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Stratus Cellular Kit Overview

Board Layout

Conexio Stratus V1.0 top view.
Conexio Stratus V1.0 bottom view.

Technical specifications and features

Most of the specifications outlined below are based on Nordic's nRF9160 Product Specification.
MCU: Nordic nRF9160 Microcontroller with ARM Cortex M33
  • 1MB Flash
  • 256kB RAM
  • ARM® TrustZone®
  • ARM® Cryptocell 310
  • Up to 4x SPI, I2C, and UART with Easy DMA
  • I2S w/ EasyDMA
  • 4x PWM with EasyDMA
  • 12bit SADC with EasyDMA
  • 2x RTC
  • PPI (Programmable peripheral interconnect) interface
  • Modem
    • Transceiver and baseband
    • 3GPP LTE release 13 Category M1 and NB1 compliant
    • 3GPP release 14 NB2 compliant
    • GPS receiver (GPS L1 C/A supported) - Active antenna only.
    • RF Transceiver for global coverage supporting bands:
      • Cat-M1: B1, B2, B3, B4, B5, B8, B12, B13, B14, B17, B18, B19, B20, B25, B26, B28, B66
      • Cat-NB1/NB2: B1, B2, B3, B4, B5, B8, B12, B13, B17, B18, B20, B25, B26, B28, B66
    • Supports 4FF Nano SIM
  • Pre-programmed MCUBoot bootloader
USB-C
  • For USB-to-Serial, DFU, and application firmware programming and debugging plus LiPo battery charging
Energy harvester IC
  • AEM10941 solar energy harvester from E-peas Semiconductors
  • Vin: 50 mV to 5 V
  • Cold start: 3 μW @ 380 mV
  • Power input: 3 μW to 550 mW
  • Maximum power point tracking (MPPT)
  • Supports battery types Li-ion and NiMH
  • Max solar panels: up to 7 solar cells simultaneously
Board power supply
  • 3.3V Buck/Boost up to 0.9A of current draw
  • Operating range 2.8 to 5.5V
  • External LiPo battery connection (2 Pin JST type)
  • Charge rate set to 300mA with RED LED indication
  • Maximum output current: 800mA
Debugger & Programmer
  • Supports J-Link and CMSIS-DAP-based programmers
  • 10-pin 0.05" (1.27mm) pin connector
User I/O
  • 32 Standard GPIOs (0.1" pitch)
  • 26 user-programmable GPIOs
  • 2 x push buttons (1 Reset, 1 General Purpose connected to P0.12)
  • 1 x user-programmable Green LED connected to D7 (P0.03)
Antenna connections
  • 1 x U.FL for LTE-M/NB-IoT with matching network
  • 1 x U.FL for active GPS antenna
Onboard sensors
  • Latest SHT4x temperature and humidity sensor from Sensirion
  • ST Microelectronics LIS2DH MEMS digital output motion sensor: ultra-low-power high-performance 3-axis Femto accelerometer
Power switch
  • SPDT slide switch for turning ON/OFF the power to the Stratus board
Physical
  • 50.8mm x 22.86mm (2.0" x 0.9")
  • Weight: ~5 grams.

Stratus Shield

For expansion and interfacing various sensors and hardware peripherals, Conexio Stratus also comes with a shield (which can be purchased separately).
Forget about breadboard and soldering iron, working with a Straus shield requires no soldering and minimal wiring. Just plug the sensors, actuators, or displays into this shield via the standard cables, allowing you to focus on coding and application creation. Isn't that cool!
The shield supports:
  • 1 x mikro BUS: add-on board standard from Mikroe, allowing to connect over 800+ click boards.
  • 2 x Sparkfun Qwiic connector: SparkFun's Qwiic Connect System, allows connecting over 100+ Qwiic products.
  • 1 x Grove I2C connector: Grove is a modular, standardized connector prototyping system by Seeedstudio.
  • 1 x 2 Pin JST connector for plugging the solar panel input.
Stratus Shield without Main board.
Shield with Conexio Stratus plugged-in.

What's included in the box

Congratulations on receiving your Conexio Stratus kit. Your package includes:
  • 1 x Conexio Stratus dev kit.
  • 1 x 1NCE IoT Sim card
  • 1 x Getting started instructions card