Introduction

RAK2245 Pi HAT is a module with Raspberry PI form factor. It can be plugged into Raspberry PI such as Raspberry Pi 3 Model B+ as a complete RF front end of LoRa gateway. This module supports eight channels and is available different variants for global frequency bands. The board is an ultra-compact module which measures only 60mm x 30mm x 14.9mm, inclusive of GPS module and heat sink; this is the smallest LoRaWAN gateway module available in the market. RAK2245 can provide low data rate LoRa radio links in ultra-fast speed. It is powered by a Semtech SX1301 transceiver concentrator that is capable of managing packets from many remotely dispersed end-points. Two Semtech SX125X are integrated for RF front end I/Q transceivers. The RAK2245 Pi HAT is a complete and cost efficient LoRa gateway solution that can help you develop a full LoRa system. This is an economical way to create different solutions like smart grid, intelligent farm and other IoT applications. It is also ideal for manufacturing small series that can expand into more applications.

Main Features

Compatible with Raspberry Pi 3 Model B+ edition.
SX1301 base band processor, emulates 49 x LoRa demodulators 10 parallel demodulation paths, support 8 uplinks channel, 1 downlink channel. 
2 x SX125x Tx/Rx front-ends high/ low frequency. 
Supports 5V power supply, integrated level conversion circuit. 
TX power up to 27dBm, RX sensitivity down to -139dBm@SF12, BW 125KHz. 
Supports latest LoRaWAN 1.0.2 protocol. 
Supports global license-free frequency band (EU433, CN470, EU868, US915, AS923, AU915, KR920, IN865 and AS920). 
Supports SPI interface. 
Integrated the Ublox MAX-7Q GPS Module.

Key Fetures:

PIN Definition

Useful Link:

User manual

• RAK2245_Pi_Hat_User_Manual_V1.2.pdf
• RAK2245_Pi_Hat_Product_Brief_V1.1.pdf

Hardware-Specification

• RAK2245_RAK831_Design_Guide_Comparison.pdf

• RAK2245_pwb.dxf

open source code link:

Here is the open source code link: https://github.com/RAKWireless/RAK2245-LoRaGateway-RPi-LoRa-Gateway-OS