yousuf810:
Things attached on mega: lcd shield, two DHT22 sensor, three 12v relay, L298N motor shield for variable fan speed, one 5v input pin and for future I might require 3 analog pins....pheww!!!
I am calling the wemos every 750ms so I need some that can come close to it.
Do you really need to publish AC data so often? The original post said to control the room AC over WAN so let the Arduino deal with the fine details and just publish data like AC state, temperature, humidity, etc once per minute and check for WAN commands every second.Oh great.. Ipify.org...I did not know about this.
Now my question is, what if some one knows ip of my wemos, what can they do with it? Can they use my bandwidth? Can they get into my network through my wemos? Can they install a Trojan on wemos? Can they get into my laptop from wemos connected on my wifi router?
Wemos is not so much the problem, especially if you don't have OTA updates enabled. The problem is to get to the Wemos you need to go through the router and that probably connects to everything else like the PC etc.
I personally use a RPi running mosquito & node-red as a server that collects data from several sensors and it publishes the data to the online dashboards using html & mqtt.