MOTM

I have substituted the green Lumex leds (from Digikey) for many
of the red leds when I build MOTM modules.  I generally prefer more
green and use the red leds for indicators such as clipping.

I bought extra leds and reuse the housing to mount bicolor and blue
leds.  I have to trim the tabs inside the housing for these
leds to fit.  The Chicago bicolor leds fit and work just great.

These alternate leds are the standard dome shape and are too long
and extend out of the housing.  I simply grind off the top of the
led to flatten them and create a nice diffused surface. I then use
sandpaper in a rotary motion to smooth them off and leave a circular
pattern on the surface.

I use bicolor to indicate signal polarity such as on the MOTM-320
LFO.  They aren't as bright as the MOTM bicolors but look quite good.
I use blue to indicate MIDI for my Roland Sound Canvas module and my
Expressionmate Ribbon module.  I wouldn't want a whole panel of blue.
It would be hard on my eyes.

Dave

--- In motm@yahoogroups.com, "musik_arbeiter" <nickca@g...> wrote:
> 
> Is there any electrical reason why I couldn't simply swap the red 
LEDs
> on my 101 and 390 modules for blue ones, or possibly some other nice
> color like ultraviolet or sea green? Would I have to do anything
> besides just soldering one in place of the other?