This is the relay I use:
I also have another one, which is not installed for the moment:
Do I need to connect the ground to the esp 3.3 ground also for any of these 2 relays?
This is the relay I use:
I also have another one, which is not installed for the moment:
Do I need to connect the ground to the esp 3.3 ground also for any of these 2 relays?