Stratus (Gen 1) Overview
nRF9160 + AEM10941
Board Layout
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.
What's included in the box
Congratulations on receiving your Conexio Stratus kit. Your package includes:
Hardware
1 x Conexio Stratus dev kit.
1 x 1NCE IoT Sim card
1 x Getting started instructions card
Preloaded Firmware
Out-of-the-box, Stratus kit comes with the pre-loaded firmware that periodically samples all the onboard sensors (temperature, humidity, accelerometer, and battery) and blinks the LEDs.
To view the serial logs, start your favorite serial terminal such as putty or CoolTerm, set the baud rate to 115200 and you should see the following output:
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