https://event.electro-music.com/forum/ https://event.electro-music.com/forum/viewtopic.php?p=455347#455347 Ah, good you found it! blue hell Thu, 02 May 2024 14:34:45 -0700 https://event.electro-music.com/forum/viewtopic.php?p=455058#455058 blue hells answer is correct. Sven Fri, 23 Feb 2024 08:58:25 -0700 https://event.electro-music.com/forum/viewtopic.php?p=454401#454401 I'm not sure i understand what you are wanting? Do you want LEDs to light up sort of randomly? Are you wanting to add any circuitry or do you just want to put LEDs. You may need a buffer but you might get by with a large resistor in series with a very ... CrystalWizard Mon, 25 Sep 2023 20:46:19 -0700 https://event.electro-music.com/forum/viewtopic.php?p=454292#454292 Hello Carlo :)
No problem!
I understand, it's not easy to have time sometimes :roll:

For the schematic, I was thinking of the .sch files you made to create the pcb.
Because in the zip, this file = echo.kicad_sch is a blank page.

No stress, ... dub halley Thu, 24 Aug 2023 12:43:20 -0700 https://event.electro-music.com/forum/viewtopic.php?p=454229#454229 :thumright: for correcting an error after this amount of time. I did actually build a quad MFOS VCA years ago which I never got to use much.
Not sure if I ran into any problems but maybe I'll dust it off someday and now I know where to look if it's n ... PHOBoS Thu, 03 Aug 2023 11:17:14 -0700 https://event.electro-music.com/forum/viewtopic.php?p=453911#453911 Hi, I have some problem with Dual Attack Release Envelope Generator module:

1. out of two, only one works (scheme 1)... apart from checking the tracks and component value, can you suggest me a strategy to identify the part that doesn't work?

2 t ... carlo64 Sat, 03 Jun 2023 03:04:20 -0700 https://event.electro-music.com/forum/viewtopic.php?p=453263#453263 Hey, I'm having the same issue. Did you happen to figure out what the problem was at all? rlender90 Sun, 05 Feb 2023 18:46:31 -0700 https://event.electro-music.com/forum/viewtopic.php?p=453008#453008 This is so bizarre and frustrating. I get a trigger and I get keyboard CVs that are what they should be, but I do NOT get a gate voltage (in addition to the gate LED being always on), and CVs do not linger longer than the trigger duration. Would I g ... Mark Hammer Sat, 17 Dec 2022 12:12:33 -0700 https://event.electro-music.com/forum/viewtopic.php?p=451460#451460 hello I hope you are well
I need help to troubleshoot my soundlab plus . I made the board myself and all the functions and switches work fine except for the two vco's. both produce a very slow oscillation, which is not altered by the frequency and co ... rata elektrika Tue, 15 Mar 2022 20:05:39 -0700 https://event.electro-music.com/forum/viewtopic.php?p=451311#451311 I've used the MFOS power supply for several synth cabinets for years, never had a problem. Though I have used LM317/337 adjustable regulators rather than the fixed voltage ones.

When I have used the 7912, I find it needs a minimum output current to ... Psynth Sun, 20 Feb 2022 15:53:03 -0700 https://event.electro-music.com/forum/viewtopic.php?p=450616#450616 Just out of curiosity, did you ever make any changes to your VCA for +/- 15V operation?

*cough* I only saw your post almost a year later...

Anyway - No, I didn't change anything and the VCA still works as expected :D. Bodo1967 Wed, 24 Nov 2021 03:40:06 -0700 https://event.electro-music.com/forum/viewtopic.php?p=450021#450021 Thanks for both replies, this is super helpful! bigtex Mon, 30 Aug 2021 23:37:52 -0700 https://event.electro-music.com/forum/viewtopic.php?p=449854#449854 Just a short question: Why -5V? PERFORMANCE Sun, 01 Aug 2021 12:30:30 -0700 https://event.electro-music.com/forum/viewtopic.php?p=449297#449297 Does anyone have a wiring diagram for the control panel and or a control panel layout for the single bus keyboard (the old one, with lm13900)?? I try to design one using the schematics as a guide but..my mind doesn't speak that language yet ;(

Th ... adalberto Tue, 18 May 2021 15:39:22 -0700 https://event.electro-music.com/forum/viewtopic.php?p=449104#449104 It can get very crackly at the low end of the potentiometer. I am sure you can alter the circuit to your exact needs. MFOSser Mon, 26 Apr 2021 09:25:36 -0700 https://event.electro-music.com/forum/viewtopic.php?p=448526#448526 If you get the correct notes even with a short glide time then the S&H should be functoning correct. However keep in
mind that the glide time also depends on the notes you play. Notes that are close together will have a much shorter
glide time than ... PHOBoS Tue, 16 Mar 2021 08:46:18 -0700 https://event.electro-music.com/forum/viewtopic.php?p=448477#448477 Enjoy...

https://youtu.be/EYBLVqiS_C8 abovenyquist Sat, 13 Mar 2021 23:11:16 -0700 https://event.electro-music.com/forum/viewtopic.php?p=448444#448444 Hi there,

I have one nice front panel left for the VCO in Eurorack format.
Contact me if interested.
Cheers lebarde Fri, 12 Mar 2021 07:36:12 -0700 https://event.electro-music.com/forum/viewtopic.php?p=448443#448443 Bumping up this topic.. I still have around 8 PCB of this design. lebarde Fri, 12 Mar 2021 07:34:34 -0700 https://event.electro-music.com/forum/viewtopic.php?p=448075#448075 Thank you , I might try the power supplies from here
https://www.dsl-man.de/display/DSO/Bipolar+Powersupply+BIPO
my synth has a mix of 12v and 15v modules , I have , in addition to the 0-12 0-12 chassis transformer , which I can use for the 12v ... daryll Wed, 10 Feb 2021 14:08:57 -0700