welcome to the wonderful world of wacky keys and weird sounds...
WarrantyVoid
the site for modification and collecting
of small music keyboards and electronic sound toys

Circuit-bending is the art of hacking, modifying and abusing the hardware of cheap electronic sound toys or such keyboards ("tablehooters") in totally different ways than their manufacturer has intended - namely as experimental musical (or not so musical) instruments. This can result in such odd things like converting a battery operated baby toy duck into a tekkno synthesizer, though circuit-bending can be basically regarded as a cyberage's anarchic successor of phono record scratching. Much like record scratching only got possible by systematically ignoring all grannies warning: "Don't touch the precious gramophone discs with your smeary, sweaty fingers!", the same way circuit-bending lives from systematically ignoring any "warranty void" warning stickers on its explorative mission to boldly hear what no man has heard before...

The TableHooters modification FAQ

In this FAQ you can find many tips, tricks and explanations about circuit-bending.

My tablehooter hacks and collection

Here you find pictures and info about my collection of more or less circuit-bent instruments, their most interesting features, what I found out about their hardware and which eastereggs I discovered. Also instruments constructed by me are here.

keyboard software media

This page lists my collection and general info about music cartridges and other original software media for electronic musical instruments.

Wanted...

Here is a list of keyboards I want to buy and accessories I am still looking for.

Links page

Here are some weblinks to other sites about electronic keyboards, synthesizers, sound toys and circuit-bending.
Site News:
update 2025-12-15
I have finally finished a comprehesive hardware analysis of almost every 1980th and early 1990th Casio home keyboard and musical calculator hardware class, including keyboard matrix and IC pinouts. (If you need more tech info or PCB photos, e-mail me.) I also made a detailed analysis of early Medeli (MC-3 variants with DSG or FM sound) and Angeltone (HBATEC) keyboard hardware families. And I analyzed various analogue and squarewave Yamaha (e.g. PS-30, PS-2) and plenty of italo (Bontempi etc.) keyboards and some others. I also added more and better photos and I did a big update of the WarrantyVoid FAQ, the keyboard software media page and some weblinks.

Last but not least I detailedly described the truly bizarre Soviet Russian midi keyboard prototype Arton IK-51 (with PCB photos, IC identification, some history bits etc.).

older news

As far not mentioned otherwise, all contents of this website is copyrighted by CYBERYOGI =CO=Windler and must not be used commercially without my explicit written permission. If you wish to publish parts of it elsewhere, e-mail me. Pictures those are marked as taken from the internet are used here for educational purpose only. All shown brand names and logos of musical instrument manufacturers etc. are property of their owners; they are not affiliated with this site. You can not place ads on my website.
 
 last updated: 2025-12-15 
 site created by CYBERYOGI =CO=Windler
  (teachmaster of LOGOLOGIE - the 1st cyberage-religion!)
to =CO=Windler
  
 
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