available in several form-factors to facilitate rapid prototyping. Depending upon the variant, a Notecarrier may be designed with direct host integration, size optimization, integrated cellular/Wi-Fi and GNSS antennas, or even to be soldered directly into a solution for low-volume production.

Functional Description

Notecarriers are designed to bridge the gap between prototype and production for the Notecard. The Notecard is designed to be socketed directly onto the circuit board using an edge connector socket, along with a customer's MCU, sensors, and controls. While such a model provides a highly modular configuration for the final product, it can make prototyping unnecessarily difficult.

Notecarriers offer breakout connections for the Notecard, as well as circuitry to provide power management, protection and signal amplification.

Features

  • Simple. Provides breadboard compatible pins or solderable mask for direct connections.
  • Compatible. Level shifters ensure compatibility with 3.3V or 5V equipment.
  • Convenient. Powered by a USB connector (requires 2A supply).
  • GPS Ready. Models are either active GPS compatible, or feature a built-in antenna to enable GNSS connectivity.

Compatible Notecards

Since the Notecarrier XS v1.1 is designed to be used with Starnote for satellite connectivity, the Notecarrier XS v1.1 is only compatible with the following Notecards:

  • Notecard Cell+WiFi
  • Notecard Cellular
  • Notecard Cellular (Legacy)
  • Notecard WiFi
warning

When using a green Notecard Cellular (Legacy) device with Notecarrier XS, the shield over the modem can touch the VGPS_OUT pad, initiating a short. This may cause the Notecard VMODEM regulator to heat up and not generate enough voltage to enable the modem.

This issue has been mitigated with conformal coating or Kapton tape. We recommend not removing the Kapton tape if using Notecarrier XS with a green Notecard Cellular (Legacy).

Notecarrier XS v1.2 with Kapton tape

Package Configuration

Notecarrier XS (Satellite) v1.1

Notecarrier XS (CARR-XS) is the companion Notecarrier for Starnote and Notecard, providing a platform for prototyping with Satellite failover.

View in Store

FrontBack
Notecarrier XS v1.1 (front)Notecarrier XS v1.1 (back)
  • Notecard and Starnote edge connector sockets and mounting screw receptacles .

  • USB-C port to power Notecarrier and provide a USB Serial command interface to Notecard.

  • Requires separate user-provided U.FL cellular/Wi-Fi antennas for Notecard and Starnote.

  • Requires a separate user-provided U.FL passive GPS antenna for Starnote and an optional U.FL passive GPS antenna for Notecard. See this note about using an active GPS antenna with Notecarrier XS.

  • JST PH connector for a LiPo battery.

  • Qwiic connector for connecting I2C peripherals.

  • ESLOV connector for connecting I2C peripherals. ESLOV exposes an additional GPIO pin which is connected to the Notecard's ATTN pin.

  • LiPo charging circuit.

  • External Nano-SIM slot for use of an optional secondary SIM.

  • PCB Dimensions: 78mm x 66mm

  • Center of Mounting Holes: 73.5mm x 62mm (corners) and 43mm x 62mm (middle) (measured from the edge of the PCB to the center of the furthest mounting hole)

Power Information

All Notecarriers can be powered by connecting directly to the USB port. However, most installations will not have USB power available, so several alternate power options are provided by the various Notecarrier models:

  • attaching a LiPo battery.

    The LiPo battery must be a single-cell 3.7V battery with a 2-pin JST PH connector.

  • applying 2.5-5.5VDC to the VBAT or VMAIN pins.

    Commonly provided via DC power supply or non-rechargeable battery.

warning

Typical USB ports may only be capable of supplying 500 mA of current, which might not be enough to power Notecard during a cellular connection to a GSM network (which can spike to 2A). In this situation, you're advised to supplement power to your Notecarrier with an external source (e.g. a LiPo battery).

GPS (GNSS) Antenna Requirements

All Notecarrier models are designed to support active GPS, and several Notecarrier models provide built-in antennas ready to be connected to a Cellular Notecard using the included U.FL cables.

