Home-Temp-Monitoring

esp8266, dht22, python3 script to pull date, add to db, and dashboard to view

Getting Started

Hardware

• esp8266 -> micro controller w/wifi
• dht22 -> temperature and humidity monitor
• USB cable -> power
• USB brick -> to power sensor

Software

• Arduino IDE: Arch Linux sudo pacman -S arduino
• Download: Download and copy to $HOME/Arduino/library/ESPAsyncWebServer/
• ESPAsyncTCP: Download and copy to $HOME/Arduino/library/
• Adafruit_Sensor: Arduino IDE: Sketch -> Download Libraries
• ESP8266: Arduino IDE: File -> Preferences -> Additional Board Manager URLs: http://arduino.esp8266.com/stable/package_esp8266com_index.json

Configure the ESP8266

• Load the appropriate ino into the Arduino IDE, connect the esp8266, ensure it shows up in Tools -> Board, then click Sketch -> Verify/Compile.
• Make sure you update the SSID/Key as required by your network.
• Once validated upload it to the board Sketch -> Upload. INO files can be found in the arduino folder within this repository.
• Disconnect the unit from power. Wire up the dht22 sensors as per the following:

Wiring

DHT22 back:

• Left: negative -> esp8266 gnd
• Middle: out -> esp8266 d1
• Right: positive -> esp8266 3v3

Networking

• Go to your router and set dhcp static for the new mac address on the network. In my case see below.
• For DNS, using nginxproxymanager to forward the domain name to the internal IP.
• Using UptimeKuma to monitor the IP to see if any go down.

Sensor	DNS
Outside	https://temp-outside.blurer.net
Bedroom	https://temp-bedroom.blurer.net
LivingRoom	https://temp-livingroom.blurer.net
Kitchen	https://temp-kitchen.blurer.net
VM	https://tempmon.blurer.net

VM Setup

I am using Debian 11 to run this. On Proxmox set the following:

host: vm102
hostname: tempmon.blurer.net
dns: 10.1.1.10, 10.1.1.11
vcpu: 1v
mem: 0.5g
hdd: 32g
ip: 10.2.2.10

Python - createdb.py

• Execute this python script to create the sqlite3 db. To be used later.

Python - CurrentTemps.py

• Need to document, but this is the current output:

[Running] /usr/bin/env python3 "/home/bl/dev/Home-Temp-Monitoring/CurrentTemps.py"
10-19-2022
07:05:29
Outside:  55.22  F
Outside:  41.50  %
Bedroom:  62.42  F
Bedroom:  46.20  %
Living Room:  62.42  F
Living Room:  37.50  %

To Do:

• Import the sensor name, date, time, temp, and humidity into the sqlite db.
• Take the sqlite db and present it via webapp.
• Add logic for high and low tempearture, high and low humidity, heat index, and converting units to celsius
• Setup webapp with the following:
  • Graphs
  • High/low temp
  • High/low humidity
  • Heat index/real feel temp
• Setup api to query the database
• Create docker container