Alright, Excuse me as this is my first post, I did some searching around and noticed several subforums, but figured this was the right placed to post a guidance request question.
I'm looking to accomplish a rather simple tone generator with an LCD screen, but instead of having a speaker, I'd like an RCA out, in order to push sound to a car amplifier. I won't to be able to control the Hz and Volume via momentary buttons with the software, and I'd like an Led status indicator and an on/off switch. Most of this I have the common sense to figure out, and looking at the code examples, programming will be very easy (it's my strong suite), but I had a few specific questions.
1.) What Arduino board should I look into getting?
2.) Do I need a serial LCD in order to save port usage of my arduino? I'd like to not buy a bunch of shields.
3.) Is using an RCA female jack as easy as removing the speaker from a schematic and replacing it with the Jack?
4.) For the purposes of testing the amp at different Hz, will using the Tone() function suffice? I don't care about sound quality, but it's always a plus.