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
Ace Tone Rhythm Ace FR-3
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 2 of 2 [41 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Goto page: Previous 1, 2
Author Message
fonik



Joined: Jun 07, 2006
Posts: 3762
Location: Germany
Audio files: 23

PostPosted: Sat May 15, 2010 8:42 am    Post subject: Reply with quote  Mark this post and the followings unread

peng wrote:
fonik wrote:

peng, these diagramms on the left side are elektor schematics, NOT the original ace tone schematics. the elektor magazine changed these parts in order to make them easier to built for their readers. these partly schematics are in a seperate box for exaclty this reason...


Would it be obvious to me if I could read German? Embarassed

not at all! i misunderstood it, too. Laughing it took a while until i got it. i was so focused ont he schematics that i did not read thru the test carefuly...

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
ericcoleridge



Joined: Jan 16, 2007
Posts: 885
Location: NYC

PostPosted: Wed Oct 05, 2011 1:27 am    Post subject: Reply with quote  Mark this post and the followings unread

Fonik,

Did u ever find a solution for extracting a trigger here?
Back to top
View user's profile Send private message
fonik



Joined: Jun 07, 2006
Posts: 3762
Location: Germany
Audio files: 23

PostPosted: Wed Oct 05, 2011 10:58 am    Post subject: Reply with quote  Mark this post and the followings unread

i wanted to tackle this machine soon, therefor i printed out all docs that i have already.
i am even thinking of powering it from 15V to 0V instead of 0v to -15V. will have to take a closer look at the power lamp before...

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
mars



Joined: Apr 20, 2007
Posts: 8
Location: berlin

PostPosted: Fri Jul 20, 2012 12:27 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm picking up an FR-2L and intend to add triggers.
There's a good run-down here:
http://www.circuitbenders.co.uk/newsarchive/BRA.html

However I can't find the schematics, for my model or any of the similar ones. From elektor magazine I can only get hold of the index of old issues!

Anyone got a link, or care to PM me?

cheers!

/m
Back to top
View user's profile Send private message
tony void



Joined: Apr 26, 2011
Posts: 38
Location: Parma, Ohio

PostPosted: Mon Nov 26, 2012 12:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

http://www.youtube.com/watch?v=g_QigKQpWos&feature=youtube_gdata_player
Back to top
View user's profile Send private message Visit poster's website
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Tue Apr 22, 2014 10:54 am    Post subject: Reply with quote  Mark this post and the followings unread

hello and sorry for warming up this old thread... i own a Roland Tr77 for several years and this weekend i opened it to get something useful out of it...
so far i have 2 Trigger/clock outs' for which i used u,v,w,x,y pads which are square waves of about 12-15 Volts... fed These into an lm358 on single supply and converted them to 5V/GND signals those labelled with an ' (the inverted ones or vice versa) via a 5 range Switch and those normal via 5 simple Switches on/off to another clock Output...
the neat thing with the last ones is that you can create some rhythmic pattern by switching 2 or more of them on... so you have variable gate lengths on that output... maybe 3 short and 1 Long step...

what now interests me is if someone included successfully an external clock to his Roland TR77 or even Ace Tone...

got my oscilloscope on the base of Q1 and it shows me a squarish wave with an rising edge wiggling around +1V and -4V or so...
so i don't really know what to fed at this Point if this is the correct one and don't want to start experimenting with it before i asked if anyone already found a solution...

as far as it Looks the master clock is fed to the flip-flops and Diode Matrix via D1 ... how have you connected you external clock? seems as the trace between Q1 base and D1 must be cut and the both clock signals routed via Switch to d1 correct?

cheers bastian
Back to top
View user's profile Send private message
adambaby



Joined: Nov 18, 2009
Posts: 10
Location: Queensland, Australia

PostPosted: Tue Apr 22, 2014 6:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

I added external sync to my TR77 years ago. Perhaps some of the info at the bottom of this page may help you...
http://www.adambaby.com/studiotech_TR-77.html

_________________
Adam Inglis
A Disco Ate My BABY!
www.adambaby.com
Back to top
View user's profile Send private message Visit poster's website
fonik



Joined: Jun 07, 2006
Posts: 3762
Location: Germany
Audio files: 23

PostPosted: Tue Apr 22, 2014 11:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

and i sold my FR-3 before modifying anything...
_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Wed Apr 23, 2014 11:47 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Adam, thanks for your fast reply.

Have tested now the clock out of my sequencer on R4 > expecting all my hopes of success blown away in a big cloud of smoke surrounded by lightning...nothing of that happened and my tr77 is still working... Smile the result was slow change in tempo when my sequencer was at full speed (speed on tr77 at it's slowest) this also sounded sometimes a bit out of step
as far as i remember the clock Signal on my MFB Uhrzwerg was much faster than on my Oberkorn MKII... will have to test that soon with my Uhrzwerg...

then with snyc out from tr606 that worked better but i have to send the clock to a divider first... Q2 (works best for me) or Q3 of a 4024 divider chip sound okay... it's maybe not the state of the art because it ometimes get out of step but it works... fine Smile

have here a short and lousy clip of my tr606 in sync with the tr77... high tom and closed hihat from 606... later on a oscillator is connected driven by sequencer with variations of the flip-flop Outputs (U-Y) as described in my post above... usually a 4 step pattern on my sequencer but sometimes when switching one of the signals in at an given Moment the sequencer ignores the reset to step 1 command... but that's just a matter of timing when you push the switch.. the other time it's out of sync that's when i switched to clock at the Q3 Output from the 4024... this works better at antoher scale of the 606...

also i think i will do add sometime a patch matrix to create my own drum patterns... like that idea a lot... but first have to look for another top plate as this wooden thing is way to thick to stick anything through it... maybe have to re-arrange the lyre or note holder on top for the unexpected case that i can read notes sometime... or just throw it in the garbage...

