Yamaha DTXpress/DTXplorer/DTXtreme

Hi all,

I have finally got round to making a PCB for the "DTXpander".  For
those who don't know what it is, it allows you to interface two piezos
to a module which really wants one piezo plus a rim switch.  I
originally made it to make use of the unused dual inputs on the
DTXpress to increase the number of pads, but it seems it is also
useful for DIY edrums where it is more common to use two piezos rather
than a piezo and FSR.  Also, to interface some of the Pintech drums to
the DTXpress requires such a signal conversion.

I have already posted the circuit so people can make their own
interface, but I know some people have had problems which generally
seem to be because not everyone is used to building electronic
circuits.  If someone wants one building, I will make one for them for
£25 including VAT & delivery.  I would not expect that to be an
economical price for the USA, but unless there is the demand I won't
be getting them made in China by the thousand :-(  If anyone in the UK
(or Europe) wants one then email me.  I have had 8 bare PCBs made, one
of which I will use for myself.  The circuit is exactly the same as
the one I posted.  There is a hole in the case lid so you can adjust
the potentiometer, and a jumper inside to bypass one of the diodes.

Sorry if this appears to be blatant advertising, but I am not going to
be making any money from this - just covering the costs of parts for
the unit, and hopefully the cost of the parts I have bought
experimenting with the various versions over the last 18 months.

Keith.

--- In DTXpress@yahoogroups.com, "Keith" <keith1200rs@...> wrote:
>
> Hi all,
> 
> I have finally got round to making a PCB for the "DTXpander".  For
> those who don't know what it is, it allows you to interface two 
piezos
> to a module which really wants one piezo plus a rim switch.  I
> originally made it to make use of the unused dual inputs on the
> DTXpress to increase the number of pads, but it seems it is also
> useful for DIY edrums where it is more common to use two piezos 
rather
> than a piezo and FSR.  Also, to interface some of the Pintech 
drums to
> the DTXpress requires such a signal conversion.
> 
> I have already posted the circuit so people can make their own
> interface, but I know some people have had problems which generally
> seem to be because not everyone is used to building electronic
> circuits.  If someone wants one building, I will make one for them 
for
> £25 including VAT & delivery.  I would not expect that to be an
> economical price for the USA, but unless there is the demand I 
won't
> be getting them made in China by the thousand :-(  If anyone in 
the UK
> (or Europe) wants one then email me.  I have had 8 bare PCBs made, 
one
> of which I will use for myself.  The circuit is exactly the same as
> the one I posted.  There is a hole in the case lid so you can 
adjust
> the potentiometer, and a jumper inside to bypass one of the diodes.
> 
> Sorry if this appears to be blatant advertising, but I am not 
going to
> be making any money from this - just covering the costs of parts 
for
> the unit, and hopefully the cost of the parts I have bought
> experimenting with the various versions over the last 18 months.
> 
> Keith.
>
Hi,

re: this posting can I email you.I have tried but it appears your 
email is not working !!

> Hi,
> 
> re: this posting can I email you.I have tried but it appears your 
> email is not working !!
>

Hmmm, I thought I fixed that.  Try keith at kdel dot co dot uk

Keith.

--- In DTXpress@yahoogroups.com, "ostin67" <phil@...> wrote:
>
> --- In DTXpress@yahoogroups.com, "Keith" <keith1200rs@> wrote:
> >
> > Hi all,
> > 
> > I have finally got round to making a PCB for the "DTXpander".  
For
> > those who don't know what it is, it allows you to interface two 
> piezos
> > to a module which really wants one piezo plus a rim switch.  I
> > originally made it to make use of the unused dual inputs on the
> > DTXpress to increase the number of pads, but it seems it is also
> > useful for DIY edrums where it is more common to use two piezos 
> rather
> > than a piezo and FSR.  Also, to interface some of the Pintech 
> drums to
> > the DTXpress requires such a signal conversion.
> > 
> > I have already posted the circuit so people can make their own
> > interface, but I know some people have had problems which 
generally
> > seem to be because not everyone is used to building electronic
> > circuits.  If someone wants one building, I will make one for 
them 
> for
> > £25 including VAT & delivery.  I would not expect that to be an
> > economical price for the USA, but unless there is the demand I 
> won't
> > be getting them made in China by the thousand :-(  If anyone in 
> the UK
> > (or Europe) wants one then email me.  I have had 8 bare PCBs 
made, 
> one
> > of which I will use for myself.  The circuit is exactly the same 
as
> > the one I posted.  There is a hole in the case lid so you can 
> adjust
> > the potentiometer, and a jumper inside to bypass one of the 
diodes.
> > 
> > Sorry if this appears to be blatant advertising, but I am not 
> going to
> > be making any money from this - just covering the costs of parts 
> for
> > the unit, and hopefully the cost of the parts I have bought
> > experimenting with the various versions over the last 18 months.
> > 
> > Keith.
> >
> Hi,
> 
> re: this posting can I email you.I have tried but it appears your 
> email is not working !!
>
Thanks I will try now to email you with query !