I am very new to all of this, so please excuse if this is a very basic question.
I am trying to power a tiny water pump with my raspberry pi. For that I need the 3.3V or 5V output, because the GPIO pins do not supply enough current.
In order to control it nonetheless, I decided to go with a 5V relay (this one).
I looked up tutorials online (e.g. this one) how to wire up the relay. The specify that the VCC should be connected to the 5V, which makes a lot of sense to me, because after all it is a 5V relay.
The problem is, that if I wire it up like that, I cannot control the relay with a
However, if I plug the VCC into the 3.3V output and change nothing else, everything works exactly how it is supposed to work.
So I was wondering if someone could explain to my why I am observing this behavior and if it is wrong or dangerous to power the relay with 3.3V like I am doing right now.