Hi,
I didn't quite understand your requirement.
The idea you already have.
What exactly do you want?
A code, a schematic, etc. etc.?
The purpose of this forum is to help with difficulties and problems encountered in projects.
It's not writing code and drawing schematics.
Show your best effort, even if it doesn't work and we'll try to help as best we can.
BTW, you already read the thread:
How to get the best out of this forum ?