Cytron Shield-lora-rfm User manual

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Product User’s Manual – LoRa Shield

Cytron RFM LoRa Shield

SHIELD-LORA-RFM

User's Manual

V1.0

March 2017

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Product User’s Manual – LoRa Shield

Index

1. Introduction 3

2. Packing List 4

3. Board or Product Layout 5

4. Dimension 7

5. Hardware Installation 8

6. Getting Started 10

7. Warranty 12

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Product User’s Manual – LoRa Shield

1.0 INTRODUCTION

RFM LoRa Shield is an Arduino shield which integrates RFM95W LoRa module and based

on Open Source Library with any Arduino projects. It is compatible with Arduino Uno ,

Arduino Duemilanove , Arduino Mega2560 , Arduino Leonardo and possibly other pin

compatible main boards.

RFM Lora Shield allows users 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, and targets professional wireless sensor network

applications such as irrigation systems, smart metering, smart cities, smartphone detection,

building automation, etc.

Using LoRa

TM modulation technique, RFM 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.

Besides supporting high performance (G)FSK modes for systems including WMBus and

IEEE802.15.4g, RFM Lora Shield also deliver exceptional phase noise, selectivity, receiver

linearity and IIP3 for significantly lower current consumption than competing devices.

LoRa shield has stackable side headers which allows more Arduino-compatible shields to be

stacked on top of it. It also has built in grove sensors connectors which allows users to

integrate grove-based sensors into their application. It has also provided option for user to

integrate OLED with this shield for visual display.

* This is LoRa Radio Shield, the shield itself does not contain LoRaWAN, the Arduino

controller board (UNO, Mega, Leonardo, etc) will need to have LoRaWAN stack.

Features:

●Integrated with RFM95W LoRa module operating in the 915 MHz frequency band.

●High Receiver Sensitivity: down to -146 dBm.

●TX Power: adjustable up to +14 dBm high efficiency PA.

●FSK, GFSK, MSK, GMSK, LoRa

and OOK modulation.

●Low RX current of 10.3 mA, 200 nA register retention.

●The shield comes with:

○1 x SMA 90 deg antenna connector

○1 x U.FL SMD antenna connector

○1 x single through hole for wire antenna

●Interface via SPI with Arduino main board.

●3 Grove connectors for sensors or other grove-compatible devices.

●Option for OLED installment

●Suitable for low power wireless sensor network applications such as irrigation

systems, smart metering, smart cities, smartphone detection, building automation, etc.

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Product User’s Manual – LoRa Shield

2.0 PACKING LIST

Please check the parts and components according to the packing lists. If there are any parts

missing, please contact us at [email protected] immediately.

1. 1 x LoRa Shield

2. 1 x SMA antenna 915MHz 50ohm

3. 1 x pigtail for U.FL antenna

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Product User’s Manual – LoRa Shield

3.0 BOARD OR PRODUCT LAYOUT

1. Stackable Digital I/O header

This header pin is Digital I/O pin stacked to the Arduino main board. Other Arduino shield

can be stacked on top of this stackable header.

2. Stackable Analog Input pin header

This header pin is Analog Input pin stacked to the Arduino main board. Other Arduino shield

can be stacked on top of this stackable header.

3. Arduino Reset button

Reset button is for convenience of user to reset the Arduino main board.

4. Grove Connectors

Connectors for grove sensors or other grove-compatible devices. 1st grove (from bottom) are

connected to A0 and A1, 2nd D8 and D9 and 3rd for I2C pins.

5. Slot for OLED installment

Optional slot for users to install OLED for visual display in their application.

6. RFM95W LoRa Module

Low-Power Long Range Transceiver operating in the 915 MHz frequency band. Complies

with the LoRaWAN Class A protocol specifications, and integrates RF, a baseband controller,

command Application Programming Interface (API) processor, making it a complete long

range solution.

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Product User’s Manual – LoRa Shield

7. SMA 90 deg Antenna Connector

Connector for SMA Antenna. By default it comes with Antenna 915MHz 50ohm.

8. Through Hole Antenna Connector

A single through hole for wire antenna. User may choose to solder the hole with wire

antenna.

9. U.FL SMD Antenna Connector

Connector for U.FL SMD Antenna. User may choose to connect it with pigtail and antenna.

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Product User’s Manual – LoRa Shield

4.0 DIMENSION

 
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Product   User’s   Manual   –   LoRa   Shield  
 
5.0   HARDWARE   INSTALLATION 
 
This section will show example installation of LoRa-RFM-Shield with  Arduino Uno as a                        
main controller. Besides Arduino Uno, other Arduino main boards such as  Arduino                       
Duemilanove ,  CT-UNO ,  Arduino Mega2560 ,  CIKU and  CT-ARM are also compatible with                      
this   shield.   
 
5.1   Arduino   Uno  
 
Arduino is an open-source physical computing platform based on a simple I/O board and a                             
development environment that implements the Processing/Wiring language. LoRa Shield can                   
be used together with Arduino Uno. Figure below shows example hardware connection                       
between Arduino Uno and LoRa Shield; it is simply stacking up the shield onto the Arduino                               
main   board.  
 
1. Stack   LoRa   Shield   on    Arduino   Uno .   Ensure   that   the   pins   alignment   is   correct.  
 
2. Install   antenna   as   shown   in   the   picture   below. 
 
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