Notecarrier CX

Reduce development cost and complexity with a built-in host MCU.

  • Built for Rapid, Low-Cost Development

    • Notecarrier CX combines low unit cost, open-source designs that are easily integrated into any product, and an onboard MCU all-in-one.

      The built-in STM32L433-based microcontroller delivers an effective balance of ultra-low-power operation and performance. It’s ideal for taking battery-powered designs from early prototyping through scalable production deployments.

Tech Specs

Size

  • 76mm x 38mm 

Compatible Notecards

Onboard MCUs

  • STM32L433CCU6 Host MCU (80 MHz Clock, 256 KB Flash, 64KB of SRAM)

Switches

  • DIP switch for toggling USB-C access to Notecard or Onboard STM32 Host.
  • Onboard RST and BOOT buttons for onboard MCU ROM bootloader access and power reset. 

Connections

  • Notecard M.2 Key E connector socket and mounting screw standoff.
  • USB-C port to power Notecarrier and provide a USB Serial command interface to Notecard.
  • 1-Pin JST PH connector for LiPo battery power and charging support.
  • 1 Qwiic/StemmaQT I2C port for attaching external peripherals.
  • JTAG (SWD capable) debug jack. 

Product Integration

  • Castellated Edges for easy of pick-and-place installation in an end product.
  • External Nano-SIM slot for use of an optional secondary SIM. 

Which Notecarrier is right for me?

Discover the right Notecarrier for your host, power supply, and deployment stage.

  • Notecarrier F

    Best when using Feather-compatible MCU.

    • Computer Ram 1 Streamline Icon: https://streamlinehq.com computer-ram-1103mm x 51mm
    • Design Tool Quill Streamline Icon: https://streamlinehq.com Adafruit Feather-compatible
    • Antenna 2 Streamline Icon: https://streamlinehq.com antenna-2Bring Your Own Antenna
    • Two Qwiic I2C Ports
    • Solar Charging Car 3 Streamline Icon: https://streamlinehq.com solar-charging-car-3LiPo/Solar/V+
    • Usb Cable Streamline Icon: https://streamlinehq.com Micro USB
    • Sim Card Streamline Icon: https://streamlinehq.com sim-cardExternal Nano-SIM Socket for Additional Carriers
    • View Datasheet
  • Notecarrier Pi

    Best when using a Raspberry Pi-compatible SBC

    • Computer Ram 1 Streamline Icon: https://streamlinehq.com computer-ram-156mm x 61mm
    • Raspberry Pi Streamline Icon: https://streamlinehq.com Raspberry Pi
    • Antenna 2 Streamline Icon: https://streamlinehq.com antenna-2External Cellular/WiFi Antenna
    • One Grove I2C Port
    • Layers Stacked Streamline Icon: https://streamlinehq.com Pi HAT
    • Usb Cable Streamline Icon: https://streamlinehq.com Micro USB
    • Sim Card Streamline Icon: https://streamlinehq.com sim-cardExternal Nano-SIM Socket for Additional Carriers
    • View Datasheet
  • notecarrier-a MCU

    Notecarrier A

    Best when prototyping with any other MCU

    • Computer Ram 1 Streamline Icon: https://streamlinehq.com computer-ram-168mm x 75mm
    • Computer Chip Streamline Icon: https://streamlinehq.com computer-chipAny MCU
    • Monitor Antenna Streamline Icon: https://streamlinehq.com monitor-antennaEmbedded Antennas
    • Two Qwiic I2C Ports
    • Solar Charging Car 3 Streamline Icon: https://streamlinehq.com solar-charging-car-3LiPo/Solar/V+
    • Usb Cable Streamline Icon: https://streamlinehq.com USB-C
    • Sim Card Streamline Icon: https://streamlinehq.com sim-cardExternal Nano-SIM Socket for Additional Carriers
    • View Datasheet
  • Notecarrier X

    Best for small form factor deployments

    • Computer Ram 1 Streamline Icon: https://streamlinehq.com computer-ram-166mm x 38mm
    • Computer Chip Streamline Icon: https://streamlinehq.com computer-chipAny MCU
    • Antenna 2 Streamline Icon: https://streamlinehq.com antenna-2Bring Your Own Antenna
    • One Qwiic & One ESLOV I2C Port
    • Light Mode Flash On Streamline Icon: https://streamlinehq.com 2.5V-5.5V to V+
    • Usb Cable Streamline Icon: https://streamlinehq.com USB-C
    • Sim Card Streamline Icon: https://streamlinehq.com sim-cardExternal Nano-SIM Socket for Additional Carriers
    • View Datasheet

Frequently Asked Questions

The Notecard and its companion Notecarrier-Pi HAT support virtually any Raspberry Pi-compatible single-board computer (SBC) with a 40-pin male header connector. An example of a compatible SBCs is the balenaFin.

Note that due to the power requirements of the Notecard, some Raspberry Pi 2 and 3 models include a current-limiting fuse that will power-cycle the device when the Notecard’s modem is on and transmitting. To avoid these issues, we recommend using Raspberry Pi 4 devices with the Notecard and Notecarrier Pi HAT.

The Notecard, combined with the Notecarrier-A, is the easiest way to add cellular connectivity to your MCU-based IoT project. Blues provides a Feather Starter Kit that includes a Swan, a feather-compatible MCU, to get you started as quickly as possible. Alternatively, if you are invested in the Raspberry Pi platform you can use the Notecarrier Pi in your project.

No! The Notecard is a small 30mm x 35mm system on module (SoM) that is able to be embedded in any IoT project on its own via its M.2 edge connector.

However, Blues provides a variety of Notecarrier host boards for easily adding cellular connectivity to a new or existing IoT solution for prototyping purposes. The Notecarrier also provides antennae for both the GPS and cellular capabilities of the Notecard Cellular (and the cellular antenna is also compatible with the Wi-Fi enabled Notecards).

  • Notecard: SoM peripheral with a cellular modem, IMU sensor, GPS modem, with an M.2 edge connector.
  • Notecarrier: A prototyping board with cellular/Wi-Fi and GPS antennae, used to breakout the pins on the Notecard’s M.2 connector.
  • Notehub: A cloud service, used as a backend to connect with the Notecard. Notehub securely receives all data and communications created by the Notecard. In turn, Notehub can securely sync encrypted data with the cloud application of your choice using VPN tunnels which eliminates the need for traffic to traverse the public Internet.

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