I am trying to see if I can build a GPS-based tracking system that leverages LoRa. The initial setup that is working uses a Adafruit Feather M0 with RFM95 LoRa Radio and an Adafruit Ultimate GPS FeatherWing as the transmitter. This transmits to an Adafruit RFM95W LoRa Radio Transceiver Breakout connected via SPI to an Arduino Duemilanove which is in turn connected via USB to a Raspberry Pi Zero as the receiver. I am seeing with just a wire antenna(7.8 cm soldered to the ANT pad) on the receiver for LoRa seeing a range of 90+ meters semi-obstructed. Battery life of over 13 hours on a 3000mAh LiPo battery.
Parts List
Adafruit Ultimate GPS FeatherWing
Adafruit Feather M0 with RFM95 LoRa Radio - 900MHz
Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit
Antennas GPS Antenna 3-5V 28dB 5 meter SMA
Arduino Duemilanove
Rasberry Pi Zero
Not working RPi wiring
Board Label
Board pin
Jumper Color
RPi Pin
Rpi Label
Note
3v
1
red
17
gnd
2
black
25
gnd
en
3
g0
4
grey
7
#define RF_IRQ_PIN RPI_V2_GPIO_P1_07 // IRQ on GPIO4 so P1 connector pin #7
sck
5
green
23
sclk
miso
6
yellow
19
miso
mosi
7
orange
21
mosi
cs
8
blue
22
#define RF_CS_PIN RPI_V2_GPIO_P1_22 // Slave Select on GPIO25 so P1 connector pin #22
rst
9
white
11
#define RF_RST_PIN RPI_V2_GPIO_P1_11 // Reset on GPIO17 so P1 connector pin #11
Traccar server + Tilestache map tile server + Maperitive-produced OpenStreetmap .MB map tiles + traccar-web client portal + flask for grabbing some client portal features
