Zero IoT is a monitoring system for air parameters (like temperature or humidity) and activity of the sun. The main goal is to run this software on a Raspberry Pi Zero or similar small SBC devices with small amount of hardware and low power consumption.
The data can come from external sensors connected to Wi-Fi network by devices (e.g. ESP8266 devices family).
The first layer contains IoT RESTful server based on Flask REST JSON:API and SQLite database which stores data that come from external sensors. The second layer is a set of scripts for converting data from SQLite database to RRDTool databases and generating a set of time based graphs. These graphs are shown in the third layer on the HTML site served by lighttpd server.
If you have a powerful computer you can use Grafana or similar software to show nice graphs with some metrics. Below I described how to install this on Raspberry OS system.
Requirements:
- Raspberry OS
- SQLite
- RRDTool
- Sunwait
- some HTTP server, e.g. Lighttpd