Discussion about the Korg PolySix synthesizer

Hello all,

Curious what everyone might think of this…

Would it be safe to install the Kiwitechnics power supply upgrade if I'm not using the KiwiSix board upgrade? I checked with Murray at kiwi and he says he hasn't tested it so can't advise.

Just trying to come up with a plan to further reduce noise overall.

thanks!

jim

Hello Group,
   I designed a small pc bd that plugs in in place of the PolySix key assignerand adds MIDI note on and note off.  It can also trigger the arpeggiator using MIDI clkwith 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 usedthe same key assigner MCU.   I think it should also work in the MonoPoly, but I have no way 
to test that.

   Bob Grieb

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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 offera 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 assignerand adds MIDI note on and note off.  It can also trigger the arpeggiator using MIDI clkwith 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 usedthe same key assigner MCU.   I think it should also work in the MonoPoly, but I have no way 
to test that.

   Bob Grieb

Well, cool.
Will send $30 today.

Regarding Polysix MIDI used on the Monopoly -- I've attached other MIDI 
key assigner boards from the P6 to the MP;  one issue to be dealt with 
is the fact that the Monopoly keyboard starts on F, rather than C.

~GMM

On 4/18/2015 1:36 PM, Bob Grieb bobgrieb@yahoo.com [PolySix] wrote:
> 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
>
>
>
>

Got it.  The code checks for a diode to see which synth it's 
running in.   Guess I need to use that to change the MIDI 
numbers a little for the MP.   I will work on that when the 
need arises.
    Bob

      From: "klosmon klosmon@sbcglobal.net [PolySix]" <PolySix@yahoogroups.com>
 To: PolySix@yahoogroups.com 
 Sent: Saturday, April 18, 2015 5:07 PM
 Subject: Re: [PolySix] Low cost note-on/off MIDI for PolySix
   
    Well, cool.
Will send $30 today.

Regarding Polysix MIDI used on the Monopoly -- I've attached other MIDI 
key assigner boards from the P6 to the MP; one issue to be dealt with 
is the fact that the Monopoly keyboard starts on F, rather than C.

~GMM

On 4/18/2015 1:36 PM, Bob Grieb bobgrieb@yahoo.com [PolySix] wrote:
> 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
>
>
>
>