Hi to all and tank you for any suggestion,
I have a question about advanced using of potentiometers, but I can use an example to explain better what I mean.
there are many solutions to control an RGB led with arduino and potentiometers.
something like these:
1) rgb led with single potentiometer: http://legwinskij.blogspot.com/2011/01/arduino-rgb-mixer-with-single.html
2) rgb led with 3 potentiometers: http://www.arduino.cc/playground/Main/RGBLEDPWM
My question is valid for this hack but also for many others..
There is a way to control simultaneously the three colors (RGB) with 3 potentiometers without a swicth (es:1) and only one analog input?
I would use 3 potentiometer, in series, that have different load on a single analog input so that the sum of their values would be useful to generate an unic number for decoding rgb different amount.
To explain better the idea look this image:
in this case (i don't how to realize it), I should have a single value (es: 195) that would be enough to set up the three values of RGB led.
(in the example 195 => 1 for Blue(lowest intensity), 9 for green (max intensity) and 5 for red (medium intensity)
could someone help me to understand if this solution is possible and, in that case, some suggestion to realize it?
thanks a lot,