I'm wondering what the difference is between the RVcc pin on a relay module
see image (in between Vcc and Gnd)
and JD-Vcc? see image (next to Vcc)
I am trying to connect a 12V motor to my relay module, but all tutorials I find are tutorials with the 2nd type of relay module, while I have the 1st one. So I want to be sure the two pins mean the same before blowing up my module.
I'm sorry if this is a dumb question, I am not quite professional on this.