Taiwan

Arduino LoRa 擴展板 – Dragino LoRa  866M frequency Arduino 專用 Lora  擴展版
Dragino LORA擴展板 是一個專門為 Arduino 所設計的 Lora 功能 擴展板 , Lora 擴展板基於開放源碼庫，允許用戶發送數據，達到極長的範圍在低 data-rates.it 提供超遠距離擴頻通信和高抗干擾性的同時儘量減少電流消耗。
Dragino LoRa 擴展板基於 rfm98w 目標專業的無線感測器網路應用如灌溉系統、智慧電錶、智慧都市、智慧檢測、大樓間自動化範圍等等。
使用RF專利LORA™調製技術的LORA盾可以達到使用低成本的晶體和材料清單超過-148dBm的靈敏度。高靈敏度與集成+20 dBm的功率放大收益率行業領先的鏈路預算使得它最適合於要求範圍或穩健性的應用程序相結合。LORA™還提供了阻塞和選擇性，比傳統的調製技術顯著的優勢，解決範圍，抗干擾性和能量消耗之間的傳統設計折中。
相容於Arduino Leonardo, Uno, Mega, DUE
Frequency Band: 868 MHZ
Lora,long range transceiver on a Arduino shield
External Antenna via I-Pex connector
原廠技術文件與函數庫 
Arduino LoRa 擴展板 Description
The Dragino LoRa Shield is a long range transceiver on a Arduino shield form factor and based on Open source library.The LoRa Shield allows the user to send data and reach extremely long ranges at low data-rates.It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.
The LoRa Shield based on RFM98W targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
Using Hope RF’s patented LoRa™ modulation technique the LoRa Shield can achieve a sensitivity of over -148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRa™ 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.
These devices also support high performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The LoRa Shield deliver exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices.
FEATURES
    • Compatible with 3.3v or 5v I/O Arduino Board.
    • Frequency Band: 868 MHZ/433 MHZ (Pre-configure in factory)
    • Low power consumption
    • Compatible with Arduino Leonardo, Uno, Mega, DUE
    • External Antenna via I-Pex connector
SPECIFICATION
    • 168 dB maximum link budget.
    • +20 dBm – 100 mW constant RF output vs.
    • +14 dBm high efficiency PA.
    • Programmable bit rate up to 300 kbps.
    • High sensitivity: down to -148 dBm.
    • Bullet-proof front end: IIP3 = -12.5 dBm.
    • Excellent blocking immunity.
    • Low RX current of 10.3 mA, 200 nA register retention.
    • Fully integrated synthesizer with a resolution of 61 Hz.
    • FSK, GFSK, MSK, GMSK, LoRa™ and OOK modulation.
    • Built-in bit synchronizer for clock recovery.
    • Preamble detection.
    • 127 dB Dynamic Range RSSI.
    • Automatic RF Sense and CAD with ultra-fast AFC.
    • Packet engine up to 256 bytes with CRC.
    • Built-in temperature sensor and low battery indicator.
PART LIST
    • 1 x LoRa