產品說明1
※本產品原廠代理從國外進口，有些交期較長，下訂前請詢問！
Description
Grove is a very powerful platform developed by Seeed Studio to simplify your IoT projects.We have integrated the grove connector to most boards produced by Seeed to make them become a system. This time, we combined Grove with LoRa to provide an ultra-long-range wireless module for you.
The main functional module in Grove - LoRa Radio 868MHz is RFM95, which is a transceiver features the LoRa long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst mini-missing current consumption. The heart of Grove - LoRa Radio 868MHz is ATmega168, a widely used chip with very high-performance and low power consumption, especially suitable for this grove module.
There we already integrated a simple wire antenna to receive signal, if the signal is too weak to receive, don’t worry, the MHF connector next to the antenna is for adding a second antenna which has MHF interface to gain more signal.
This is the 868MHz version, which can be used for 868MHz communication. You can also find the version for 433MHz at Grove - LoRa Radio 433MHz.
Note
- Please keep the antenna vertical to the board and as straight as possible to make the best performance.
- Please avoid making any big metal object near the antenna and a metal cape is also not recommended if you need to add a cape for your device.
Features
- Using RFM95 module based on SX1276 LoRa®
- ~28mA(Avg) @+20dBm continuous transmit
- ~8.4mA(Avg)@standby mode
- ~20mA(Avg) @receive mode, BW-500kHz
- Simple wire antenna or MHF Connector for external high gain antenna
- +20dBm - 100 mW Power Output Capability
- Size: 20*40mm
Documents 參考說明
- For libraries and documents, please visit our Wiki page.
- For technical discussion, please come to our Forum.
- For projects that you would like to share with the community, please visit Recipe.
Technical Details
- Inputting voltage：5V / 3.3V
- Working Temperature：Working Temperature：-20 – 70℃
- Communication Interface：UART
- Working Frequency：868MHz
硬件概述
- ATMega168 MCU (datasheet)
- MHF Connector
- Wire Antenna
- RFM95 Module (datesheet)
- Grove Interface
TX ： TX of UART
RX ： RX of UART
VCC： Power supply, 3.3V or 5V
GND ： Connect Ground
連接硬件
Seeeduino Lotus is a combination of Seeeduino and Base Shield. We can connect the LoRa Radio module to the D5 socket directly as the below picture shows.
