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 » Circuit Bending
bending Yamaha PSR-6
Post new topic   Reply to topic Moderators: dnny, v-un-v
Page 2 of 4 [88 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, 3, 4 Next
Author Message
wark_atoo



Joined: Jun 15, 2006
Posts: 2
Location: noodlesphere

PostPosted: Sun Jun 18, 2006 8:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Anyone do a pitch bend on one of these guys?
Back to top
View user's profile Send private message
EraSer



Joined: Apr 12, 2006
Posts: 82
Location: Italy
Audio files: 5

PostPosted: Sat Jun 24, 2006 8:39 am    Post subject: Reply with quote  Mark this post and the followings unread

hi Very Happy
Finally I've a keyboard to circuit bend.My girlfriend give me the permission to circuit bend her Yamaha PSS-280. kiss
RAM chip is AN90B22 18 pins and CPU is XG214BO.I 've just found 14 good bend points....but I would know which pin of RAM chip I should keep away from bending.(I've found datasheet but it doesn't tell me the pins functions)
Do you think the best think to do is bending only points on the CPU?
I would'n t damage the keyboard. Wink
Back to top
View user's profile Send private message Visit poster's website MSN Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Sun Jun 25, 2006 9:01 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi balance.
glad to hear that you got the permission to bend PSS-280

balance wrote:

RAM chip is AN90B22 18 pins and CPU is XG214BO.I 've just found 14 good bend points....but I would know which pin of RAM chip I should keep away from bending.(I've found datasheet but it doesn't tell me the pins functions)


are you sure its a RAM chip? and can you point to the datasheet, because all i did find that AN90B22 is transistor array!?

are there any other chips than the XG214BO and the AN90B22?
there should be some FM and PCM action going on inside your Yamaha.

can you take a pic of both sides of the PCB? so that we could see the traces and the chips - also a map of the "good bend points" would help.

balance wrote:

Do you think the best think to do is bending only points on the CPU?
I would'n t damage the keyboard.


there is no safe way to bending, its a gamble. but try to stay away from power lines, even 9volts can make a mess.
see> DIY - destroy it yourself

take a look > guide for safer circuit-bending

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
EraSer



Joined: Apr 12, 2006
Posts: 82
Location: Italy
Audio files: 5

PostPosted: Mon Jun 26, 2006 2:19 am    Post subject: Reply with quote  Mark this post and the followings unread

dnny wrote:

are you sure its a RAM chip? and can you point to the datasheet, because all i did find that AN90B22 is transistor array!?

Dnny
You are right. I'm not sure about AN90B22 Embarassed .I've found the same datasheet.

Quote:
are there any other chips than the XG214BO and the AN90B22?


when I open it i can see also these three chips:YM7116, MC34072P, AN7148.....but they are far from the CPU. on the contrary AN90B22 is above CPU like in your pic.

Quote:

can you take a pic of both sides of the PCB? so that we could see the traces and the chips - also a map of the "good bend points" would help.

as soon as possible.......

Quote:

see> DIY - destroy it yourself

take a look > guide for safer circuit-bending


thanks dnny.these guides will help me. Wink
Back to top
View user's profile Send private message Visit poster's website MSN Messenger
EraSer



Joined: Apr 12, 2006
Posts: 82
Location: Italy
Audio files: 5

PostPosted: Mon Jun 26, 2006 4:09 am    Post subject: Reply with quote  Mark this post and the followings unread

yES Very Happy

I've found FM chip:it's YM7116. I'm trying making connections betweent FM and CPU points .......and I can obtain strange and alien sounds! cyclops


I' will continue to try other connections....even if there's a problem:I would use a RCA patchbay but....There isn't space for it!There is the space only for switches near the first and last key.Can I use external rca module?Suggestions?examples?

balance


Track 1.mp3
 Description:
Pss 280.......sounds very good!

Download
 Filename:  Track 1.mp3
 Filesize:  1.49 MB
 Downloaded:  789 Time(s)

Back to top
View user's profile Send private message Visit poster's website MSN Messenger
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4759
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Mon Jun 26, 2006 5:52 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey Daniel,
Do you reckon this one's a goer?
I'm going to do a search on the chip at the front of the board. It's a lot bigger than the other ones, maybe it has 16 data lines? I'll let you know what I find out.


