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Projects => Tech Help - Projects Page => Topic started by: pdub on December 12, 2011, 06:55:01 PM

Title: Slow Loris Wierdness
Post by: pdub on December 12, 2011, 06:55:01 PM
Hi all.

I just got the Slow Loris completed and I am having a couple of problems. I am using a center off toggle switch. 1N914's and Red diffused 5mm LED's. In the center off position I get what I think is the stock Rat mode, all the controls work as expected. But this should be no diodes to ground so no distortion! I test the switch and checked that it is functioning properly, grounding the diodes as in the schematic at each position. When I test the pedal I get no sound from either the diode or LED position only in the center off. Neither the diodes or LED's are grounded in the center position. I checked the orientation and the diodes are in correctly. This is really weird! Any help is greatly appreciated.

Thanks, Charles
Title: Re: Slow Loris Wierdness
Post by: gtr2 on December 12, 2011, 07:13:00 PM
I'm not sure I understand...

You will get some distortion from just the IC.

Are you saying when you are grounding the diodes via the switch position you get no sound at all?

Josh
Title: Re: Slow Loris Wierdness
Post by: pdub on December 12, 2011, 07:16:18 PM
Hey Josh

Thanks for responding.

Yes I get no sound when grounding the diodes.

Thanks, Charles

Title: Re: Slow Loris Wierdness
Post by: pdub on January 05, 2012, 06:20:05 PM
Ok so getting back to this one after finishing the awesome Dirtbag!

I have removed the LED's and now the diode clipping works and the center switch position gives me a slightly overdriven sound as I would expect. But when the LED's are in I get nothing in either clipping position and light fizzy sound in the center position. I have checked the polarity of the LED's and that looks ok. They are 5mm diffused red ones.

Any help would be appreciated!

Thanks, Charles
Title: Re: Slow Loris Wierdness
Post by: mgwhit on January 06, 2012, 01:57:22 AM
Which state is it in right now: LED's installed or out?

What you're describing is pretty odd given the portion of the circuit we're dealing with.  The only thing I could come up with is (a.) bad switch and (b.) bad LED's, a combination that is highly unlikely.  If you can post some good, in-focus pics of both sides of the board I think that would help.
Title: Re: Slow Loris Wierdness
Post by: pdub on January 07, 2012, 06:10:14 PM
Thanks. Yes it was a weird problem. I ended up removing the switch and the LED's and hardwired it to diode clipping and now it works fine. I think I will just leave it as is. I must have had a short somewhere.

It Sounds great! I'd like to try the LED clipping at some point but for now I am happy with it and the sweep and filter controls add some nice variation to the sound.

Thanks for everyone's help!

Charles
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