guttermouth, and other electronic mad scientist types...

[mlwarriner]

i need an led. but not just any old led. i want one that's relatively large (say about 3/8" diameter), and that changes colors. and that i can run off of a single 9v battery. and mount in an empty control pot hole in a bass.

 

 

does such a monster exist? can you point me in the right direction of where?

[isaac42]

What do you mean by "changes colors"? The only LED I know of that can do so is a red-green-amber LED, which is actually two LEDs in one: run the current one direction, you get red, run it the other direction, you get green, alternate and our eyes and brains see it as amber. 9 volts is plenty, but switching could be a problem.

 

What are you trying to do?

[oldivor]

You can buy LEDs that change color. My old roommate used one for a project he had. You're going to need a resistor in there too so you don't short out the battery.

[bassthumpintwin]

I believe they make RGB LED's, but you'd have to make a controller for it IIRC. You'd probably need to step the voltage down from 9V to 5V or less too....

[Guttermouth]

 

i need an led. but not just any old led. i want one that's relatively large (say about 3/8" diameter), and that changes colors. and that i can run off of a single 9v battery. and mount in an empty control pot hole in a bass. does such a monster exist? can you point me in the right direction of where?

 

 

do you need it to change randomly or when you flip a switch or something?

[mlwarriner]

 

do you need it to change randomly or when you flip a switch or something?

 

 

 

i want to put the LED in an empty pot hole on the punkbass. i went from a 4-knob active system to a 3-knob passive system. so i'm kicking around ideas on what to fill the spare hole with.

 

i thought an led that changed colors, either randomly, or on a cycle, would be cool. but if it's gonna be a PITA, i'll do something else.

[Fireball_73]

http://direct.tesco.com/q/R.206-1673.aspx

[mlwarriner]

http://direct.tesco.com/q/R.206-1673.aspx

 

linky no worky

[perrydabassman]

linky no worky

 

It was for a discontinued christmas tree.....

[oldivor]

 

i want to put the LED in an empty pot hole on the punkbass. i went from a 4-knob active system to a 3-knob passive system. so i'm kicking around ideas on what to fill the spare hole with. i thought an led that changed colors, either randomly, or on a cycle, would be cool. but if it's gonna be a PITA, i'll do something else.

 

 

You can get LEDs that cycle through different colors. You might want to look on digikey's website and look around.

[Guttermouth]

 

i want to put the LED in an empty pot hole on the punkbass. i went from a 4-knob active system to a 3-knob passive system. so i'm kicking around ideas on what to fill the spare hole with. i thought an led that changed colors, either randomly, or on a cycle, would be cool. but if it's gonna be a PITA, i'll do something else.

 

 

something like these ought to do the trick then :

http://cgi.ebay.com/10x-5mm-RGB-Slow-Color-Change-LED-Free-Resistors_W0QQitemZ290401842871QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item439d4c76b7

 

(i haven't bought from that seller - it's just the first result that came up)

 

with the color changing led's it's pretty much just a matter of hooking them up to a battery and ground and they'll do their thing.some need a series resistor to keep them from blowing and some don't. you can use this calculator to find out what value resistor you'll need :

http://led.linear1.org/led.wiz

[Playerunk]

get 5 ore more leds in a line and make some kind of meter on how much output gets out of your bass

[mlwarriner]

 

something like these ought to do the trick then : http://cgi.ebay.com/10x-5mm-RGB-Slow-Color-Change-LED-Free-Resistors_W0QQitemZ290401842871QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item439d4c76b7 (i haven't bought from that seller - it's just the first result that came up) with the color changing led's it's pretty much just a matter of hooking them up to a battery and ground and they'll do their thing.some need a series resistor to keep them from blowing and some don't. you can use this calculator to find out what value resistor you'll need : http://led.linear1.org/led.wiz

 

 

 

and if i ground to the ring or sleeve on the TRS jack in the bass, the LEDs will shut off when i unplug the bass, no?

[Guttermouth]

 

and if i ground to the ring or sleeve on the TRS jack in the bass, the LEDs will shut off when i unplug the bass, no?

 

 

yep.just be sure to ground it to whichever tab the rest of your grounds aren't soldered to to be sure you don't have another ground path when the plug is pulled.

[mlwarriner]

 

yep.just be sure to ground it to whichever tab the rest of your grounds aren't soldered to to be sure you don't have another ground path when the plug is pulled.

 

 

sweet.