PSR75F.jpg
 Description:
 Filesize:  99.75 KB
 Viewed:  360 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

PSR75F.jpg



PSR75B.jpg
 Description:
 Filesize:  108.96 KB
 Viewed:  366 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

PSR75B.jpg



_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Mon Jun 26, 2006 11:37 am    Post subject: Reply with quote  Mark this post and the followings unread

balance wrote:
..Can I use external rca module?Suggestions?examples?


yes you can
try to fit a D25 connector somewhere and make a box whit RCA connectors something like this:
Posted Image, might have been reduced in size. Click Image to view fullscreen.
Posted Image, might have been reduced in size. Click Image to view fullscreen.

for more info visit highlyliquid.com

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Mon Jun 26, 2006 1:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Hey Daniel,
Do you reckon this one's a goer?


Hi Andrew
i think you should give it a try. it has no FM but it's sample based.
Yamaha PSS-31 has the same CPU and ROM.
also the Yamaha PSR-150, PSS-21 and PSS-11 shares the insides of PSR-75

here is Yamaha PSR-75 owners manual
maybe there is some info there.

the ROM should be crystal clocked, but i don't see any crystal so maybe it's integrated Sad

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4759
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Mon Jun 26, 2006 4:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

That light blue blob is a crystal.
_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Tue Jun 27, 2006 12:59 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
That light blue blob is a crystal.


CL1 right! I'm used to those metal cans cyclops
whats the frequency? maybe you could try over clocking and under clocking.

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4759
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Tue Jun 27, 2006 7:36 am    Post subject: Reply with quote  Mark this post and the followings unread

"8.00T" is written on it, so I assume it's 8Mhz yeah?
I'm gonna do some testing of the interconnections between the chips to see what's going on. I can't find info on either of the chips, except that the XL437 is a 16bit ROM, and that the sounds (wavetable) are generated by the other chip. This could be good, could be bad.
I'm going to force myself back to finishing the SoundLab first though.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Thu Jul 06, 2006 12:42 am    Post subject: Reply with quote  Mark this post and the followings unread

today i got a Yamaha PSR-2
inside there is the following IC's:

LA4192 (1 to 2.3W 2-Channel af Power Amp)
C4570HA (dual op.amp. 9pin slim SIP)
and YM7137 CPU (40 pin) clocked whit 3.58 crystal
haven't find any info on the CPU - if some of you have something - even a pinnouts that would be great.

i will try to find some bend points and get you some pics soon - but I'm going off for a week so that might take a while. if someone is at dour festival (Belgium) come and say hi - i'm the guy doing lights when Aavikko is playing - or in Valkhofaffaire Festival (Nijmegen, Holland)

daniel

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Thu Jul 06, 2006 1:21 am    Post subject: Reply with quote  Mark this post and the followings unread

hey balance. have you tried some easter eggs on your Yamaha?
I found this while surfing (The Easter Egg Archive)

Quote:
On early Yamaha PSS keyboards, there is a secret mode that gives sound effects to the voice selection buttons. I know for sure it works on the PSS-80 'cos I had one about 10 years ago, and discovered it myself!
This egg will put sound effects and other wierd noises on your keyboard.
1. Turn off the keyboard.
2. Hold down the LAST two keys at the end of the keyboard.
3. Whilst continuing to hold the keys down,
turn the keyboard on.
4. Enjoy the new sounds!



there is one for Yamaha GX-76:
Quote:

With the GX-76 turned off, press C2#, F2, G2# together. Then turn it on. Now move through the secret menu using the +(YES) and -(NO) buttons...


there must be others also Wink

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
EraSer



Joined: Apr 12, 2006
Posts: 82
Location: Italy
Audio files: 5

PostPosted: Thu Jul 06, 2006 11:49 pm    Post subject:   Reply with quote  Mark this post and the followings unread

WOW dnny! Shocked

really cool! Cool
I've tryed this secret mode on my PSS ....and it works!

thanks. Wink


-balance-
Back to top
View user's profile Send private message Visit poster's website MSN Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Fri Jul 07, 2006 12:28 am    Post subject: Reply with quote  Mark this post and the followings unread

balance wrote:

I've tryed this secret mode on my PSS ....and it works!

nice!
how does it sound Question

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
EraSer



Joined: Apr 12, 2006
Posts: 82
Location: Italy
Audio files: 5

PostPosted: Sat Jul 22, 2006 4:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hello
I've found a Yamaha PSS 780 I would buy:do someone know if it can be circuit bent? Or if you have it ,could you be so kind as to tell me what there is inside(CPU & FM)?.Thanks. Very Happy
Back to top
View user's profile Send private message Visit poster's website MSN Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Sun Jul 23, 2006 3:58 am    Post subject: Reply with quote  Mark this post and the followings unread

balance wrote:
Hello
I've found a Yamaha PSS 780 I would buy:do someone know if it can be circuit bent?


