DRAGINO LSN50-EU868-12 LoRa Sensor Node
Overview
The LSN50 LoRa sensor node is a long-range LoRa sensor node. It is designed for outdoor use and is powered by a Li/SOCl2 battery for long-term use.LSN50 is designed to help developers quickly deploy LoRa and IoT solutions at an industrial level. It helps users turn the idea into a practical application and make the Internet of Things a reality. It's easy to program, create and connect your things anywhere.
The wireless part of the LSN50 is based on SX1276/SX1278 and allows the user to send data and achieve extremely long ranges at low data rates. It provides ultra-long range spread spectrum communication with high interference immunity with minimal power consumption. It aims at professional wireless sensor network applications such as irrigation systems, smart metering systems, smart cities, smartphone detection, building automation, etc.
The LSN50 MCU part uses ST's STM32l0x chip, STML0x is the STM32L072xx ultra-low-power microcontroller, which combines the connectivity performance of the universal serial bus (USB 2.0 crystal-free) with the high-performance 32-bit RISC core ARM ® Cortex®-M0+, operating at a frequency of 32 MHz, a memory protection unit (MPU), embedded high-speed memories (192 Kbytes of flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM), as well as an extensive range of
advanced I/Os and Peripherals.
LSN50 is an open source product, it is based on the STM32Cube HAL drivers and many libraries can be found on the ST site for rapid development.
FeaturesSTM32L072CZT6 MCU SX1276/78 LoRa wireless modem preloading with ISP bootloader I2C,LPUSART1,USB 18 x digital I/Os 2 x 12bit ADC 1 x 12bit DAC MCU wake-up by UART or interrupt LoRa™ modem preamble detection Baud rate configurable LoRaWAN 1.0. 2 Specification Software based on STM32Cube HAL drivers Open source hardware/software Available band: 433/868/915/920 Mhz IP66 Waterproof case Ultra-low power consumption AT commands for setting parameters 4000mAh battery for long-term use Applications Wireless alarm and Security systems Home and building automation Automatic meter reading Industrial monitoring and control Long distance irrigation systems, etc. LoRa specifications168 dB maximum link budget. +20 dBm - 100 mW constant RF output power versus +14 dBm high efficiency PA. Programmable bit rate up to 300 kbps. High sensitivity: up to -148 dBm. Bulletproof front end: IIP3 = -12.5 dBm. Excellent blocking resistance. Low RX current of 10.3mA, 200nA register hold. Fully integrated synthesizer with 61 Hz resolution. FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation. Built-in bit synchronizer for clock recovery. Preamble detection. 127 dB dynamic range RSSI. Automatic RF detection and CAD with ultra-fast AFC. Packet engine up to 256 bytes with CRC. Built-in temperature sensor and low battery indicator. MUC SpecificationsMCU: STM32L072CZT6 Flash:192KB SRAM:20KB EEPROM:6KB Clock Speed: 32Mhz Absolute Maximum RatingsVCC: 0.5v ~ 3.9v Operating Temperature: -40 ~ 85°CI/O pins: 0.5v ~ VCC+0.5V Common DC CharacteristicsSupply Voltage : 1.8v ~ 3.6v Operating Temperature: -40 ~ 85°CI/O pins: Refer STM32L072CZT6 datasheet Power ConsumptionSTOP Mode: 2.7µA @ 3.3v RX Mode: 7.2mA TX Mode: 125mA@ 20dbm BatteryLi/SOCI2 unchargable battery Capacity: 4000mAh Self Discharge: Max continuously current: 130mA Max boost current: 2A, 1 second Scope of delivery1 x Dragino LSN50-EU868