BUILDING HIS OWN PIPE ORGAN ?
Building computer-controlled Pipe Organs is very much easier than building trackers.
You don't need complex machanical parts, but only magnets which are directly linked to a
direct power interface. This power interface is linked to a PC.
Not so difficult!

For an electronic tracker control (stops and notes)
You need:

ITEM
SUPPLIER (fournisseur)
COMMENTS
AVERAGE PRICE
Pump (ventilateur)
Available by different Companies
Contact P. Leray
See picture
1500 € for a 10 stop pipe organ
Regulator yourself
See picture

Porte-vents
yourself
simple boxes which transmit air pressure to the bodies
can be done quite simply.or use plastic pipes
keyboards (claviers)
MIDI keyboards or organ builders
Can be purchased everywhere; authentic pipe organ keyboards are more expensive
150 € for a MIDI keyboard; 700 € for a mechanical or electrical pipe organ keyboard
bodies (sommiers)
yourself
Electrical bodies are quite simple: just a box with holes, and magnets to  be  put  under  the table
See pictures
Sommier détail de construction

Pipes
ancient pipes, or yourself for wood pipes
Type de Tuyaux
Coupe d'un tuyau en bois
Dimensions available contact me
Jeux de fonds
Anches
Magnets
Available: contact: pascalleray.ftrd@free.fr
See theoretical picture
See magnet examples
Very various prices!
ELECTRONIC CONTROL
contact: pascalleray.ftrd@free.fr See pictures
From 3000 € for a 5 stops organ, up to 10000 € for a large one (100 stops and more)

You have after to build a nice case!
Price depends on your technical skill.