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 Forum index » DIY Hardware and Software » Circuit Bending
Before I fry it - Casio MT-205 bends?
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atomforce80s



Joined: Feb 13, 2021
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PostPosted: Sat Feb 13, 2021 5:46 pm    Post subject: Before I fry it - Casio MT-205 bends? Reply with quote  Mark this post and the followings unread

So I've seen this one bent and thought it would be a good first bend. Anyone have any links to photos/connections/etc?

I got my feet wet by building 2 simple IC electronic keyboards (555 & another pre-built board synth) and just finished successfully modifying a MIDI controller. Got soldering down, basic knowledge, but I could really use a cheat sheet or map for the MT-205 if it exists.

Thanks in advance!
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MusicMan11712



Joined: Aug 08, 2009
Posts: 1073
Location: Out scouting . . .

PostPosted: Sun Feb 21, 2021 1:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

I seem to remember running across a site that had a lot on Circuit Bent Casios. I took a quick look (online and in my bookmarks) but couldn't find the link.

I actually have a Realistic Concertmate-700 (unbent, in fact never opened up).

If I find the link, I will add it here.
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PHOBoS



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PostPosted: Sun Feb 21, 2021 2:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

welcome party!

a quick search gave me these 2 images but they are probably not very useful
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.

they come from the Ok Housecat site: http://www.okhousecat.com/casiomt205

note that circuit bending is not without risk so only do it on something that isn't important to you unless you have a really good well tested guide.


MusicMan11712 wrote:
I seem to remember running across a site that had a lot on Circuit Bent Casios. I took a quick look (online and in my bookmarks) but couldn't find the link.

was it casper electronics ? apparently the site is under sonstruction http://www.casperelectronics.com/

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richardc64



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PostPosted: Thu Feb 25, 2021 8:17 pm    Post subject: Reply with quote  Mark this post and the followings unread

MusicMan11712 wrote:
I seem to remember running across a site that had a lot on Circuit Bent Casios. I took a quick look (online and in my bookmarks) but couldn't find the link.

I actually have a Realistic Concertmate-700 (unbent, in fact never opened up).

If I find the link, I will add it here.


Probably this:
http://www.weltenschule.de/TableHooters/instruments.html

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MusicMan11712



Joined: Aug 08, 2009
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Location: Out scouting . . .

PostPosted: Sat Feb 27, 2021 12:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

richardc64 wrote:
MusicMan11712 wrote:
I seem to remember running across a site that had a lot on Circuit Bent Casios. I took a quick look (online and in my bookmarks) but couldn't find the link.

I actually have a Realistic Concertmate-700 (unbent, in fact never opened up).

If I find the link, I will add it here.


Probably this:
http://www.weltenschule.de/TableHooters/instruments.html

YUP!!! That's it!!! Smile He doesn't have the MT-205 or the Concertmate-700, though. Sad

Just found the MT-205 User Manual here https://soundprogramming.net/keyboards/realistic/realistic-concertmate-700/. Not sure if I knew that it (or the Realistic version) had drum pad trigger jacks. If there are other Casio models with schematics that have the drum pad triggers, maybe it would be useful to help sort out the MT-205 Circuit. (Just a thought.)

I don't know anything about this company, but evidently they are selling the Concertmate-700 service manual for $15 (USD): http://www.vintagemanuals.com/manual/Radio+Shack/42-4007%2C+Concertmate+700

BUT WAIT: Another site says that the MT-205 is the Casiomate-680: https://www.circuitbenders.co.uk/forum/forums.html?topic=1393.0 Never mind An online picture of the Concertmate-680, doesn't look at all like the MT-205 in the user guide. So much for circuitbenters.co.uk. Sad

Just wondering how much overlap there is with different models. For example, see the last paragraph here: http://weltenschule.de/TableHooters/Casio_MT-520.html. "A smaller Casio MT-520 variant with only 4 drumpads was released as Casio MT-220 and without drumpads as Casio MT-205 (both without rhythm tracks mute)."

Since the MT-205 has jacks for external drum pads or sticks (4 pads/sticks with two triggers per jack) perhaps there is some similarity with the MT-250 which has the pads built in.
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