[sdiy] RE: [sdiy] EFM Seq-2A

[Dave Magnuson]

Here's the details of the short:

There is a jumper (wire link) you need to install on the top of the board 
between Pin 12 of U5 to ground.   At the end of the jumper furthest from the 
IC (at the ground bus) the pad is too large... so the ground bus is 
connected to the adjacent trace on the circuit board.

You need to seperate the pad from the neighboring trace, but leave it 
conencted to the ground bus

Dave


----- Original Message ----- 
From: "rdrake" <rdrake at data2action.com>
To: <resfreq at hoohahrecords.com>; <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, February 08, 2006 10:43 AM
Subject: [sdiy] RE: [sdiy] EFM Seq-2A


> there's a FPD file for an MOTM front panel for this thing, i think its up 
> on the yahoo modularpanel group website?  might give you some ideas.  if 
> you can't find it let me know and i'll backchannel a copy.
>
> i started mine, but haven't finished it.  i saw a reference that there is 
> a short on the board that needs to be corrected, but never found details. 
> if anyone has built this and knows what bugfixes are needed, would be 
> appreciated.
>
> bbob
>
>>----- ------- Original Message ------- -----
>>From: "Dave Magnuson" <resfreq at hoohahrecords.com>
>>To: "Synth-DiY" <synth-diy at dropmix.xs4all.nl>
>>Sent: Wed, 8 Feb 2006 10:24:38
>>
>>Hi List,
>>
>>I've had a pair of EFM Seq-2A boards sitting in my
>>"to-do" pile for a LONG
>>time.   I was wondering if anyone on the list has
>>built one of these.
>>
>>I'm trying to decide on a faceplate layout, but
>>haven't decided if I want to
>>keep Tom's combination of slide and glide.   If
>>anyone can comment on how
>>well this arrangement works (is it useful, or not),
>>I'd love your opinions.
>>
>>I'm trying to figure out what happens exactly when
>>slide is activated while
>>using glide...  It looks like when the slide switch
>>is "off" than the slide
>>output (labelled trigger on the schematic) is
>>essentially a second gate
>>output with adjustable pulse length, but there is
>>no change on the CV out.
>>
>>It also looks like glide is global (effecting all
>>steps), while slide is
>>selected per-step.    So my question is this:
>>what happens when glide is
>>activated globally, *and* slide is activated on
>>some steps? I'm guessing
>>that the "slope" of the glide is selected by the
>>glide pot, but the glide is
>>cut short by the length determined by the slide
>>pot. Is this correct?
>>
>>Thanks in advance!
>>
>>Dave Magnuson