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Adafruit IO

Adafruit IO for Meshtastic

Adafruit IO can be used to graph telemetry and messages from a Meshtastic network via json/mqtt. The following example script will listen for node packets and publish voltage, rssi, snr and messages to individual feeds on adafruit IO. If a feed doesn't exist it will be created. Be aware, however, that the free Adafruit account is limited to 10 feeds. Once your feeds are being populated with data you can create dashboards to display graphs and gauges with the data.

info

To utilize this script you need to have an Adafruit IO account, a working mqtt broker setup and a mesh node that is publishing to the mqtt broker.

You will need to modify the script with your Adafruit IO and mqtt credentials and mqtt publisher node id

# Persistent mqtt client, watch for voltage, teleme, message packets and publish them to io
# feeds will be created. free tier maxes out at 10

# Import Adafruit IO REST client.
from Adafruit_IO import Client, Feed, Data, RequestError
from datetime import datetime
import paho.mqtt.client as mqtt
import os
import sys
import json
import time
import random

import pytz
# set your timezone here
timezone = pytz.timezone("US/Hawaii")

# set your Adafruit IO creds here
AIO_USER = "tavdog"
AIO_KEY = "XXXXXXXXXXXXX"

# set your MQTT broker information
MQTT_SERVER = "XXXXXXXXXX"
MQTT_PORT = 1883 # default
MQTT_TOPIC_PREFIX = "mesh" # specified when you setup your node to publish mqtt
MQTT_USERNAME = "xxxxxxxxx"
MQTT_PASSWORD = "xxxxxxxxx"

# your node ID that is publishingn to the MQTT broker
MQTT_NODE_ID = "!387e0248"
# your channel (node must be set to json output)
MQTT_CHANNEL = "LongFast"

print("\n\n")
client_id = str(random.randint(0, 100))
mqttClient = mqtt.Client("python_mesh_client_%s" % client_id) # this needs to be kind of unique. mqtt broker will not allow duplicate connections.
mqttClient.username_pw_set(MQTT_USERNAME, MQTT_PASSWORD)
mqttClient.connect(MQTT_SERVER, MQTT_PORT)
mqttClient.loop_start()
print("Subscribing to %s/2/json/%s/%s" % (MQTT_TOPIC_PREFIX, MQTT_CHANNEL,MQTT_NODE_ID))
mqttClient.subscribe("%s/2/json/%s/%s" % (MQTT_TOPIC_PREFIX, MQTT_CHANNEL,MQTT_NODE_ID))
time.sleep(1)

# you can add more channels here
#mqttClient.subscribe("%s/2/json/MauiMesh/%s" % (MQTT_TOPIC_PREFIX, MQTT_NODE_ID))


aio = Client(AIO_USER, AIO_KEY)

node_db = dict()
# bootstrap your node_db here if you want. otherwise it will populate eventually but die on restart.
# node_db = { 634792740: 'Tavis Blue',
# 947782216: 'G1 Wailuku',
# 1839130823: 'Giggle Hill',
# 2330585902: 'Ayla Kekona',
# 634717328: 'Nani Hoku',
# 3667835576: 'Rachael'}

def get_feed(full_name,kind):
name = full_name.split('-')[0]
try:
feed = aio.feeds(f"mesh.{name.lower()}-{kind}")
except:
print("creating feed:" + kind)
# Create Feed
new_feed = Feed(name=f"{name}_{kind}")
feed = aio.create_feed(feed=new_feed,group_key="mesh")

return feed

def publish_rssi(data,metadata):
name = node_db[data['from']]
feed = get_feed(name,"rssi") # use a function here because we will create the feed if it doens't exist already.
print(feed.key + " \t\t: " + str(data['rssi']))
aio.send_data(feed.key, data['rssi'],metadata)

def publish_snr(data,metadata):
name = node_db[data['from']]
feed = get_feed(name,"snr") # use a function here because we will create the feed if it doens't exist already.
print(feed.key + " \t\t: " + str(data['snr']))
aio.send_data(feed.key, data['snr'],metadata)

def publish_voltage(data,metadata):
name = node_db[data['from']]
feed = get_feed(name,"voltage") # use a function here because we will create the feed if it doens't exist already. print(feed.key + " \t: " + str(data['payload'].get('voltage',"none")))
print(feed.key + " \t: " + str(data['payload']['voltage']))
aio.send_data(feed.key, data['payload'].get('voltage',0),metadata)

def publish_packet(data):

feed = aio.feeds("mesh.messages")
if (data['from'] in node_db):
data['fname'] = node_db[data['from']]
# trim down the data. we really only want to see the message content
trimmed = {
'from' : data.get('fname',None) or data.get('from'),
'message' : data['payload']['text'],
'stamp' : datetime.fromtimestamp(data['timestamp'],timezone).strftime('%Y-%m-%d %H:%M:%S'),
}
aio.send_data(feed.key, json.dumps(trimmed, indent=4))


def on_message(client, userdata, message):
print("\n")
print("message received " ,str(message.payload.decode("utf-8")))
print("\n")
data = json.loads(str(message.payload.decode("utf-8")))

# check the topic of the message
if data['type'] == "text":
# publish all message packets to the packet log
publish_packet(data)

# update node_db if needed
if data['type'] == 'nodeinfo':
# add to the node_db if we haven't seen it before
if data['from'] not in node_db:
node_db[data['from']] = data['payload']['shortname'] + '-' + data['payload']['longname']
print(str(node_db))
return # don't publish data from nodedb packets.

# "payload":{"altitude":113,"latitude_i":208759687,"longitude_i":-1565037665
metadata = None
if data['type'] == 'position':
metadata = {
'lat': data['payload']['latitude_i'] / 10000000, #40.726190,
'lon': data['payload']['longitude_i'] / 10000000, #-74.005334,
'ele': data['payload'].get('altitude',None),
'created_at': datetime.now(timezone),
}
# add to the node_db if we know who they are already


if data['from'] in node_db:
try:
if 'rssi' in data and data['rssi'] != 0:
# do the doings
publish_rssi( data, metadata )
if 'snr' in data and data['snr'] != 0:
publish_snr( data, metadata )
if 'payload' in data and data['payload'].get('voltage',0) != 0:
publish_voltage( data, metadata )
except Exception as e:
print("Error sending to IO:", str(e))


mqttClient.on_message = on_message

# loop forever
while(True):
pass