tag:blogger.com,1999:blog-5481402030233340127.post7510807197832081778..comments2024-03-28T17:24:07.520-04:00Comments on Perf and PCB Effects Layouts: Death by Audio Echo Dream 2dtgehringhttp://www.blogger.com/profile/09555201436004501222noreply@blogger.comBlogger69125tag:blogger.com,1999:blog-5481402030233340127.post-27075892483952686922020-12-07T06:23:04.603-05:002020-12-07T06:23:04.603-05:00THANK YOU! :DTHANK YOU! :DMRKhttps://www.blogger.com/profile/08479896187556957971noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-73257787750850119642020-11-30T03:18:59.840-05:002020-11-30T03:18:59.840-05:00https://youtu.be/dQ0LU-Tt40Ihttps://youtu.be/dQ0LU-Tt40IAnonymoushttps://www.blogger.com/profile/10593042746596473905noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-68174534678496517852020-11-27T18:08:26.856-05:002020-11-27T18:08:26.856-05:00I think the 1uF at the Master pin 3 should be the ...I think the 1uF at the Master pin 3 should be the other way round.Anonymoushttps://www.blogger.com/profile/00730008061727204692noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-82534855197521663262020-08-14T11:14:03.613-04:002020-08-14T11:14:03.613-04:00Used XR2206CP instead of XR2206P btwUsed XR2206CP instead of XR2206P btwAnonymoushttps://www.blogger.com/profile/10593042746596473905noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-37902872256956711312020-08-14T11:00:27.025-04:002020-08-14T11:00:27.025-04:00Verified! Made one used the advices about caps and...Verified! Made one used the advices about caps and sw1, powered by charge pump and it works! Designing an enclosure now, with a button for infinite feedback, great pedal! Thanks!Anonymoushttps://www.blogger.com/profile/10593042746596473905noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-45519914324763539302020-06-22T12:07:52.266-04:002020-06-22T12:07:52.266-04:00verified! but that was a very tricky build.
first ...verified! but that was a very tricky build.<br />first of all, like the older comments said; i changed the 47nf and 220nf, connected the sw1-2 to depth 2 and they were all correct. and i finished the build with a (probably fake) cheap(2$) xr2206cp. as expected, the modulation part didn't work. but a few days ago, after a detailed research i found an original xr2206p in my country and it was about 6$. just tried the circuit with it, and now everything works like a charm. so yes, this layout is very picky on the modulation ic. try to find an original one.o.ç.https://www.blogger.com/profile/08784673410126103179noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-46678684048296982082020-02-29T19:00:37.395-05:002020-02-29T19:00:37.395-05:00all seems to work well except for the time knob, i...all seems to work well except for the time knob, if the time knob is set to 0 I hear a strange throbbing pulse under my normal signal..iuciuchttps://www.blogger.com/profile/08792643189984730043noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-42287197527497869182020-01-18T13:58:39.614-05:002020-01-18T13:58:39.614-05:00Does anyone have the schematic lying around. Would...Does anyone have the schematic lying around. Would like to check it out and compare to try and breadboard this out first.Anonymoushttps://www.blogger.com/profile/05098951531135052669noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-62911328095894483702019-06-11T06:13:15.450-04:002019-06-11T06:13:15.450-04:00trying to compare your layout to the schem. Switch...trying to compare your layout to the schem. Switch 1-2 seems to connect to depth-wiper on the schem, and you have it on pin 3. have i missed a better schematic somewhere?FuzzDoghttps://www.blogger.com/profile/04618749349516392605noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-78241532130523714142019-06-11T06:08:50.811-04:002019-06-11T06:08:50.811-04:00kudos on managing to interpret the schematic that&...kudos on managing to interpret the schematic that's out there. I was about to put a board together but wow. that's some indecipherable stuff. FuzzDoghttps://www.blogger.com/profile/04618749349516392605noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-32735935365327887932019-05-26T09:31:27.247-04:002019-05-26T09:31:27.247-04:00Great job! Thanks, everything is working!Great job! Thanks, everything is working!Anonymoushttps://www.blogger.com/profile/18418623078646149933noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-55331049615443269232018-12-17T16:24:45.650-05:002018-12-17T16:24:45.650-05:00Just to mention it - verified with the changes men...Just to mention it - verified with the changes mentioned above by Jiomy. Chris Phttps://www.blogger.com/profile/16746104708662823724noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-37462970025708341722018-12-17T16:12:07.487-05:002018-12-17T16:12:07.487-05:00Bought another 2206 and everything started! Now mo...Bought another 2206 and everything started! Now modulation