I'd like to implement a system for monitoring and logging temperatures, and show data or show graph via webserver.
The site is a warehouse of 7000 sq meters, covered by ethernet cable and wireless.
I'd like to get advice on which hardware is better to use:
- which arduino
- wlan or ethernet (or, better, rs485 over dedicated RJ45 CAT5e)
- any software already available to collect, store and display data?
Thank you everyone
Fabio Mantovani