Hi all and happy 2012!
I don't know if this is the right place where to ask, but I have this need: I'd like to change the colour of several RGB LEDs (10-12-16), changing the signal amplitude. If at the input of this analog level meter there is a very weak signal, the colour of all LEDs will be dark blue. Rising with the amplitude, the colours of all LEDs will change to clear blue, and after green, yellow, orange and up to a very bright red at the maximum level.
I know this could be done by a PIC or other micros, but I'd like to do it ALL ANALOG. I don't want to fight, to-morrow, against digital spikes or some unpleasant interferences.
Can somebody help? Any suggestion? Any schematics?
Many thanks in advance
Milo
I don't know if this is the right place where to ask, but I have this need: I'd like to change the colour of several RGB LEDs (10-12-16), changing the signal amplitude. If at the input of this analog level meter there is a very weak signal, the colour of all LEDs will be dark blue. Rising with the amplitude, the colours of all LEDs will change to clear blue, and after green, yellow, orange and up to a very bright red at the maximum level.
I know this could be done by a PIC or other micros, but I'd like to do it ALL ANALOG. I don't want to fight, to-morrow, against digital spikes or some unpleasant interferences.
Can somebody help? Any suggestion? Any schematics?
Many thanks in advance
Milo