Publish sensor updates from Enviro pHat to MQTT
Calibrates the temperature reading for variance caused by heat from the CPU of the Raspberry Pi and smooths the data using a moving average.
A factor of 1.2 works well for me, but may vary depending on case and environment.
sudo npm i -g envirophat-mqtt
envirophat-mqtt
Use PM2 or similar to run on startup.
Create a config file at /etc/envirophatmqtt/config.yml
Check the available settings and defaults in config/defaults.yml.
Example:
---
mqtt:
host: '192.168.0.123'
topic: sensor/loune/input
temperature:
factor: 1.2
interval:
duration: 60000- Pimoroni libs:
curl https://get.pimoroni.com/envirophat | bash - Node js
Selfish reason: Because all my existing home automation runs on Node js managed with PM2.
Even though the provided libraries are Python, and it's pretty easy to publish to MQTT from Python, I wrote this so I could run my entire platform on Node js.