Piezo triggered color organ
Posted: Tue Nov 15, 2011 10:20 pm
Next project...
Son is looking to pimp out his concert helmet (yes, the band encourages costumes). We've already installed
LED lighting around the face - lights it up in the vein of the space helmets in 2001 - A Space Odyssey. Now
he wants to be able to pulse some LEDs to the beat of the music, specifically the bass or drums. So I dug up
a 3 band Color Organ schematic that uses LEDs and battery power and am going to use just the bass/low
frequency section. He thought maybe he could use a piezo disc as the pickup instead of a mic element.
Now for the question...
What kind of voltage (milli?) can we expect from a piezo disc at concert levels? I think it would be cool to
mount it about where the mouth would be, but on the outside. If the piezo cannot get more than a few
millivolts, then I guess we'll go with the externally mounted mic.
Thanks for any and all help.
CeaSaR
Son is looking to pimp out his concert helmet (yes, the band encourages costumes). We've already installed
LED lighting around the face - lights it up in the vein of the space helmets in 2001 - A Space Odyssey. Now
he wants to be able to pulse some LEDs to the beat of the music, specifically the bass or drums. So I dug up
a 3 band Color Organ schematic that uses LEDs and battery power and am going to use just the bass/low
frequency section. He thought maybe he could use a piezo disc as the pickup instead of a mic element.
Now for the question...
What kind of voltage (milli?) can we expect from a piezo disc at concert levels? I think it would be cool to
mount it about where the mouth would be, but on the outside. If the piezo cannot get more than a few
millivolts, then I guess we'll go with the externally mounted mic.
Thanks for any and all help.
CeaSaR