[sdiy] How to add MIDI IN to an old Casiotone 101

[Ullrich Peter]

Hi Roman!

Yes, this one works fine. It is based on Bojans first version, I just added the hex switch for setting the midi channel via switch and not via midi messages. I changed the layout and Bojan adapted his software.

Most cheap interfaces for these synths work that way as it is the cheapest method. And it works stable.

Can be used for polysix and I think also Poly62 without changes.

Ciao
Peter

http://www.ullrich.at.tt
http://synpro.heimat.eu/datadial.htm (Synth Addon)

________________________________________
Von: synth-diy-bounces at dropmix.xs4all.nl [synth-diy-bounces at dropmix.xs4all.nl]" im Auftrag von "Roman Sowa [modular at go2.pl]
Gesendet: Sonntag, 29. Dezember 2013 13:02
An: synth-diy at dropmix.xs4all.nl
Betreff: Re: [sdiy] How to add MIDI IN to an old Casiotone 101

there are at least a few circuits to do exactly that, from CHD
ELEKTROSERVIS or Kenton and many others.

this one is purely-DIY, in contrary to many commercial, ready to use kits:
http://www.angelfire.com/geek/srlabs/p6retro2.html

works wth 8x8 matrix, but you can customize it

Roman


W dniu 2013-12-29 12:23, Jack Jackson pisze:
> I have this old board, it's provides quite basic digital sounds from an NEC D990G chip. As far as I can tell, this chip also performs the matrix scanning of the keybed.
>
> So if one were to add MIDI to it, this is how I envisage it:
>
> 1. MIDI note-on message received
> 2. Microcontroller interprets note and uses a look-up table to tell it which position of the matrix this note fits.
> 3. Microcontroller waits until the switch for the notes row goes high
> 4. Microcontroller sends the correct pin high for that note.
> 5. Pin stays high until note-off is received.
>
> So the micro would have to sync (or at least follow) the onboard chips scanning and just output the 5v for that note at the correct time.
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy



The information contained in this e-mail message is privileged and confidential and is for the exclusive use of the addressee. The person who receives this message and who is not the addressee, one of his employees or an agent entitled to hand it over to the addressee, is informed that he may not use, disclose or reproduce the contents thereof, and is kindly asked to notify the sender and delete the e-mail immediately.