OK lets think out side the box.

How can we build a complete engine monitor that will monitor
a dozen engine parameters with alarms and will be usable in bright sunlight
and will take little room on the instrument panel of a tandem
seat airplane? Also it must cost less than $100 to build.

Paul Lamar

You can't beat LED's for cost...
Mark Steitle

Hint: You are getting warm.

Paul Lamar
 
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