electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software » YuSynth
ADSR threads
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
koenpepping



Joined: Jun 25, 2014
Posts: 8
Location: utrecht NL

PostPosted: Wed Jun 25, 2014 3:31 pm    Post subject: ADSR threads
Subject description: some threads
Reply with quote  Mark this post and the followings unread

Hi,

First of all thanks for the designs.
I've built the noise gen, sample and hold and some mixers they work great!

Now I have build the ADSR envelope generator, but the sustain is always full 10v. (so i don't know if the decay is working). attack and release work fine inverted works also.

also the led isn't working (i measure 0.5v without gate, and 0.7v with gate), changed r22 to 470r doesn't work voltage stays the same. (led works fine on a battery btw)

I tried this:

replace the tl074 and 7555 by new ones
checked the wiring multiple times
measured connections and paths
checked all components on value
ic's aren't heating

nothing solved the problem so far.. any idea, tips or suggestions?

thanks already!
Back to top
View user's profile Send private message
capicoso



Joined: Nov 19, 2012
Posts: 127
Location: Argentina

PostPosted: Wed Jun 25, 2014 11:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

If you built new version, -i think it's not fixed in the pcb drawing yet-, to fix the led: the diode before the led is backwards, so take it off and put it the other way around.
Back to top
View user's profile Send private message
koenpepping



Joined: Jun 25, 2014
Posts: 8
Location: utrecht NL

PostPosted: Thu Jun 26, 2014 12:59 am    Post subject: Thanks! solved the led problem. Sustain is still a problem Reply with quote  Mark this post and the followings unread

capicoso wrote:
If you built new version, -i think it's not fixed in the pcb drawing yet-, to fix the led: the diode before the led is backwards, so take it off and put it the other way around.


Great reply thank you! that solved my led problem!

the sustain however is still in full sustain level the led indicates this as well.. so that problem is still unsolved.

thanks again!
Back to top
View user's profile Send private message
koenpepping



Joined: Jun 25, 2014
Posts: 8
Location: utrecht NL

PostPosted: Thu Jun 26, 2014 1:51 am    Post subject: Solved! it works great! Reply with quote  Mark this post and the followings unread

I turned the attack, sustain and release to 0%. the decay was set to +-50%
and the decay started to work. after the doing that it works perfect!

changing the diode worked perfect.

it looks totally nice on my scope but I still don't have an vca/vco/filter or something to control with my envelope generator so thats my next project!

Thanks!
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » YuSynth
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use