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مستندات:
ارتباط ماژول lora با آردوینو
Description:
The RF part of LoRa_Kit is
based on the Semtech SX127x chip module, and the main control chip is
STM32L151CBU6. The product is positioned as a low power, cost effective
LoRaWAN solution evaluation board.
The SX1276/77/78/79 transceivers
feature the LoRaTM long range modem that provides ultra-long range
spread spectrum communication and high interference immunity whilst
minimizing current consumption.
LoRaTM also provides significant
advantages in both blocking and selectivity over conventional modulation
techniques, solving the traditional design compromise between range,
interference immunity and energy consumption.
LoRaWAN SX1278 Development board Applications:
Internet of Things
Meter concentrator
Industrial Control Concentrator
Security Alert System Gateway
LPWAN base station
Features:
MCU: STM32L151CBU6 (Ultra Low Power 32-bit MCU, cortex arm @ -m3)
LoRa: chip SX1278
On-board CP2102 USB to serial port chip (connected to 151's USART1) for easy debugging and programming (driver);
2
LED indicators: Orange: Power indicator (flashing – power on; long –
charging; off – charging completed), white: connected to PB8, high
level;
The RTC clock uses an external crystal of 32.768KHz;
Onboard
lithium battery charge and discharge management chip, can directly
charge lithium battery or use lithium battery to supply;
Complete STM32L151 Features: SPI, USART, IIC, GPIO, ADC…
Provide SDK development kits that support the LoRaWAN Class A/C protocol;
Maximum LoRa signal output power: 18 + -1db
12-bit ADC
DMA controller
28 universal GPIO
Flash: 128KB; 16k SRAM. 4 kb EEPROM block; Backup register 80B
Interface: Micro USB x1; LoRa Antenna (IPEX) x 1
Size: 57x27x7 mm
Battery type: lithium battery
Low power design: deep sleep: 6uA