electro-music.com -> DIY Hardware and Software https://electro-music.com/forum/ 2024 Build Pictures https://electro-music.com/forum/viewtopic.php?p=455153#455153 No. 3 of the Oberheim SEM submodules, the SEM VCA as SMT version, is up and running. And again I found some specials I don't know from other VCAs and which I consider as needed for integration aspects in the SEM environment.

The VCA core itself is ...
analogmonster Thu, 14 Mar 2024 03:23:22 -0700
Euclidean rhythm generator https://electro-music.com/forum/viewtopic.php?p=455126#455126 without completely understanding the logic, was hoping there might be an easy solution for 16 steps. Nevertheless, thanks very kindly for your thoughts, and for the original post.

I just love the idea of getting this complex rhythm generator witho ...
interstellar obscure Thu, 07 Mar 2024 19:01:06 -0700
Lunetta Power Supply https://electro-music.com/forum/viewtopic.php?p=455122#455122 as long as it is a DC voltage and not too high (or low) for the chips to function you're good to go. A 9v guitar pedal supply should work fine
but make sure you check the polarity. Just as with batteries the positive output of your supply connects to ...
PHOBoS Thu, 07 Mar 2024 11:28:12 -0700
4049 hex inverter https://electro-music.com/forum/viewtopic.php?p=455110#455110 Hi Patrick.

Maybe try the hex VCA schemo below - it's an old EFM design, and looks interesting.... Haven't tried it myself.

EDIT - I guess +V is on pin 16, and GND on pin 8 , but I'm not sure how pin 1 works, as it seems to be connected to GND ...
amarello Mon, 04 Mar 2024 19:06:20 -0700
Arduino UNO R4 Minima https://electro-music.com/forum/viewtopic.php?p=455086#455086 oh an arduino with onboard DAC ? interesting

I'll try to keep an eye on this thread to see what you come it, I always like the kind of sequencing you do.

:popcorn:
PHOBoS Tue, 27 Feb 2024 08:05:46 -0700
Gyrator bandpass filter https://electro-music.com/forum/viewtopic.php?p=455062#455062 Here is an image of my unit; I used the box of an old router or something. Also a couple of sound examples with white noise. There is considerable switching noise, but that just adds to the character, I think. (I also updated the schematics; the new v ... helge-h Fri, 23 Feb 2024 12:51:40 -0700 WSG building help https://electro-music.com/forum/viewtopic.php?p=455058#455058 blue hells answer is correct. Sven Fri, 23 Feb 2024 08:58:25 -0700 CGS92 SSG LED always on on start up https://electro-music.com/forum/viewtopic.php?p=455014#455014 Recently I finished building a CGS92 SSG. The problem is that on start up the LED on the stepped side is on and there is voltage present on input and output. 0.20v on the Input and 1.29v on the output.

I made it with an LM13700 instead of the CA308 ...
de:Beer Thu, 15 Feb 2024 13:44:19 -0700
Krautrock Phaser Mod = Voltage Control Input https://electro-music.com/forum/viewtopic.php?p=454984#454984 Here's the Krautrock Phaser CV controlled via Vactrol.

Controlling via programmed trigger points turned out a bit better AND adding an envelope between the trigger points and Phaser-control was a must!

Youtube demonstration:
https://www.youtu ...
jacobsteel Sun, 04 Feb 2024 11:42:09 -0700
YAMAHA PSR6 CERTAIN NOTES DO NOT WORK IN ALL OCTAVES https://electro-music.com/forum/viewtopic.php?p=454982#454982 Good job! airlock Sat, 03 Feb 2024 17:13:14 -0700 phobos 4 input mixer https://electro-music.com/forum/viewtopic.php?p=454981#454981 UPDATE[...]

Ah yes that reminds me .. after forgetting to connect power lines .. all the time ... or after connecting them to the wrong pins .. i started using sockets for ICs .. and measuring the power lines before inserting the ICs. ... unless ...
blue hell Sat, 03 Feb 2024 12:15:29 -0700
Electro-Music Klee Sequencer Build and Applications Thread https://electro-music.com/forum/viewtopic.php?p=454973#454973 Thanks for the feedback. I'm thinking of donating them to the TEMPO non-profit non-profit organization. They could use it as a fundraiser, perhaps.

Someone made a nice front panel. I wonder if they are still available, or at least the art work.
mosc Fri, 02 Feb 2024 12:01:12 -0700
Replacement screws/hardware for Roland Alpha Juno? https://electro-music.com/forum/viewtopic.php?p=454972#454972 Let's say you were working on your Roland Alpha Juno 1 and took it apart for cleaning. Then things happened, yada yada yada, you never finished it and probably lost track of all of the screws and hardware that kept the keyboard together.

How would ...
hyperstationjr Fri, 02 Feb 2024 11:32:49 -0700
Simple way to decay a sound https://electro-music.com/forum/viewtopic.php?p=454957#454957 I have build 8 steps sequencer using 40106, 4040 and 4051 (See attached schematics)

However I would like to make it more 'musical' by adding a decay for each note that is playing.

What is the simplest way to implement that?
Any suggested schema ...
R_Gol Sat, 27 Jan 2024 11:11:49 -0700
AS3394 6-voice Synthesizer for DIY https://electro-music.com/forum/viewtopic.php?p=454941#454941 Please help.

How can I obtain PCBs for this project?
Is the only option to laser print the PDFs and then do an etch?
I do not live in a location where I can do etching.

Aside for trying to reverse engineer the layers into gerbers, is there ...
blakeAlbion Thu, 25 Jan 2024 07:36:44 -0700
What tools to tighten nuts? https://electro-music.com/forum/viewtopic.php?p=454940#454940 https://lovemyswitches.com/rocket-sockets-pedal-building-socket-set/

Been using these for a few years now. Excellent tools.
Return 2 sendeR Wed, 24 Jan 2024 09:55:44 -0700
Lay Some Content On Me https://electro-music.com/forum/viewtopic.php?p=454928#454928 This sub forum should be getting daily posts from y'all - come on guys! wallybob Sun, 21 Jan 2024 09:45:44 -0700 LM3900-Fu https://electro-music.com/forum/viewtopic.php?p=454924#454924 I'm very late to this party, but I have a blog which is about the title of this thread:
https://beyondan72.blogspot.com/
uniqview Sat, 20 Jan 2024 01:14:38 -0700
Paia EK-7 Digitizer (4 Bit ADC) https://electro-music.com/forum/viewtopic.php?p=454887#454887
Makes me wonder if it is possible to construct something like this but with a gray code output.

https://www.analog.com/media/en/training-seminars/tutorials/MT-025.pdf
elektrouwe Tue, 09 Jan 2024 08:33:20 -0700
Datasheet for SN76488N https://electro-music.com/forum/viewtopic.php?p=454868#454868 Here.

Thanks :)
orby Fri, 05 Jan 2024 03:35:57 -0700