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DIY Stompboxes => Building your own stompbox => Topic started by: MarkB on February 25, 2004, 11:00:14 PM

Title: EZ Vibe - Flashing Status LED
Post by: MarkB on February 25, 2004, 11:00:14 PM
Where can I tap a voltage from to have the status LED on an EZ Vibe pulse along with the LFO speed?

I know someone posted about doing this before.. but can't find the post, nor can I remember where the spot was.

Thanks!!
"-)
Title: EZ Vibe - Flashing Status LED
Post by: BDuguay on February 26, 2004, 09:52:25 AM
I've done it to mine, but it's kinda hard to explain unless you have the schematic.
Do you have it?

Brizee
Title: EZ Vibe - Flashing Status LED
Post by: MarkB on February 26, 2004, 10:07:19 AM
I do -
I just built it last night.. but it's not working yet (actually, the flashing LEDs aren't flashing.. yet)
"-)
Title: EZ Vibe - Flashing Status LED
Post by: BDuguay on February 26, 2004, 01:10:50 PM
I've got a couple more on the go that are demonstrating those same symptoms. I'm building a 3rd board hoping that it works so I can use it to trouble shoot the other 2.
As far as the pulsing status light, hang on till I get home from work and I'll follow up with you on how to set that up. It's eazy breezy japaneezy!
Brizee
Title: EZ Vibe - Flashing Status LED
Post by: BDuguay on February 27, 2004, 07:28:05 AM
I checked the schematic and what you need to do is take a lead off the 220ohm resistor that comes after the drive trimpot. Put in a current limiting resistor and your led and there you go. If you add another led in series after the current limiting resistor, your status led will pulse in a manner that is more easy to see. Try it with, and without the second led and you'll see what I mean. And then maybe someone could explain to me why that is.
Brizee.
Title: EZ Vibe - Flashing Status LED
Post by: MarkB on February 27, 2004, 09:35:43 AM
Thanks!
I'll try that..
I've ALMOST got the Vibe working now - very close..
I can hear the effect with an audio probe, but I'm getting a big volume drop across R13 - so that when it blends the clean/effected sounds - all you hear is clean..  trying to troubleshoot that now.

"-)
Title: EZ Vibe - Flashing Status LED
Post by: MarkB on February 28, 2004, 12:31:03 PM
FYI - took a blue LED, neg to ground, pos to the point right after the drive pot, before the 220 - flashes perfectly in time with the LFO.. and never QUITE goes out...

I guess I'll have a nice, pulsing blue status LED!
"-)