well it's a FM synthesizer , so at least same kind of data line tweak could be done to it as the PSR-6. It has also MIDI! and drumpads Smile
so if you have the money why not - give it a try
some info can be found here :Yamaha PSS 780 at Waranty void

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Basthian



Joined: Jun 03, 2006
Posts: 11
Location: Sweden

PostPosted: Tue Jul 25, 2006 2:41 am    Post subject: Reply with quote  Mark this post and the followings unread

Any more news about the psr-75? How bendable is it? I have an opportunity to buy one but I'm not sure.
Back to top
View user's profile Send private message
AbraC



Joined: Aug 04, 2006
Posts: 3
Location: providence rhode island

PostPosted: Fri Aug 04, 2006 1:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

i just started bending one of these. Im going to follow your build cause im new to this FM stuff. Im wondering if i can do this same kind of thing but with a yamaha fb-01 midi sound generator. Its multi timbral and has 8 yes 8 fm chips. I wonder if i could make a patchbay to mingle them all up. im trying to post a picture as an attachment, not sure if it will work.


Picture051.jpg
 Description:
 Filesize:  72.46 KB
 Viewed:  340 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

Picture051.jpg


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



Joined: Aug 04, 2006
Posts: 3
Location: providence rhode island

PostPosted: Fri Aug 04, 2006 1:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

i actually lied about the fb-01, the synth chip is ym2164, i duno about bending it. any expertise would be greatly appreciated
Back to top
View user's profile Send private message
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Sat Aug 05, 2006 5:06 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
YM2151 is Yamaha's first single chip FM synth, was implemented not only to Yamaha's FM synth keyboards such as DX-21 (1985), DX-27, DX-100 but also to arcade games/home computers. In 1984 Atari acquired legal right to use it as their arcade components. (on the contrary, Yamaha didn't allow Atari to use it for home computers.) Their "Marble Madness" is known as the first video game using YM2151, then Sega, Namco and Konami followed.

YM2164 is almost identical to YM2151. Perhaps the only improvement is multi-timbre MIDI input support. YM2164 first appeared on the SFG-05 (an advanced version of the SFG-01 which added MIDI input) and later used for the FB-01 which was designed as a standalone MIDI module version of the SFG-05. It was also provided to Korg and they used it for the DS-8 (1987) and the 707 (1988).


i think the "cutting datalines"- kind of bend should work. just find the data lines and follow the instructions ... and let us know how it went

and welcome

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
zipzap



Joined: Nov 22, 2005
Posts: 559
Location: germany
Audio files: 24

PostPosted: Wed Aug 16, 2006 12:32 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi. I just got a yamaha pss-190. Can i do something with it?
Dnny, it seems to have the same cpu that your psr-2
It´s a 40pin saying YM7137 3D and below XI257A0.
No idea what it´s doing. It´s the only chip on the whole board (exept for the audio amp).
Did you find any cool points with yours? On mine some pins seem to be unused.

_________________
http://www.myspace.com/lorolocoacousticpop
http://www.myspace.com/petrolvendor
music and transcribed jazz basslines
Back to top
View user's profile Send private message
zipzap



Joined: Nov 22, 2005
Posts: 559
Location: germany
Audio files: 24

PostPosted: Mon Aug 21, 2006 2:42 am    Post subject: Reply with quote  Mark this post and the followings unread

How about clocking slower or faster? Anyone ever tried that?
_________________
http://www.myspace.com/lorolocoacousticpop
http://www.myspace.com/petrolvendor
music and transcribed jazz basslines
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Sun Aug 27, 2006 10:21 am    Post subject: Reply with quote  Mark this post and the followings unread

dnny: What NPN transistor did you use for the LED-thingy?

btw, does anyone know where to find short RCA mono cables?

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4759
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sun Aug 27, 2006 3:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Put some shielded cable and some RCA plugs in a box with a candle and some champagne. Close the box and put on some Barry White!! Laughing
_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: dnny, v-un-v
Page 2 of 4 [88 Posts]
View unread posts
View new posts in the last week
Goto page: Previous 1, 2, 3, 4 Next
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Circuit Bending
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