I apologise in advance if I am asking something already asked.
I need and advice on how to procede on my home automation project.
Basically I just need to control around 30 5v finder relèa(https://www.finder-relais.net/en/finder-relays-series-40.pdf) 10A/16A to manage ligths/electric socket/motorised shutters.
I will control these relès via a switch button.
Is INPUT_PULLUP enough? shall I use a resistor as well?
I have a C background, but any electrical.
I have two arduino due and one mega.
Any help would be appreciated.