flashing led's

[jeremypb]

wondering if anyone knows a simple circuit that will cause 1 or more led's to flash when a note is played.

[head_spaz]

Look up LM3915 at National Semiconductor.
They are used for building VU meters mainly.

[GibsonGM]

Could just build an opamp circuit and set the quiescent gain at a threshold just a tad lower than the LED turn-on voltage.  That way, an input signal would light 'er up.  Pretty simple, depends on what you want to do with the flashy LED and how many you need....

[mth5044]

You could try the first part of the Clari(not) schematic found on this forum.

[jeremypb]

thanks for the suggestions. i'll try some of those and let you know what works/doesn't