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The resistulator is a resistor calculator for Mac OS X Dashboard. It calculates the value of a resistor from the sequence of colored bands painted on the resistor. It also displays the corresponding color sequence when a resistor value is entered.
Instructions
To enter a color sequence, click each colored band to cycle through the possible colors. You can look up a color sequence by entering the numeric resistor value from the dropdown menus when the widget is in expanded form. The widget is resized by clicking anywhere on the green background.
Considerations
The use of dropdown menus for numeric value entry was decided upon, rather than an editable text field, since it enforces the requisite thought process of the encoding scheme. This allows the resistulator to function as a learning tool. The green gradient background and cartoon mounted resistor lightly suggest the context of use, more than an abstract representation would.
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