tag:blogger.com,1999:blog-6847048658257278783.post2229941234667876902..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Crowther HotcakeIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger164125tag:blogger.com,1999:blog-6847048658257278783.post-50436580487831279402023-05-23T04:05:01.189+01:002023-05-23T04:05:01.189+01:00I've reversed the Pots so they work normally b...I've reversed the Pots so they work normally but still no distortion from the gain pot, just a volume gain and added warmth in the mids, with loss of highs when it's turned most of the way up..?<br />Kabblouiehttps://www.blogger.com/profile/08491087145450701416noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37231983991217094742023-05-21T08:13:41.468+01:002023-05-21T08:13:41.468+01:00Hi, I've just completed this build as my first...Hi, I've just completed this build as my first vero layout after a couple of PCB projects. Sound comes through but all three 3 pots work in reverse and the gain is acting like a highcut rather than adding distortion. <br />Can anyone suggest what's going on here? Since all the pots are affected I'm assuming thats all coming from the same source issue.<br />Thanks Kabblouiehttps://www.blogger.com/profile/08491087145450701416noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18253770441696702152023-03-26T22:05:07.906+01:002023-03-26T22:05:07.906+01:00I realized after posting that my pedal is based on...I realized after posting that my pedal is based on another layout. Sorry about that. I built it a while ago, and I just assumed I got the layout from this site (where I usually get them). But it's still a Hotcake - and if anyone has an idea what could be causing the oscillation, it would be appreciated Fredrik Fenckehttps://www.blogger.com/profile/15363724691520981972noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-26226709946476061482023-03-26T20:00:01.021+01:002023-03-26T20:00:01.021+01:00I built this one and it sounds great! I'm gett...I built this one and it sounds great! I'm getting squeals though when the guitar is not plugged in and the gain is set above 2 o' clock. It's not really an issue in any practical situations - but it still bugs me. I used a shielded wire for the input, with one end grounded at the switch. But that didn't help. I can't figure out the issue. https://ibb.co/6R8khGWFredrik Fenckehttps://www.blogger.com/profile/15363724691520981972noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-70580409975865637002021-03-13T16:35:58.218+00:002021-03-13T16:35:58.218+00:00I built it without buffer and i added IvIark's...I built it without buffer and i added IvIark's JFET basic buffer with 2N5457 (5x6 holes).No more squeeling!The buffered one with TS buffer is squeeling.ConfirmedAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90310277462683455622020-09-04T16:56:47.374+01:002020-09-04T16:56:47.374+01:00I had this problem too. I tried a bunch of buffers...I had this problem too. I tried a bunch of buffers and none of them worked. In the end I added a 4.7nF cap from the input to ground. It gets slightly darker but stops squealing. You can solder it on the footswitch. Hopefully it works for you too.JGhttps://www.blogger.com/profile/06927680715814007664noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21115454306460240462020-06-30T02:40:06.505+01:002020-06-30T02:40:06.505+01:00Just built this. Sounds great on bass . surprising...Just built this. Sounds great on bass . surprisingly no low end loss through headphones. Time to box it up and take it to rehearsal. Alamondmhttps://www.blogger.com/profile/16107229108279367895noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52405977792245100292020-04-04T19:11:29.816+01:002020-04-04T19:11:29.816+01:00i have a 'wah' character to the sound a bi...i have a 'wah' character to the sound a bit. which i don't hear on the youtube demoes. what could it be? i tried different 071 - all the same. Also, whats does 220k r12 on the 77 hotcake do? Igo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-772523334736882292018-12-04T22:08:08.914+00:002018-12-04T22:08:08.914+00:00I want to add the bluesbarry mod to this layout bu...I want to add the bluesbarry mod to this layout but insted of unsing dipswitch or a toggle switch I want to use pot to bias the Diods <br />How can Achive that, I need your help of where to take wires <br />Thanks Angelhttps://www.blogger.com/profile/16376743831150085397noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-23095209979646933762018-11-06T16:47:21.718+00:002018-11-06T16:47:21.718+00:00This comment has been removed by the author.Angelhttps://www.blogger.com/profile/16376743831150085397noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73682049298499096802018-10-14T23:45:39.500+01:002018-10-14T23:45:39.500+01:00Hi. I made this and can't get any sound. I'...Hi. I made this and can't get any sound. I've tested it for days. Been all over it with a multimeter. Only thing left is the tl071. Anyone know of an easy way to test it on breadboard? Please note I'm pretty new to all this. Thanks.LEEhttps://www.blogger.com/profile/08052780116092263212noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43559666365776941542018-08-12T12:49:50.219+01:002018-08-12T12:49:50.219+01:00Are you using a battery or wallwart? If it's a...Are you using a battery or wallwart? If it's a PSU make sure it's regulated as the circuits designer warns that oscillation (not can, but ) WILL occur without regulated psu. Mr Crowther told me to always use a battery as that's how he designed itAnonymoushttps://www.blogger.com/profile/09804584663031296721noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-36238273062959897072018-02-23T12:13:09.124+00:002018-02-23T12:13:09.124+00:0010k definitely helps but the overall sound gets le...10k definitely helps but the overall sound gets less bassy, gain very maxed - still some squealIgo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-8666882947893425032018-02-21T08:24:05.839+00:002018-02-21T08:24:05.839+00:00cleaned