Develop a sketch
I read that a few times. I'm not seeing a question; maybe I'm missing something
Or is this...
Develop a sketch ....
... an instruction to the forum?
You may really need to develop such a sketch but I don't. It sounds like a school assignment and I left school a long time ago.
But if you put some effort in and post your best attempt at a sketch I'm sure we will be happy to help you get it working.
Steve
Ok that really help! Thanks!