adding an active LED to a delay pedal

[estch71]

Hi,

I was wondering where I would place an LED in this layout to become active with the delay time.

[deadastronaut]

thats not an easy job..

it can be done but the circuit that gives a 'delay tempo led' is actually much bigger than the delay circuit....hmmm...



funny i was just trying something similar with the led lighting up with just the initial note + repeats..

[estch71]

Yeah, I saw a layout for PT2399 tap tempo daughter board and thought that I could place it in there somehow.  I have to look at the actual schematic to see the path.  I've seen something like it before, but I can't remember where.  Interesting research subject. 

[danielzink]

thats not an easy job..

it can be done but the circuit that gives a 'delay tempo led' is actually much bigger than the delay circuit....hmmm...



funny i was just trying something similar with the led lighting up with just the initial note + repeats..

'twould be sound to light 'eh ? 

How did it work out ?


Dan

[deadastronaut]

^ yeah.. i was avoiding the old 386 lark..

and going with something smaller..

http://www.diystompboxes.com/smfforum/index.php?topic=95668.msg951156#msg951156

still haven't sorted it yet though..