control voltage to midi note message using basic stamp

Archiver

Dear Group,

I am building a midi controller and need to find out how to program
the basic stamp (1 or 2) to receive 0 - +5 control voltage and
convert that into midi note on/off messages. Any suggestions.
I am currently working on a 4 channel device.

Thanks for any help or ideas.

Bill Guess
guess@a...

Archiver

I have a board that will do this today. If you want I'll ship you the
gerber file, or possibly even a board. (I pressed 8 and I've used 4...)

The circuit is very simple. 15 I/O lines tied to +5 / ground and
appropriate midi jack, which is basically a single control line from the
stamp, and +5 from the stamp , both separated by a 220 ohm resistor.
Technically it is supposed to be optoisolated, but I just chanced that my
spare voltage wouldn't fry my synth. So far so good. If you send out
serial data at 31250 baud (actually I think I used 32768, which seemed to
work better), it's pretty easy to generate the midi protocol, it's
basically the control byte plus the midi channel followed by the arguments
(note, velocity, or sysex data...)



On Thu, 18 Apr 2002, jacksonknobs wrote:

> Dear Group,
>
> I am building a midi controller and need to find out how to program
> the basic stamp (1 or 2) to receive 0 - +5 control voltage and
> convert that into midi note on/off messages. Any suggestions.
> I am currently working on a 4 channel device.
>
> Thanks for any help or ideas.
>
> Bill Guess
> guess@a...
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>

Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc. (ServNet)
Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma - Bremerton
email: lamont@a... WWW: http://www.serv.net
"Do not fear mistakes, There Are None" - Miles Davis

Archiver

I am definitely interested in one of your boards. Sounds great
Why don't you email me at guess att.net with the at thing included.
I just tried to post you via an earlier message of yours.

Thanks,

Bill Guess









--- In basicstamps@y..., "Sean T. Lamont .lost." <lamont@a...>
wrote:



>
> I have a board that will do this today. If you want I'll ship you
the
> gerber file, or possibly even a board. (I pressed 8 and I've used
4...)
>
> The circuit is very simple. 15 I/O lines tied to +5 / ground and
> appropriate midi jack, which is basically a single control line
from the
> stamp, and +5 from the stamp , both separated by a 220 ohm resistor.
> Technically it is supposed to be optoisolated, but I just chanced
that my
> spare voltage wouldn't fry my synth. So far so good. If you send
out
> serial data at 31250 baud (actually I think I used 32768, which
seemed to
> work better), it's pretty easy to generate the midi protocol, it's
> basically the control byte plus the midi channel followed by the
arguments
> (note, velocity, or sysex data...)
>
>
>
> On Thu, 18 Apr 2002, jacksonknobs wrote:
>
> > Dear Group,
> >
> > I am building a midi controller and need to find out how to
program
> > the basic stamp (1 or 2) to receive 0 - +5 control voltage and
> > convert that into midi note on/off messages. Any suggestions.
> > I am currently working on a 4 channel device.
> >
> > Thanks for any help or ideas.
> >
> > Bill Guess
> > guess@a...
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed. Text in the
Subject and Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
>
> Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc.
(ServNet)
> Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma -
Bremerton
> email: lamont@a... WWW: http://www.serv.net
> "Do not fear mistakes, There Are None" - Miles Davis