Our goal is to create an open source system allowing monitoring and remote/automated control of both hard (polycarbon/glass) and soft (PVC) small-scale greenhouses:

Windows and doors - status and control
Air temperature - status
Air humidity - status
Soil moisture - status
Soil temperature - status
Watering - status and remote control/automation
Wind safety -- windows and doors automatically close if the wind is too strong and could cause damage to the plants.
Visual monitoring online via USB cameras

The architectural components are divided into four main groups: mechanical, electronic, sensors and software. More documentation at https://github.com/Technariumas/opengreenhouse/blob/master/architecture.md