Enabling Active GPS

If using Notecarrier XS v1.1 with an active GPS antenna, add a 0-Ohm 0603 jumper to the unpopulated spot between VGPS_OUT and VGPS_IN. This will power an active GPS LNA with a 3.8VDC bias voltage on the center conductor of its GPS U.FL connector.

enabling active gps on notecarrier xs

Header Descriptions

Notecarrier XS v1.1 Dual 16-pin Headers

Pin NameDirectionUsageUsageDirectionPin Name
GNDINGroundDirect connect to the + pin of the battery connectorIN/OUTVBAT
AUX_TXOUTHigh-speed diagnostic interfaceDirect connect to VUSB pin of the USB connectorIN/OUTVUSB
AUX_RXINHigh-speed diagnostic interfaceDiode union of VUSB and VBAT sourcesOUTVMAIN
AUX_ENINEnable diagnosticsDigital I/O voltage source with 100mA availableOUTVIO
AUX4IN/OUTAPI-selectable modes of operationAccess to Notecard boot pinINBOOT
AUX3IN/OUTAPI-selectable modes of operationFor development use only: MUST normally be NC or High Impedance and must never be pulled to GND. A VIO-level pulse of >250ms will reset the NotecardINNRST
AUX2IN/OUTAPI-selectable modes of operationActive LOW when charging attached LiPoOUTNCHG
AUX1IN/OUTAPI-selectable modes of operationFor On/Off switching of customer product. Leave NC or connect to a physical switch or Open Drain output. Notecard will be OFF if pulled to GND. Never apply positive voltage to this pin.INEN
ATTNOUTConfigurable interrupt signalActive antenna GPS 3.8V from NotecardOUTVGPS_OUT
CTXINClear to transmitActive antenna GPS bias voltageINVGPS_IN
RTXOUTRequest to transmitActive LOW when ALTDFU is activeOUTIDLE
TXOUTUART serial transmit request interfaceAllows Notecard to toggle host active LOW reset pin ALTDFUINNRST
RXINUART serial receive request interface (Notecard has onboard 10K pull-up resistors)Allows Notecard to toggle host BOOT pin ALTDFUINBOOT
SCLIN/OUTI2C clock request interface (Notecard has onboard 10K pull-up resistors)UART serial transmit request interface, specifically used to program the host MCU. ALTDFUOUTTX
SDAIN/OUTI2C data request interface (Notecard has onboard 10K pull-up resistors)UART serial transmit request interface, specifically used to program the host MCU. ALTDFUINRX
GNDINGroundGroundINGND

Specifications

Electrical Characteristics

DC Characteristics

DescriptionMinimumMaximumUnit
Supply Voltage2.55.5V
Supply Current5002000mA

Absolute Maximum Ratings

DescriptionMinimumMaximumUnit
Storage temperature-3570°C
note

Actual values may vary based on local conditions such as atmospheric conditions and distance to the cell tower.

Ordering Information

  • Notecarriers
  • Development Kits

Design Files

Open source hardware designs for all Notecarriers are maintained in the note-hardware GitHub repository.

Terms and Conditions

Visit Blues Hardware Terms & Conditions .

Revision History

AuthorDateSummary
Ray Ozzie2019-2020Document drafted
John Wiedey2020Various improvements
Sean Taylor2020Various improvements
Zachary J. Fields01 OCT 2020Updated information and translated to markdown
Brandon Satrom04 JAN 2021Added link to design resources
Greg Wolff13 JAN 2021Added BAT pin information to Notecarrier AF datasheet
Brandon Satrom07 APR 2022Added Notecarrier A information
Zachary J. Fields20 JUL 2022Added Notecarrier F information
Zachary J. Fields24 OCT 2022Added Notecarrier B v2 information
Rob Lauer28 OCT 2022Added versioning for Notecarrier B v1/v2
TJ VanToll05 JAN 2023Added Notecard Outboard Firmware Update information
Rob Lauer28 FEB 2023Re-labeling Notecarrier B as "Basic"
Rob Lauer01 MAR 2023Added PCB/Mounting Hole Dimensions
Rob Lauer07 SEP 2023Added Notecarrier F v1.3 information
Rob Lauer16 NOV 2023Added Notecarrier Pi v2.0 information
Rob Lauer14 MAR 2024Added Notecarrier B v3.1 and Notecarrier R v1.0 information
Rob Lauer05 JUN 2024Added Notecarrier XS v1.1 information
Rob Lauer10 JUN 2024Added KiCad schematics to A, B, F, and Pi Notecarriers
Rob Lauer18 JUL 2024Added Notecarrier XS v1.2 information
Rob Lauer22 JUL 2024Updated Notecarrier pin descriptions
TJ VanToll19 AUG 2024Added Notecarrier X v1.2, XM 1.2, and XP 3.1 information

Contact Information

Blues Inc.
https://blues.com
50 Dunham Ridge Suite 1650
Beverly, MA 01915
support@blues.com

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