[sdiy] (OT) Doepfer MIDI-CV oddity

NSSINC nssinc at hevanet.com
Wed Jan 19 20:58:33 CET 2011



Tom Wiltshire wrote:
> Do you have a schematic for this? 

No, I don't. I based it on the circuits used in PAIA stuff, except I
think I used a PC900 on the input. The output is 74HC14 schmitt trigger
inverters, with a 220R series and 220R pullup (well I guess they are
both in series, maybe there is a better name?). I'd have to pop it open
at this point to remember for sure.

	I got tired of the midi thru game, making sure thru was enabled on
everything, having to have everything on. So now everyone has their own
direct cable, except the ESQ-1...

-Al


> 
> T.
> 
> On 19 Jan 2011, at 07:12, NSSINC wrote:
> 
>> Not that this will be any help, but I have the same problem with a
>> home made MIDI splitter driving an ESQ-1. Dropped notes etc. But if
>> I patch it after going thru another keyboard's thru, it works fine.
>> And I don't have any (intentional) ground connections in the
>> splitter. Never looked into it more after I found the quick
>> "fix"...
>> 
>> -Al
>> 
>



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