[sdiy] A Sys Modification - RS-280 Divider

[Christopher Mullin]

Syntronics,

  very clear,  thanks.

Stuadh

Download art, music and stories at http://www.stuadh.com/





>From: "HL-SDK Synths" <syntroniks at gmail.com>
>To: "Christopher Mullin" <stuadh at hotmail.com>
>Subject: Re: [sdiy] A Sys Modification - RS-280 Divider
>Date: Sun, 28 Jan 2007 22:57:11 -0500
>
>Yes, this is what I had hoped.
>
>Pin number 2 (The one to the right of the dot in corner) is the reset pin.
>When you normally use it, it is connected to ground, or connected to ground
>through a pull-down resistor. Either way, you will probably have to cut a
>PCB track.
>
>If it is connected through a resistor to ground, then scrape the track as 
>it
>comes off pin 2, You want to gake off a portion of the green soldermask on
>top of it without damaging the copper underneath. You then solder a wire to
>that, and apply the reset pulse to that! (make sure every signal has a
>ground)
>
>Otherwise, the track goes from pin 2 to ground. In that case, you have to
>cut a hole in the copper track. Then solder a wire on to pin 2. Also solder
>a resistor 1K to about 100K from pin 2 to ground.
>
>http://www.seattlerobotics.org/encoder/mar97/basics.html  <--that is what
>you are basically doing, this would be a pull down resistor, just because
>that is how it works.
>
>If you need more explanation, I'd be glad to help (I just happen to have
>plenty of these chips from ST as well :-D)
>
>
>On 1/28/07, Christopher Mullin <stuadh at hotmail.com> wrote:
>>
>>Hi,
>>
>>   it works with both clock and audio signals, ouputting a square wave.  I
>>don't have a schematic but it uses a HCF4024BE (made by ST).  The module
>>may
>>be found at http://www.analoguesystems.co.uk/pdf/RS280.pdf.  The IC
>>datasheet is at
>>
>>http://www.datasheetarchive.com/pdf/hcf4024be-datasheet/hcf4024be-datasheet.html
>>
>>Many thanks,
>>
>>Stuadh
>>
>>Download art, music and stories at http://www.stuadh.com/
>>
>> >From: "HL-SDK Synths" <syntroniks at gmail.com>
>> >To: "Christopher Mullin" <stuadh at hotmail.com>
>> >Subject: Re: [sdiy] A Sys Modification - RS-280 Divider
>> >Date: Sun, 28 Jan 2007 18:36:39 -0500
>> >
>> >Do you have a schematic of the circuit, or the IC used in it. Also, is
>>this
>> >a clock divider, or a frequency divider?
>> >
>> >On 1/28/07, Christopher Mullin <stuadh at hotmail.com> wrote:
>> >>
>> >>
>> >>Hi,
>> >>
>> >>   I'd like to add a reset input to my Analogue Systems Divider.  Can
>> >>anyone
>> >>explain how to do it (in simple terms)?
>> >>
>> >>Yours Aye
>> >>
>> >>Stuadh
>> >>
>> >>Download art, music and stories at http://www.stuadh.com/
>> >>
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