How I monitor my greenhouse with CircuitPython and open source tools: 
CircuitPython provides a revolutionary way to interact with microcontroller boards. This article explains how to use CircuitPython to measure a greenhouse’s temperature, humidity, and ambient light and publish the results to an MQTT broker using a CircuitPython MQTT client. You can subscribe any number of programs to the MQTT queues to process the information further.
read more: Opensource.com dmlond
Supporting Open Source.
Have you tried: Diving with Sharks?