INTRODUCTION :
Thanks to the huge PC computing power, and thanks to the MY_ORGAN/GRAND ORGUE software, one can built today his own high quality, virtual Pipe Organ. using recorded real pipes sounds, (sound banks libraries).
I developped for this MIDI/USB Encoder Cards  able to drive any keyboard, ancient or recent and also real pipe organs. I built myself transportable keyboards. These boards are available for your old or new organ keyboards.
I have been building also a real Pipe Organ, with 1596 pipes, 5 keyboards, described here.

Virtual pipe organs I built with ancient keyboards :

KEYBOARD ENCODER USB
One keyboard Organ which can be extended to  2, 3, 4 or 5 keyboards or pedalboard. One module with  real pipes is also affordable.
Virtual Pipe Organ with  2 keyboards.
Nota : The case has been built by Franck bistocchi organbuilder. Electronic boards and software have been integrated by myself.
 My other keyboards
USB Keyboard Encoder : Can directly drive any ancient or modern Keyboards, such as FATAR matrixed keyboards.
See documentation here :