Re: Electric door and a Water heater controlled from Interne
Posted: Wed Nov 11, 2015 10:26 ameduperez wrote:As you seem to need only two outputs, may I ask why didn't you connect the relays directly to the ESP?
The esp output is 3.3v, so I'll need a 2 transistors to activate the 5v relays. Yes this was possible, but I plan to upgrade the project in future and add 2 more devices in the other room. So the communication will be with RF 433mhz radio signals.
And I need the Arduino for that.