Hands-on with the New PiSupply LoRa Gateway and The Things Network

Pre-release version of the PiSupply IoT LoRa Gateway HAT with a Raspberry Pi 3 Model B+. (📷: Alasdair Allan)

Assembling the Gateway

The contents of the box. (📷: Alasdair Allan)
Measuring the operating temperature of the Gateway with an laser thermometer. (📷: Alasdair Allan)

Getting the Software

Deploying to The Things Network

The Things Network Console.
Adding our gateway.
The gateway is connected! (📷: Alasdair Allan)
Our connected gateway.
The gateway live on The Things Network.

Creating an Application

Adding an application.

Registering a Device

Registering a device to an Application.
from network import LoRa
import ubinascii
lora = LoRa(mode=LoRa.LORAWAN)
print(ubinascii.hexlify(lora.mac()).upper().decode('utf-8'))

Writing the Software

Our device, we’ll need the Application EUI and Application Key.
from network import LoRa
import socket
import time
import ubinascii
import pycom
from pysense import Pysense
from LIS2HH12 import LIS2HH12
from SI7006A20 import SI7006A20
from LTR329ALS01 import LTR329ALS01
from MPL3115A2 import MPL3115A2,ALTITUDE,PRESSURE
off = 0x000000
red = 0x220000
green = 0x002200
blue = 0x000022
pycom.heartbeat(False)py = Pysense()
mp = MPL3115A2(py,mode=ALTITUDE) # Returns height in meters.
mpp = MPL3115A2(py,mode=PRESSURE) # Returns pressure in pascals
si = SI7006A20(py)
lt = LTR329ALS01(py)
li = LIS2HH12(py)
lora = LoRa(mode=LoRa.LORAWAN, region=LoRa.EU868)
app_eui = ubinascii.unhexlify(<APP_EUI>)
app_key = ubinascii.unhexlify(<APP_KEY>)
lora.join(activation=LoRa.OTAA, auth=(app_eui, app_key), timeout=0)
pycom.rgbled(red)
while not lora.has_joined():
print('Not joined yet...')
pycom.rgbled(off)
time.sleep(0.1)
pycom.rgbled(red)
time.sleep(2)
print('Joined')
pycom.rgbled(blue)
s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
s.setsockopt(socket.SOL_LORA, socket.SO_DR, 5)
s.setblocking(True)
i = 0
while True:
i = i + 1
temperature = str(si.temperature())
pressure = str(mpp.pressure())
humidity = str(si.humidity())
string = "{\"count\": %i,\"weather\":{\"t\": %s,\"p\": %s,\"h\": %s}}" % (i,temperature,pressure,humidity)
print(string)
s.send(string)
pycom.rgbled(green)
time.sleep(2.0)
pycom.rgbled(blue)
time.sleep(58.0)
A Pycom FiPy board (left) next to the Pi Supply Gateway (right). (📷: Alasdair Allan)
The logged data packets showing in our Application.

Adding a Decoder

function Decoder(bytes, port) {
return JSON.parse(String.fromCharCode.apply(null, bytes));
}
function Decoder(bytes, port) {
return { MyPacket: String.fromCharCode.apply(null, bytes) };
}
The data tab of the console, showing the decoded packet.

Adding an Integration

The Things Network offers a number of different integrations.
How to: Storage integration. (📹: The Things Network)
How to: HTTP Integration. (📹: The Things Network)

Conclusion

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Scientist, Author, Hacker, Maker, and Journalist.

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Alasdair Allan

Alasdair Allan

Scientist, Author, Hacker, Maker, and Journalist.

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