What are these electric components? Answered
Hello guys I thought you could help me out with this a little bit.
So I went to the dollar store looking for some. I'd like hack some to what I want, but first I need to know how it works!
Um want to know what these things are on the board and what it is.
So, I want to know what that black blob is on PCB and also that barrel shaped thing and why is the siren hooked up to that barrel.