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 
Live streaming at radio.electro-music.com

  host / artist show at your time
  mosc Back on the air tonight - Twyndyllyngs
Please visit the chat
 Forum index » DIY Hardware and Software » Circuit Bending
broke some buttons on a toy, please help
Post new topic   Reply to topic Moderators: dnny, v-un-v
Page 1 of 1 [2 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Jekyll



Joined: Sep 16, 2012
Posts: 1
Location: Germany

PostPosted: Sun Sep 16, 2012 2:26 pm    Post subject:  broke some buttons on a toy, please help
Subject description: last keys trigger sound of the first key in matrix
Reply with quote  Mark this post and the followings unread

I am currently tinkering with this toy:
Posted Image, might have been reduced in size. Click Image to view fullscreen.
Click to enlarge!
Pitch control and some minor other changes are working fine, but unfortunately I kind of "broke" some buttons on the toy.
Those are the keys from 6 to 10 (circled in picture), and curiously they all trigger the sound of the "Aa" key - so the 5 last buttons of the matrix all are identified as the first key of the matrix.
There are no broken connections (I am aware of), so I suspect it has something to do with how the button-matrix is scanned, or a timing-specific thing(?).
Does this behavior ring a bell for someone? Where do I have to look to find and fix the cause?
Should I provide pictures of the inside of the device, with the modifications I did?
I suspect it does not have to do with those mods, as these only affect the sound of the device,
and have nothing to do with the buttons - but I have no real knowledge of the inner workings of such toy Embarassed
Back to top
View user's profile Send private message
JingleJoe



Joined: Nov 10, 2011
Posts: 878
Location: Lancashire, England
Audio files: 14

PostPosted: Mon Sep 17, 2012 3:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds like you may have put a ribbon cable in wonky, I assume there is something like that connecting the key matrix to the main board? Could be any number of other problems though. Such is the risk with circuit bending, you allways run the risk of totally ruining the device especially without knowledge of how it works.
_________________
As a mad scientist I am ruled by the dictum of science: "I could be wrong about this but lets find out"


Green Dungeon Alchemist Laboratories
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: dnny, v-un-v
Page 1 of 1 [2 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 » 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