Toobuilder
Well Known Member
Electrical wizards ? (that?s everyone except me)
I want to use a single tri color LED as a status indicator for an aux fuel cell. The logic for this circuit is driven by 2 ?open/closed? float switches; 1 each placed at the ?empty? position and the ?5 gallons remaining? position.
Desired functionality is as follows:
More than 5 gallons remaining (both switches floating) = Green
5 gallons or less but not empty (?empty? switch is floating; ?5 gallon? switch is not) = Yellow
Tank empty (no switches floating) = Red
There are no doubt plenty of you who can do this circuit in your sleep, but tri color LED?s are a bit beyond my grasp. Is there an off the shelf source for such a driver circuit? Perhaps I can cannibalize some cheap ornamental yard light? Are there plans available on the Web? Can you point me to a book so I can learn?
Thanks for your help
I want to use a single tri color LED as a status indicator for an aux fuel cell. The logic for this circuit is driven by 2 ?open/closed? float switches; 1 each placed at the ?empty? position and the ?5 gallons remaining? position.
Desired functionality is as follows:
More than 5 gallons remaining (both switches floating) = Green
5 gallons or less but not empty (?empty? switch is floating; ?5 gallon? switch is not) = Yellow
Tank empty (no switches floating) = Red
There are no doubt plenty of you who can do this circuit in your sleep, but tri color LED?s are a bit beyond my grasp. Is there an off the shelf source for such a driver circuit? Perhaps I can cannibalize some cheap ornamental yard light? Are there plans available on the Web? Can you point me to a book so I can learn?
Thanks for your help