You're welcome. Most of the responses here for circuit help (and I do this myself sometimes) are of the form, "you can use one of these IC's". If you're lucky, someone will post a schematic they had laying around, or they found on a web site, of something that you could modify, or they point you to a tutorial. These responses are good if the OP has some circuit design skills, or wants to learn some. Lots of guys, though, and I suspect you are one of them, just want a schematic they can build that will work. They're trying to solve a problem, and don't give a hang about learning how to do it themselves. For these guys, it sometimes only takes 10 or 15 minutes to crank out a simple design, and even simulate it for insurance. This was one of those times.

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Ron

 

I'm still a bio-med tech but haven't built a project in many years. (c:

 

Haha, Roff you got me pegged! I'm over 50 and too tired, busy and forgetful to design my own circuit so I really appreciate your assistance.

 

I'm 66 and retired, and I suspect that staying active in electronics (with this forum being a big part of that) is what is staving off mental old age. My body is having a tougher time of it.

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Ron