The Dragino Lora/GPS HAT is an expansion module for LoRaWan and GPS uses with the Raspberry Pi. This product is intended for those interested in developing LoRaWAN solutions.
The Lora/GPS HAT is based on the SX1276/SX1278 transceiver. The add on L80 GPS (Base on MTK MT3339) is designed for applications that use a GPS connected via the serial ports to the Raspberry Pi such as timing applications or general applications that require GPS information.
The transceivers of the Lora/GPS HAT feature the LoRa⢠long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. The Lora/GPD HAT 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.
This board can calculate and predict orbits automatically using the ephemeris data (up to 3 days) stored in internal flash memory, so the HAT can fix position quickly even at indoor signal levels with low power consumption. With AlwaysLocate⢠technology, the Lora/GPS HAT can adaptively adjust the on/off time to achieve balance between positioning accuracy and power consumption according to the environmental and motion conditions. The GPS also supports automatic antenna switching function. It can achieve the switching between internal patch antenna and external active antenna.Moreover, it keeps positioning during the switching process.
Features
Frequency Band: 868 MHZ/433 MHZ/915 MHZ(Pre-configure in factory)
Compatible with Raspberry Pi 2 Model B/Raspberry Pi 3.
LoRa⢠Modem
FSK, GFSK, MSK, GMSK, LoRaâ¢and OOK modulation
Preamble detection
Baud rate configurable
Built-in temperature sensor and low battery indicator
Excellent blocking immunity
Automatic RF Sense and CAD with ultra-fast AFC
Support DGPS, SBAS(WAAS/EGNOS/MSAS/GAGAN)
GPS automatic switching between internal patch antenna and external active antenna
PPS VS. NMEA can be used in time service
Support SDK command
Built-in LNA for better sensitivity
EASYâ¢, advanced AGPS technology without external memory
AlwaysLocateâ¢, an intelligent controller of periodic mode
GPS FLP mode, about 50% power consumption of normal mode
GPS support short circuit protection and antenna detection
Specifications
Lora Spec:
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.
GPS Spec:
Power Acquisition: 25mA,Power Tracking:20mA.
Compliant with GPS, SBAS.
Programmable bit rate up to 300 kbps.
Serial Interfaces UART: Adjustable 4800~115200 bps,Default: 9600bps.
Update rate:1Hz (Default), up to10Hz.
Protocols:NMEA 0183,PMTK.
Horizontal Position Accuracy:Autonomous<2.5 m CEP.
TTFF@-130dBm with EASYâ¢:Cold Start<15s,Warm Start <5s,Hot start <1s;TTFF@-130dBm.
without EASYâ¢:Cold Start<35s,Warm Start <30s,Hot Start <1s.
Timing Accuracy:1PPS out 10nsï¼Reacquisition Time<1s.
Velocity Accuracy Without aid<0.1m/s,Acceleration Accuracy Without aid 0.1m/s².
Sensitivity Acquisition -148dBmï¼Tracking -165dBmï¼Reacquisition -160dBm.
Dynamic Performance Altitude Max.18000mï¼Maximum Velocity Max.515m/sï¼Maximum Acceleration 4G.
L1 Band Receiver(1575.42MHz) Channel 22 (Tracking) /66 (Acquisition).
Part List
1x Lora/GPS HAT
4x Brass cylinders
4x Screws
4x Nuts
1x Glue Stick Antenna(868 MHZ)
Documents
Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials.
Exact shipping can be calculated on the view cart page (no login required).
Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).
We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):
Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.
Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.
International Orders - the following rates are for New Zealand and will vary for other countries:
If you order lots of gear, the postage amount will increase based on the weight of your order.
Our physical address (here's a PDF which includes other key business details):
Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia
Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.
Have a product question? We're here to help!
Makers love reviews as much as you do, please follow this link to review the products you have purchased.
Product Comments