I use PI 4 to power two 3v relays. One is controlling 5v dc, another 12v dc. And about once a minute I am switching each relay signal state to On/Off So each relay is connected to 3v pin, ground pin and signal GPIO on the PI. Do I need to put some protection, like resistors, diodes on the board? What exactly? Or is this setup safe? I tried to google the answer but did not find any information on pi+3v relays My relays are these ones
Thank you in advance!