madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: ian on August 28, 2018, 03:11:01 AM

Title: solved! Sea Urchin only has 5 repeats
Post by: ian on August 28, 2018, 03:11:01 AM
i built 2 of them at the same time. both have the issue. i have built a few in the past and never had an issue. the oscillation is the best part imo. but these last two sound perfect, they just only repeat about 5 times. ive replaced the 2k with a 1k, no change. i then jumped the resistor. no change. i tried jumping the repeat pot legs to get an infinite repeats effect. that didnt work either. one effect is fully boxed one is not. they both sound and act the same way.
thanks for your help
Title: Re: sea urchin only has 5 repeats
Post by: Willybomb on August 28, 2018, 10:32:07 AM
I had a similar issue with a Cavedweller, on pcb, and on vero.  Then I had the same issue with a Rebote on vero too.  I dunno, I just couldn't get the bloody things to do more than a couple of repeats at decent volume.  Wouldn't get any oscillation either.  Finally built a mimik on pcb and got a working delay...  I've built a number of delays on vero and pcb before that have worked fine, so I don't know what was going on (and I couldn't fix them either)...
Title: Re: sea urchin only has 5 repeats
Post by: madbean on August 28, 2018, 11:16:50 AM
Let's have a picture of the top of your Sea Urchin. There may be a wrong resistor in there somewhere.
Title: Re: sea urchin only has 5 repeats
Post by: ian on August 28, 2018, 06:50:52 PM
That's what I'm thinking. The pc I'm using is actually from another company. http://pcb.delyk.com/modulation/56-mariana-trench-delay.html
I have built 2 of them on the etched madbean SU boards. And they kinda worked. Then I found these and I've built probably around 10. No issues until now. I'm at work right now, but I'll snap some pics in a few hours and get them posted. Thanks for the help!
Title: Re: sea urchin only has 5 repeats
Post by: jimilee on August 28, 2018, 07:44:37 PM
I have built several myself, 2 of the day 4 or 5 I've built haven't gone anywhere. That, for me is a notorious crap shoot no matter how good the PCB. That's no help, I know.


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Title: Re: sea urchin only has 5 repeats
Post by: ian on August 29, 2018, 12:09:55 AM
Got it! It was capacitor c8. I used a 22n instead of a 2n2. Works perfectly now! :)
Title: Re: solved! Sea Urchin only has 5 repeats
Post by: ian on August 29, 2018, 01:21:59 AM
Gut shot
Title: Re: solved! Sea Urchin only has 5 repeats
Post by: ian on August 29, 2018, 01:24:45 AM
Enclosure
Title: Re: solved! Sea Urchin only has 5 repeats
Post by: Willybomb on August 29, 2018, 02:54:01 AM
Good to hear.