ThatGuyJack/RPI-DHT11
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Jack 2021-08-07 18:24:13 +01:00
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854
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13
dht11.service Normal file
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[Unit]
Description=Python DHT11 Grafana Script
After=network.target
[Service]
Type=simple
Restart=on-failure
User=ubuntu
ExecStart=/usr/bin/python3 /home/ubuntu/dht11/sensor-iot.py
WorkingDirectory=/home/ubuntu/dht11
[Install]
WantedBy=multi-user.target

113
sensor-iot.py Normal file
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import time
import requests
import configparser
import Adafruit_DHT
from influxdb import InfluxDBClient
# Configuration File
CONFIG_FILE = "settings.conf"
def get_reading(config):
# InfluxDB connection info
host = "192.168.5.16"
port = "8086"
user = "jack"
password = "Jack32145"
dbname = "roomtemp"
# Create the InfluxDB client object
client = InfluxDBClient(host, port, user, password, dbname)
# Sensor details
#sensor = str(config['sensor_settings']['sensor'])
sensor = Adafruit_DHT.DHT11
sensor_gpio = "4"
measurement = "dht11"
location = "Jacks Room"
humidity, celcius = Adafruit_DHT.read_retry(sensor, sensor_gpio)
# Add Farhenheit for us 'Mericans
farhenheit = celcius * 9 / 5 + 32
# Structure Timestamp to UTC
current_time = time.gmtime()
timestamp = time.strftime('%Y-%m-%dT%H:%M:%SZ', current_time)
# Structure the data for write
data = [
{
"measurement": measurement,
"tags": {
"location": location,
},
"time": timestamp,
"fields": {
"temperature_c": celcius,
"temperature_f": farhenheit,
"humidity": humidity
}
}
]
# Write it!
client.write_points(data)
# Return the temperature value.
return float(data[0]['fields']['temperature_f'])
#def post_alert(config, trigger, value):
# # IFTTT Webhook Info
# ifttt_url = "https://maker.ifttt.com/trigger/{}/with/key/"
# ifttt_key = config['alerting_settings']['ifttt_key']
# 'value' will be sent to IFTTT and can be included in alert
# data = {"value1": value}
# Pass in event name to trigger appropriately
# ifttt_event_url = ifttt_url.format(trigger) + ifttt_key
# Post it!
# requests.post(ifttt_event_url, json=data)
def read_config():
cfg = configparser.ConfigParser()#
# Read the config
cfg.read(CONFIG_FILE)
# Read the Values from the config
config = {section: {k: v for k, v in cfg.items(section)} for section in cfg.sections()}
# Return the config
# return config
def main():
# Initial threshold counter.
# threshold_counter = []
# Read the config
config = read_config()
while True:
# Get the reading and send to Influx
current_temperature = get_reading(config)
# If temp is higher than threshold, Append to counter
# if current_temperature > float(config['alerting_settings']['temperature_threshold_high']) or current_temperature < float(config['alerting_settings']['temperature_threshold_low']):
# threshold_counter.append(current_temperature)
# If we hit threshold_count, alert and reset.
# This prevents us from alerting every temperature check
# if len(threshold_counter) == int(config['alerting_settings']['threshold_count']):
# temperature_alert = config['alerting_settings']['ifttt_event_name']
# post_alert(config, temperature_alert, current_temperature)
# Reset counter
# threshold_counter = []
# Sleep the interval
time.sleep(int(2))
if __name__ == '__main__':
main()