works! Verified, thanks a lot brother!Chris Phttps://www.blogger.com/profile/16746104708662823724noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-28614094071922110822018-11-30T10:39:47.774-05:002018-11-30T10:39:47.774-05:00Verified!!!Verified!!!Miquelhttps://www.blogger.com/profile/12508600081399991350noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-54189129167050838192018-11-27T16:13:37.010-05:002018-11-27T16:13:37.010-05:00Everything works (echo, fuzz) except modulation. I...Everything works (echo, fuzz) except modulation. It could be issue with fake 2206 chip? When I first time plug power on (18v) 100ohm resistor started to be very hot. I removed xr2206cp and it was ok. Then I inserted 2206 and it happen again. I inserted another 2206 (have two pieces) and it happen again. Just had read about issues with fake chips on web.Chris Phttps://www.blogger.com/profile/16746104708662823724noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-22938965118791710282018-11-19T18:04:02.061-05:002018-11-19T18:04:02.061-05:00The same with me... Modulation is not working.The same with me... Modulation is not working.Chris Phttps://www.blogger.com/profile/16746104708662823724noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-27678560822540690302018-11-10T13:43:05.796-05:002018-11-10T13:43:05.796-05:00This comment has been removed by the author.Leehttps://www.blogger.com/profile/03170439822883504372noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-67328456551812634292018-10-13T11:04:03.275-04:002018-10-13T11:04:03.275-04:00I'm runing it in 9v with a 555 charge pump, i&...I'm runing it in 9v with a 555 charge pump, i've 17,5v when the circuit is not connected, and i've a voltage drop to 14,5v when i connect it.<br /><br />Here are my voltage : <br />33172 : <br />5,1 10,2<br />5,1 . 5,1<br />4,8 . 5,1<br />0 4,8<br /><br />Pt2399<br />5 . 2,5<br />2,5 . 2 5<br />0. 2 5<br />0 . 2,5<br />2,2 . 2,5<br />2,5 . 2,5<br />0,7 2,5<br />0,7 2 5<br /><br />2206 <br />0 . 1<br />5,1 1<br />5 7,7<br />10,2 8<br />10,2 . 0<br />9,9 . 2,4<br />3,4 . 3 5<br />4,3 1,5<br /><br />Anonymoushttps://www.blogger.com/profile/17907796815515716257noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-28005460205288755082018-10-13T09:00:08.235-04:002018-10-13T09:00:08.235-04:00When i turn the depths pot, it modify the speed of...When i turn the depths pot, it modify the speed of the echo, the speed doesn't do anything and when i turn the switch in square mode, i'm losting the first signal (dry?), i've only echos.Anonymoushttps://www.blogger.com/profile/17907796815515716257noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-53108776485810590742018-10-12T16:13:54.566-04:002018-10-12T16:13:54.566-04:00Hi ! I've just finish mine ! Very good job ! T...Hi ! I've just finish mine ! Very good job ! The normal echo is working very well but the modulation doesn't work. <br />The speed knob don't have any effect.<br />Have you got an idea ? Thks !Anonymoushttps://www.blogger.com/profile/17907796815515716257noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-92133258584570204642018-08-27T12:16:22.667-04:002018-08-27T12:16:22.667-04:00 it possible to make the micro dream delay from th... it possible to make the micro dream delay from this circuit as well? I assume just include the controls for feedback delay and volume right? How could we do that?Anonymoushttps://www.blogger.com/profile/01774907147228306297noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-52199531541716722602018-07-23T02:15:49.789-04:002018-07-23T02:15:49.789-04:00Found the problem re XR2206P.. got a couple of fak...Found the problem re XR2206P.. got a couple of fake chips unfortunately so ebay'd the function generators and works well. Sinewave seems like a double step square wave (up normal down normal up ...) while square seems posi square (up normal up normal) so will play with the sinewave resistor (10k might need tweaking?)Freshahttps://www.blogger.com/profile/05730628556557439235noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-72794648047058301522018-07-01T01:39:25.088-04:002018-07-01T01:39:25.088-04:00Just built mine up everything working except for x...Just built mine up everything working except for xr2206p... Does anyone know where to get 2206 voltage readings table from?Freshahttps://www.blogger.com/profile/05730628556557439235noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-77570896808817542682018-04-09T04:45:46.904-04:002018-04-09T04:45:46.904-04:00Sw1-2 to Depth lug 2 so you can activate the depth...Sw1-2 to Depth lug 2 so you can activate the depth pot otherwise it will be all the time at full.Jiomyhttps://www.blogger.com/profile/06291325038503382912noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-27407557668537127722018-04-09T04:45:00.274-04:002018-04-09T04:45:00.274-04:00yes!
yes!<br />Jiomyhttps://www.blogger.com/profile/06291325038503382912noreply@blogger.com