Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [PolySix] Low cost note-on/off MIDI for PolySix

From: Bob Grieb <bobgrieb@yahoo.com>
Date: 2015-04-18

I should add that my design does not use SMT chips,
to ease construction, so it is larger than a 40-pin DIP
package and overhangs the socket.   That's why there
are two versions, since the layout of the Poly61 is different.
If there is interest, it probably makes more sense for me to offer
a complete kit of parts, to save S&H on the other bits.   But you
would need to assemble it.  Also, you would need a MIDI
jack on the back of your synth.

   Bob

From: "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
Sent: Saturday, April 18, 2015 4:36 PM
Subject: Re: [PolySix] Low cost note-on/off MIDI for PolySix

 
Hello Group,

   I designed a small pc bd that plugs in in place of the PolySix key assigner
and adds MIDI note on and note off.  It can also trigger the arpeggiator using MIDI clk
with various divide rates.   MIDI channel and divide rate are set by holding down a key
at power up, and are saved in EEPROM.  No other features are added.   No MIDI output
is provided by my design. 

    If anyone is interested, I can supply either a pc bd, or a pc bd and a programmed PIC
chip if you want to build one.   I don't plan to offer assembled boards.   The pc bd plus
programmed PIC chip is $27 + $3 S&H to USA addresses.   The other parts to build up
a board would cost another $10 or so, plus S&H from your supplier.

   I actually have two versions, one for the PolySix and one for the Poly61, since they used
the same key assigner MCU.   I think it should also work in the MonoPoly, but I have no way
to test that.

   Bob Grieb