[TriEmbed] LED resistor/Ohm's law calculator

[jonjwolfe at anibit.com]

I wrote a little tool to compute current limiting resistor values for
LED's in series. 
For many on this list, this is a pretty basic calculation, but I get
asked about this type of setup often enough, and thought it would be fun
to write a tool that calculated the resistor needed. (It can also
calculate the other components of the Ohm's law equation as well). I had
started this one a long time ago, and the recent Triembed Ohm's law
talk, among other things, inspired me to finish it and finally put it
up.

https://anibit.com/webtools/small/led_calculator/ [1]

Feedback is appreciated. I still need to do some validation on the
inputs, it will let you put non-sense values in, such as negative
numbers, etc.

I'd love to make a bunch of little tools like this on my site, though
they do take a non-trivial amount of time to put together. 

--Jon

 

Links:
------
[1] https://anibit.com/webtools/small/led_calculator/
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