Lora/GPS HAT: Raspberry Pi 2&3 LoRa Module By Dragino

  Raspberry Pi 2&3 LoRa/GPS HAT By Dragino 

   Today we will talk about Raspberry Pi, more specifically an expansion PCB module, adding the Long-Range Radio and GPS functionality in a well-known Single Board PC platform. 
   Let we present: Lora/GPS HAT By Dragino.   
   The main purpose of this product is for those who have an interest doing a LoRa WAN networks.
   LoRa/GPS Hat module uses Semtech SX1276/SX1278 Long Range 137 – 1020 MHz Radio Transceiver.

Long Range Radio Part:

  An integrated Semtech SX1276/SX1278 LoRa™ Transceivers provide ultra-long range spread spectrum communication with 150 dB – 168 dB Link Budget in high interference immunity, all that with a minimal power consumption. Used Modulation Techniques are providing remarkable selectivity, than the conventional ones. 

GPS Part: 

  Built-in GPS Module can calculate and predict orbits automatically. It uses the ephemeris’ data from last up to 3 days, buffered in an internal flash memory. That allows even indoor low-power operation. The Module also has automatic antenna detection and switching function between the internal and external active antenna. 

 




AMAZON.CO.UK Affiliate Link: Raspberry Pi Lora/GPS Hat

Raspberry Pi Lora/GPS HAT – Key Features:

  • Based on the SX1276/SX1278 transceiver,
  • +20 dB Constant RF Output – 100 mW,
  • Long range spread spectrum communication,
  • High interference immunity, 
  • LoRa™ WAN Modem
  • Available in three Frequency Bands:
    • 868 MHz,
    • 433 MHz,
    • 915 MHz.
  • Compatibility:
    • Raspberry Pi 2 Model B,
    • Raspberry Pi 3,
  • Modulation Types:
    • FSK, GFSK, MSK,
    • GMSK, LoRa™, and OOK modulation,
  • Configurable Baud-Rates,
  • Preamble detecting,
  • Automatic RF Sensing,
  • Extremely Fast AFC – Automatic Frequency Control, 
  • Integrated temperature sensor,
  • Low Battery Indicator with a configurable threshold level,
  • Support DGPS, SBAS (WAAS, EGNOS, MSAS, GAGAN), AGPS, 
  • GPS Module can switch automatically between internal and external active antenna,
  • SDK – Software Development KIT,
  • Integrated Low Noise Input Amplifier,
  • Built-in LNA for better sensitivity, 
  • GPS Automatic Antenna Detection,
  • EASY™ – AGPS technology, 
  • AlwaysLocate™ – Periodic Mode Intelligent Controller,
  • GPS FLP mode, using about 50% lower power consumption versus a normal mode,
  • Dimensions:
    • 4.7 x 3.1 x 1.2 inches,
  • Weight:
    • 3.5 ounces.

PIC. 1  LoRa / GPS HAT for Raspberry Pi 2 & 3

  Let we add few lines related to the technical parameters.

Raspberry Pi LoRa/GPS HAT – Technical Specifications:

LoRa Part Specification: 

  • Based on the SX1276/SX1278 transceiver,
  • High sensitivity: down to -148 dBm.
  • +20 dBm – 100 mW constant RF output, 
  • 168 dB max total communication link range.
  • 127 dB Dynamic Range RSSI. An Indicator of RF Field Strenght, 
  • In-System Programmable bit rate: up to 300 kbps.
  • Protected front-end circuit.
  • Low Receiver part current consumption: 10.3 mA, only 200 nA current for memorizing the register information.
  • Precision Programmable Frequency Synthesizer with 61 Hz-Step.
  • Implemented Bit synchronizer for self clock-recovery.
  • CRC Packet Controlling engine:
    • Size: Up to 256 bytes,
    • CRC: Yes, 
  • Built-in temperature sensor,
  • Built-in low-battery indicator.

GPS Part Specification:

  • L80 GPS – Based on MediaTek MT3339 GPS Module, 
  • GPS Power Consumption:
    • While trying the Acquisition: up to 25mA,
    • When is Tracking: up to 20mA.
  • L1 Band Receiving Part works at 1575.42 MHz,  
  • Tracking & Acquisition Channels: 22 / 66, 
  • Compliant with AGPS, DGPS /RTCM & SBAS,
  • UART Serial Interface:
    • Baudrate: 4800 to 115200 bps., 9600 bps – default,
  • Global Navigation Satellite System GNSS Low Power Operation,
  • Update rate: 1Hz to 10Hz. 
  • Protocols: PMTK, NMEA0183,
  • Horizontal Positioning Accuracy: <2.5 m, 
  • Dynamic Performance Altitude: 18,000 m max.,
  • Maximum Acceleration 4G.
  • Maximum Velocity Max. 515m/s, 
  • Sensitivity:
    • Acquisition -148dBm,
    • Reacquisition -160dBm,
    • Tracking -165dBm,
  • Accuracy: 
    • Velocity without aid<0.1m/s,
    • Acceleration without aid 0.1m/s².
  • Timings :
  • TTFF @-130dBm, Using EASY™:
    • Cold Start<15s.
    • Warm Start <5s.
    • Hot start <1s. 
  • Not Using EASY™:  
    • Cold Start<35s.
    • Warm Start <30s.
    • Hot start <1s. 
  • Accuracy:
    • 1PPS out 10ns,
  • Reacquisition Time:
    • Below 1 second.

See in the Package:

  • Lora/GPS HAT – 1 pcs.,
  • Antenna – 1 pcs.,
  • Screws – 4 pcs.,
  • Nuts – 4 pcs.,
  • Brass cylinders – 4 pcs.

 

 LoRa / GPS Hat For Raspberry Pi 2 & 3 By Dragino:

AMAZON.CO.UK Affiliate Link: Raspberry Pi Lora/GPS Hat

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AMAZON.CO.UK Affiliate Link: Raspberry Pi Lora/GPS Hat

 

Don’t Stop To Reinvent Yourself, Dear Hobby Enthusiasts!