@davidmcsweeney I just tried the sketch, same problem with the square wave and interrupt. I gave up and wrote a millis code to basically do the sam...

@will Yes it will help. This must have been some effort for you and I really appreciate it. I will start coding very soon and will let you know how...

Thanks for your quick response. I did load the extEEPROM library, but as I am just a rank noobie, (!) I had some difficulty following the material. I...

I have pretty much the same problem. Did you ever get a reply, or solve your problem?

Thanks for your response. Since I'm also space limited on the proposed board, instead of an inverter dip device (I don't do surface mount-yet) I'll ...