Arduino semi functional whilst stand-by

Using Arduino Project Guidance
1

Hey guys!

I'm quite new in the world of arduino but I challenged myself in using an arduino for my new little project.

The project I'm planning on doing is a semi digital audio amp.

With semi I mean it's all gonna be circuit boards and pot meters.. Except for the these are digital pots.. So I can control my (tube) preamp by remote.

Here are a few things my arduino needs to do:

  • Temperature monitoring with LCD and automatic fans
  • LCD menu to display volume, treble, bass or input
  • Remote volume, treble, bass and input selection (powering the system as well)
  • Rotary power digital pots for volume, bass, tremble
  • rotary select input source
    -power on and off the system

Since this is my first time really working with arduino I'll probably need some help.. But here comes the question I'm wondering about.

I want to be able to power the system with a button and with a remote control. Both devices can input a pulse 1 or 0 to the arduino. Arduino powers the relay et voila!

Thing is I get 230w continue.. Bend it down to 12 to power the arduino (before the relay) so my arduino has power all the time.. But at this time I only want the on/off pulse to work (means the IR pulse as well)

I know this is doable, but I'm wondering if this is a programmable feature (if button. 1 is on everything works, else nothing)
Or does this work a little different?

Kind regards!

2

I know this is doable,

Do you?

Rotary power digital pots for volume, bass, tremble

What exactly is this?
All digital pots are limited in their voltage rating to about +/- 15V, and they can only handle in the order of 30 mA or so of current. You might have to resort to a servo physically turning a manual pot.

I want to be able to power the system with a button and with a remote control. Both devices can input a pulse 1 or 0 to the arduino. Arduino powers the relay et voila!

You can’t power an Arduino with a pulse, the best thing you can hope to do is to take it out of sleep mode with a pulse. An Arduino can’t turn on a relay unless it is powered up, so that needs a rethink.

All in all a much too ambitious project for a beginner.

Sorry.