the pcb properly with isopropyl aclo ->...cleaned the pcb properly with isopropyl aclo -> works! gain in middle -> super transparent od, gain maxed -> fuzz territory. it's likes slightly overdriven channel amp. u can put tuner before to lower the squeal, but i will try today 1M->10k thingIgo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48809457284546192402018-02-12T16:21:06.712+00:002018-02-12T16:21:06.712+00:00This comment has been removed by the author.Igo Suvhttps://www.blogger.com/profile/11201179933841444923noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78553695626527975852018-02-02T22:33:15.562+00:002018-02-02T22:33:15.562+00:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/17613196839315451985noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63299383608862020822018-02-02T17:53:40.250+00:002018-02-02T17:53:40.250+00:00This comment has been removed by the author.Matosawitkohttps://www.blogger.com/profile/07641254507625618712noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12137208004495003842018-02-02T09:09:00.712+00:002018-02-02T09:09:00.712+00:00I've built the circuit but all it does current...I've built the circuit but all it does currently is oscillate; each pot changes the pitch, my guitar's volume knob also effects the pitch.<br />I've measured some voltages and I'm getting:<br />IC (TL071CP)<br />Pin 1: 0.00V<br />Pin 2: 0.13V<br />Pin 3: 0.00V<br />Pin 4: 0.00V<br />Pin 5: 0.00V<br />Pin 6: 0.11V<br />Pin 7: 0.00V<br />Pin 8: 0.00V<br /><br />D1 (8.2V Zener)<br />Anode: 0.00V<br />Cathode: 8.29V<br /><br />Someone please help :'(<br />much love<br />-KathAnonymoushttps://www.blogger.com/profile/17613196839315451985noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87282129968642160272017-11-06T14:46:11.042+00:002017-11-06T14:46:11.042+00:00I have 1N4738 will work fine for 8.2v right? anybo...I have 1N4738 will work fine for 8.2v right? anybody tried with TL081? will be a differnce?Claudiohttps://www.blogger.com/profile/15857640090190862061noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72942062426185021212017-10-04T16:50:36.566+01:002017-10-04T16:50:36.566+01:00Bit of an update. I tried a few things to fix the ...Bit of an update. I tried a few things to fix the oscillation on mine. I swapped around ICs to a CA3420EZ which has internal buffers and that fixed it for some of my guitars, but not for all, also it sounded bad imo, so it was unideal. <br /><br />So I went back to the TL071 that I liked and ended up swapping the 1M on the left side of the of the layout for a 10k resistor, which seems to have fixed the oscillation for all my guitars that i've tried with it, so I recommend giving that a try.Anonymoushttps://www.blogger.com/profile/17203513867537529630noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-66480864118553148092017-08-23T12:44:13.653+01:002017-08-23T12:44:13.653+01:00hello i built this overdrive, sounds good for indy...hello i built this overdrive, sounds good for indy rock (thurston mmore uses to have it with sonic youth) BUT even at 0, the gain put is a little bit drive, i can't have " a clean booster" like the original, do you can help me ?Anonymoushttps://www.blogger.com/profile/16749285280286041151noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-14089770292591737732017-08-17T01:59:47.808+01:002017-08-17T01:59:47.808+01:00Just got this built, and while there is some oscil...Just got this built, and while there is some oscillation, I'm quite happy with the gain down a bit. Mine starts around 3 o clock, so I'm not missing out on much. The effect seems quite dark without the presence topped off, so thats where I keep it.<br /><br />I taste tested a few different opamps in mine. HA17741, which may or may not be a 741 variant, google wasn't really sure, but it seems very close on the spec sheet if not the same. the HA17741 was a bit harsh, not terrible though. CA3140EZ was dull, underwhelming. TL071 was really smooth, one might say creamy, very rich sounding. Finally the AD711KNZ which sat somewhere between the HA17741 and the TL071, quite nice. I think people may like it as a middle ground, but the sound of the TL071 was the winner for me (for now).<br /><br />The circuit was very easy to build. I ended up using a 1N4738 zener diode from tayda and it seems to have worked nicely. Boxed it up in a viola pink 125b also from tayda. http://imgur.com/a/tTRS2Anonymoushttps://www.blogger.com/profile/17203513867537529630noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18435383805375842332017-02-03T21:58:03.770+00:002017-02-03T21:58:03.770+00:00This might be a long shot on the oscillation issue...This might be a long shot on the oscillation issue but I recall when I had one of these that the circuit board was totally covered in glue(?) sandwiched with some card. 0friendsrecordingshttps://www.blogger.com/profile/17354056201651891355noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17044537806691056082016-09-09T18:25:55.826+01:002016-09-09T18:25:55.826+01:00Yes.....BUT. The layouts are drawn from the bare ...Yes.....BUT. The layouts are drawn from the bare component side...as if you have x-ray vision. So mark the cuts on the bare side exactly as you see them here, then flip over to the copper side and make the cut.<br /><br />Example...the top right cut on 9V rail is 4 holes in from the right. Use a sharpie and count 4 holes in from the right on the bare side and mark with your sharpie. Flip the board over and you'll see the mark is now on the left side. Cut here.Ciaran Hasletthttps://www.blogger.com/profile/14841971807120256954noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76808209555026992282016-09-09T18:16:14.055+01:002016-09-09T18:16:14.055+01:00I am going to attempt this as my first pedal build...I am going to attempt this as my first pedal build. Am I assuming that the Red Squares with the Red Dots are places where I should cut the conductor strip on the back side of the Veroboard?<br /><br />Thanks!Anonymousnoreply@blogger.com