@fonik ... there are still a lot of them floating around for cheap so maybe soon or anytime you'll maybe get back to it... but honestly i have to thank you for pointing me with your thread into the right direction... Wink


tr77sync_0.mp3
 Description:

Download
 Filename:  tr77sync_0.mp3
 Filesize:  1.92 MB
 Downloaded:  125 Time(s)

Back to top
View user's profile Send private message
fonik



Joined: Jun 07, 2006
Posts: 3762
Location: Germany
Audio files: 23

PostPosted: Wed Apr 23, 2014 2:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

wackelpeter wrote:
... there are still a lot of them floating around for cheap so maybe soon or anytime you'll maybe get back to it...

if there were that many i wonder why i was able to sell mine for 250.-EUR!? Shocked
(maybe good pictures and a well written text based on some thorough internet research helped a lot)

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Thu Apr 24, 2014 6:50 am    Post subject: Reply with quote  Mark this post and the followings unread

some months ago i was unsure if i would sell my tr77 and looked a bit at ebay from time to time and they didn't go for high Prices... 1 or 2 under 100 Euro and none of those i followed hit the 200 euro bar...

Maybe it's not as pricey nowadays as now there are a lot of drum computers released on market for reasonable prices...
Back to top
View user's profile Send private message
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Thu Jul 24, 2014 12:34 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just received today a big load of banana sockets to make my dream of a patchable TR77 come true...

but unfortunately whilst checking the Trigger signals for each voice i discovered that a few voices out of the "noise generator section " didn't work...
SD and HH were okay but maracas, tambourine and cymbal didn't work so far...
have checked the signal after the diodes (D310 to D314) that are placed at the collectors of the transistors (Q1-Q7) (referring to the service manual) and got a positive pulse at those who worked but not at the others... so i guess i fried those trannies when i first played around with the board when i added i a first step ext.clock in and clock out...

those trannies are 2sc372-y and a quick WWW research turned out that 2SC458 or 2sc945 could be used as substitutes... is this and is my guess of those destroyed trannies correct?

_________________
https://soundcloud.com/bastian-j
Back to top
View user's profile Send private message
Starspawn



Joined: Jun 14, 2013
Posts: 49
Location: Oslo

PostPosted: Fri Jul 25, 2014 3:34 pm    Post subject: Reply with quote  Mark this post and the followings unread

Isnt a couple of the voices inverted triggers?
I rememeber I checked the details and someone described that so check a little more for people describing mods to it (which I searched for then) and you might find it.

Dont think that was those though, so you may be right.

Hmm, are all voices used in all sets? Might also be an issue?
Back to top
View user's profile Send private message
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Fri Jul 25, 2014 10:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hey Starspawn,

thanks for your reply.
All voices are triggered by negative spikes/pulses except the guiro which is triggered by positive square pulses.
I have downloaded the service manual and there is the logic matrix chart and a list which rhythms use which voices.
Even at those who use them they didn't work...
normally you can Trigger each voice no matter which rhythm is selected when you have no rhythm selected and simply hit the start button.

_________________
https://soundcloud.com/bastian-j
Back to top
View user's profile Send private message
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Sat Jul 26, 2014 9:18 am    Post subject: Reply with quote  Mark this post and the followings unread

Seems as i have to go for the 2SC substitutes... have checked today if i could also use a BC548 or BC547 and must realize that the 2SC372 has it's base on the outside leg and unfortunately the trannies are mounted on the PCB with all legs close in line so there's not a chance to just place them backwards and bending 2 legs...

any other hints which characteristics must be equal for my substitutes besides:
max Power Assumption ,NPN, Ucbo, Uceo,Uebo and Ic?

_________________
https://soundcloud.com/bastian-j
Back to top
View user's profile Send private message
wackelpeter



Joined: May 05, 2013
Posts: 64
Location: germany
Audio files: 8

PostPosted: Wed Sep 03, 2014 9:22 am    Post subject: Reply with quote  Mark this post and the followings unread

took me a while before i got my "wishlist" filled up and ordered some parts at Reichelt...
Among them where the 2sc458 trannies as substitutes for those 2sc372 trannies... changed them on the 3 voices that wont Trigger and voila it works... Smile and they're pin compatible...

now my modular tr77 is almost complete... patchbay for 13 voices except guiro (which sounds i didn't like that much) including all the Trigger Outs from the logic board... ext. clock in and 2xclock/Trigger out with variable clock rate and divisions...

maybe i'm going to add an ext.gate/Trigger to -12v spike converter to Trigger some voices with an external gate...

_________________
https://soundcloud.com/bastian-j
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 2 of 2 [41 Posts]
View unread posts
View new posts in the last week
Goto page: Previous 1, 2
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software
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