http://electro-music.com/forum/ http://electro-music.com/forum/viewtopic.php?p=383803#383803 Hi everyone,
I have just finished to scketch the PCB of the Ring Modulator (version for 'Erthenvar' jacks).
If someone would like to help me check it, here is the preview ... The 150K Input2 is to be soldered on the side of the tracks .... The 5K6 a ... furio Fri, 10 May 2013 10:34:40 -0600 http://electro-music.com/forum/viewtopic.php?p=383092#383092 I did all the optional bits listed on that stripboard layout, and I have extended the circuit in several ways beyond those.

1) I inverted the 555 clock so that I got a positive going pulse (simple transistor inverter).
2) I added AND circuitry so ... elmegil Sat, 27 Apr 2013 08:17:16 -0600 http://electro-music.com/forum/viewtopic.php?p=382763#382763 Thanks for the reply PHOBoS!

It might be a few days before I get the chance to try it, but I really like the idea of attaching an audio source to the second half of the circuit! That would at least rule out that portion of the circuit as the culpri ... Groverradagast Mon, 22 Apr 2013 00:10:30 -0600 http://electro-music.com/forum/viewtopic.php?p=382722#382722 You're quite welcome :-)

And thanks for that link Roger, that looks very useful. elmegil Sun, 21 Apr 2013 06:54:31 -0600 http://electro-music.com/forum/viewtopic.php?p=382519#382519 Ok, thanks! mirri Wed, 17 Apr 2013 06:29:01 -0600 http://electro-music.com/forum/viewtopic.php?p=382080#382080 Thanks for the compliments Speedy RB. I build everything onto stripboard but not everything gets to be a presentable illustration worth posting. Most of the circuits I have made are either hand drawn on paper or in a crude form drawn in Illustrator. ... Speedy RB Tue, 09 Apr 2013 11:00:44 -0600 http://electro-music.com/forum/viewtopic.php?p=381928#381928 You know Nardu ... hats off ...
Thank you! (Ви благодариме! )
In romanian, we say = jos palaria ! (also common expression) = капи исклучување (machedonian google translation : I hope is good !) = hats off.
- Here, n ... Nardu Sun, 07 Apr 2013 13:41:00 -0600 http://electro-music.com/forum/viewtopic.php?p=381906#381906 I have been thinking about constructing a classic Monosynth, like a smaller Moog synth in a semi modular form like a 2600. Then offering it as a kit of PCB, Parts and Maybe a faceplate. Is anyone interested in this?

I would aim at something lik ... Gaetano_AU Sun, 07 Apr 2013 00:44:58 -0600 http://electro-music.com/forum/viewtopic.php?p=381380#381380 I realized this has been covered quite a bit and I've been searching through the suggestions, but I'm still having a hard time finding a program I'm happy with.

I started with Eagle which is nice, but the free version (and even the hobbiest version ... gdavis Thu, 28 Mar 2013 18:24:08 -0600 http://electro-music.com/forum/viewtopic.php?p=380713#380713 can someone tell me if the VCA is usefull to switch control voltages?

Cause I am searching for a simple VCA design that could switch LFOs but also some audio oscillators for sick frequency modulation.

Xonrad synthesist Tue, 19 Mar 2013 16:19:20 -0600 http://electro-music.com/forum/viewtopic.php?p=379983#379983 Well, it turned out i'm an idiot. After building a complete new 808 BD pcb from scratch that DID work i found that... I connected the output wire to the wrong pin of my output socket.

so now i have 2 fully working 808 BD's ;-) But thanks for your r ... gerbster Thu, 07 Mar 2013 06:44:19 -0700 http://electro-music.com/forum/viewtopic.php?p=379122#379122 at muffs is a simmilar treat now. i hope its ok to share it on both forums.


http://www.muffwiggler.com/forum/viewtopic.php?t=21611&postdays=0&postorder=asc&start=0 citric acid Thu, 21 Feb 2013 02:37:23 -0700 http://electro-music.com/forum/viewtopic.php?p=378580#378580 Any chance of getting this to work with a resistor voltage divider.

Iam really not fond of +/- voltage personally i feel if the circuit can work with just positive voltage it should be designed that way.


Although this might just be me not wan ... ElektroBear Wed, 13 Feb 2013 14:45:46 -0700 http://electro-music.com/forum/viewtopic.php?p=378578#378578 By far the easiest stripboard layout editor i've found :) and i tend to design most of my pcbs with it aswell :) ElektroBear Wed, 13 Feb 2013 14:38:43 -0700 http://electro-music.com/forum/viewtopic.php?p=378324#378324 If you have a HFA3046 SOIC 14 package - http://www.intersil.com/content/dam/Intersil/documents/fn30/fn3076.pdf ,
use a little piece of striboard 0.5x0.5 inch - 12.7x12.7 mm to adapt the HFA3046 SOIC 14 to DIL14 Nardu Sat, 09 Feb 2013 19:39:22 -0700 http://electro-music.com/forum/viewtopic.php?p=378128#378128 SEM Type VCF as in Wildcat by EFM ,it's the same ,the only difference is the 10K resistor going from the collector of the exponential converter into the LM13700 ,as in 4600 version here : http://electro-music.com/forum/phpbb-files/efm_4600_doc_01_15_8 ... vladosh Thu, 07 Feb 2013 05:19:19 -0700 http://electro-music.com/forum/viewtopic.php?p=377992#377992 Hey guys. I just got this all uploaded on my site
Voltage Controlled Scanner/Switch at AniModule.com

I posted the:
schematics
TopPlace
BottomPlace (there's a few SMD Components. The caps and resistors are 1206 and the ICs are SOIC. I s ... JRock Tue, 05 Feb 2013 10:43:10 -0700 http://electro-music.com/forum/viewtopic.php?p=377557#377557 How would one adjust this shematic for +/- 12V? Thank you mrkva Wed, 30 Jan 2013 10:09:25 -0700 http://electro-music.com/forum/viewtopic.php?p=377320#377320 have been working today on hexinverters battery acid
anyone see any faults?





http://cv.hexinverter.net/?projects=batteryacid-v10
https://dl.dropbox.com/u/15996745/da/WXP_driver/eagle.rar Mirmite Sun, 27 Jan 2013 10:21:00 -0700 http://electro-music.com/forum/viewtopic.php?p=377011#377011 Check out the solution that Fonik used for this:

http://electro-music.com/forum/viewtopic.php?t=55470

Thanks! That was a big help. Nice way to avoid cables. I managed to find the sockets at mouser. Now I'll try to find some pots and switches. bingmachine Tue, 22 Jan 2013 14:42:34 -0700