Hi James,
I'd be interested to see your expansion circuit if possible, sounds like a cool addition to the 152! Would it be possible to email it to me or drop it into the file box
Thanks,
Charlie
--- On Mon, 4/2/13, James Husted <
james.husted@...
> wrote:
From: James Husted <
james.husted@...
>
Subject: Re: 1 Can I mod a A-152 to do this
To:
Doepfer_a100@yahoogroups.com
Date: Monday, 4 February, 2013, 18:26
Forgot - no attachments in this forum! basically The thing I attached was a transistor circuit (2N5088) and some resistors and a LED to drive the output jack. It should isolate the processor fine. I will attach it to the expansion header so no mods to the board itself. That is why I asked about what else is on that header. Might as well bring out whatever I can since I will be making a panel for it.
-James
On Feb 4, 2013, at 10:21 AM, James Husted
james.husted@...
> wrote:
> Thank You Dieter! I was sure that something like this was available. I will probably make something like this to attach to it:
>
>
>
> Nice that it is on an expansion connector too. What else shows up on that expansion connector
> -James
>
>
> On Feb 4, 2013, at 1:26 AM,
yahoo@...
wrote:
>
>>
>>> -----Ursprungliche Nachricht-----
>>> Von:
Doepfer_a100@yahoogroups.com
>>> [mailto:
Doepfer_a100@yahoogroups.com
]Im Auftrag von James Husted
>>> Gesendet: Samstag, 2. Februar 2013 08:41
>>> An:
Doepfer_a100@yahoogroups.com
>>> Betreff: 1 Can I mod a A-152 to do this
>>>
>>>
>>> I recently got an A-152 and am using it to select the columns of
>>> two of my PGM-4X4 programmers to make sequences that can have
>>> programmable patterns to them. What I would like is to mod the
>>> A-152 so that I can add an output that produces a trigger
>>> whenever the A-152 addresses a new step. This way something like
>>> a sine wave into the A-152 would make the PGM-4X4 work like a
>>> pendulum and would also produce triggers to fire off envelope
>>> generators whenever a new address/column/note happened. Is there
>>> some internal circuit logic that can be added to create a trigger
>>> out like this
>>
>> This is also available as an internal "hidden" feature since about 2005.
>> The RC4 port pin of the microcontroller (pin 6) outputs a short pulse
>> whenever the address changes. The signal is also available at the expansion
>> connector on pin 2. Pay attention that the signal is not buffered and not
>> protected against short or electrostatic charge (it's the "pure" RC4 port
>> signal). The microprocessor will be damaged if a voltage or GND is applied
>> to this pin. You have to add a suitable buffer to protect the processor. Do
>> not simply connect it to a socket !
>>
>> Best wishes
>> Dieter Doepfer
>>
>>
>>
>> ------------------------------------
>>
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>>
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