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The B-L072Z-LRWAN1 LoRa/Sigfox Discovery kit is a development tool to learn and develop solutions based on LoRa, Sigfox, and FSK/OOK technologies. This Discovery kit features the all-in-one CMWX1ZZABZ-091 open module by Murata. The module is powered by an STM32L072CZ microcontroller and SX1276 transceiver.
The transceiver features the LoRa long-range modem, providing ultra-long-range spread-spectrum communication and high interference immunity, minimizing current consumption. Since CMWX1ZZABZ-091 is an open module, the user has access to all STM32L072CZ peripherals such as ADC, 16-bit timer, LP-UART, I2C, SPI, and USB 2.0 FS (supporting BCD and LPM).
The B-L072Z-LRWAN1 Discovery kit includes an ST-LINK/V2-1 embedded debug tool interface, LEDs, pushbuttons, antenna, Arduino Uno V3 connectors and USB OTG connector in Micro-B format. The LoRaWAN stack supports Class A, Class B, and Class C. It is available in the I-CUBE-LRWAN firmware package. Several examples, including an AT-command stack, are available to help users set up a complete LoRaWAN node.
The Sigfox stack is RC1, RC2, RC3c, and RC4 compliant. It is available in the X-CUBE-SFOX Expansion Package. Several examples, including an AT-command modem, are also available to help users set up a complete Sigfox node.
Features :
– Embedded ultra-low-power STM32L072CZ MCU, based on ArmCortex- M0+ core, with 192 Kbytes of Flash memory, 20 Kbytes of RAM, 20 Kbytes of EEPROM
– Frequency range: 860 MHz – 930 MHz
– USB 2.0 FS
– 4-channel,12-bit ADC, 2 × DAC
– 6-bit timers, LP-UART, I2C and SPI
– Embedded SX1276 transceiver
– LoRa, FSK, GFSK, MSK, GMSK, and OOK modulations (+ Sigfox compatibility)
– +14 dBm or +20 dBm selectable output power
– 157 dB maximum link budget
– Programmable bit rate up to 300 kbit/s
– High sensitivity: down to -137 dBm
– Bullet-proof front end: IIP3 = -12.5 dBm
– 89 dB blocking immunity
– Low Rx current of 10 mA, 200 nA register retention
– Fully integrated synthesizer with a resolution of 61 Hz
– Built-in bit synchronizer for clock recovery
– Sync word recognition
– Preamble detection
– 127 dB+ dynamic range RSSI
– LoRaWAN Class A certified
- SMA and U.FL RF interface connectors
- Including 50-ohm SMA RF antenna
- 7 LEDs:
– 4 general-purpose LEDs
– 5 V power LED
– ST-LINK-communication LED
– Fault-power LED
- 1 user and 1 reset push-buttons
- On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
- Arduino Uno V3 connectors
- Board power supply through the USB bus or external VIN/3.3 V supply voltage or batteries
- 3 × AAA-type battery holder for standalone operation
