I have the book Practical Arduino which is a collection of arduino projects and it steps through the design and explains everything. In it is a DIY water meter tutorial with a LCD and a couple buttons for resetting the display. I'll have to re-read that, but I'm pretty sure there are 3 ways to wire the LCDs up. One method uses tons of pins, 12 wires sounds about right, the other uses 8 or so, and the last uses 5 or 6 I think. I'll look it up and report back.
Thankfully, this project doesn't require many pins, so if I did need 10 pins it wouldn't be a problem.
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