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RS VAPP
 
 CdS LDR Volume Control

100% Radio Shack
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Buy the PC Board & Etchant first, if you can't make the board you don't need the parts!
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Update 08.15.08 Value Each  RS Part # Price Packs   Quantity per Pack
Capacitors All of the Components can be Purchased at Radio Shack
C4, C5 .22 uf 2 272-1070 1.49 1 2.98 Pack-of- 2 metal film
C2, C7 1 uf 2 272-1055 1.59 2 1.59 1 uf  Film Capacitors
C3 100 uf 1 272-1028 1.29 1 1.59 - Electrolytic
C1 10 uf 1 272-1025 1.19 1 1.59 - Electrolytic
Resistors
R1, R2, R3, R4
R6, R8, R9
100K 7 271-1347 .99 2 1.98 Packs of 5   1/4 watt
R7 1 Meg  1 271-1356 .99 1 .99 Packs of 5   1/4 watt
LDR 1 - CdS sensor 2.2k - 2.2 Meg 1 * * *     Removed from a Night-light
Potentiometers
Pot 3 10K 1 271-282 1.49 1 1.49 Board Mounted
Pot 1, Pot 2 5K 2 271-1714 2.99 2 5.98 Panel Mounted
Semi-Conductors
D1 1N4001 1 276-1101 .99 2 1.98 Power Supply Diode
U2 TLO82 1 276-1715 1.99 1 1.99  8 pin dip, single supply OP Amp
LED-1  3000 MCD 1 276-307 1.99 1 1.99 Power on LED
Misc.
Project Enclosure 6x3x2" 1 270-1805 3.79 1 3.79 Circuit board is designed for this box.
IC Sockets 8 Pin 1 276-1995 0.69 1 0.69 Pack-of- 2 <= Use Sockets - Please! 
PC Board Terminals 2-Position 4 276-1388 2.49 1 2.49 Pack of 4  -  Optional
Stereo Jack 1/8"   2 274-249 2.99 1 2.99 Pack of 2 - Adapted to board
Mono Jack 1/4"   1 274-280 2.99 1 2.99 This is for the Line Out to Amp
Mute Switch SPST  <=find at RS 1         Optional or use a jumper wire.
Power Switch SPST  <=find at RS 1         This could turn on both the RS Illusion & VAPP board using a stereo cord.
Connecting wire             Use what you have available
Battery Holder Holder - 4 AA Batteries 1 270-409 1.99 1 1.99 Switch in Battery Holder
V1 6 V 4 xxx   1 Pack 4 AA Batteries or use 6 volt lantern battery

Etch Your Own
Circuit Board

See Note =>   276-1499 4.49 1 4.49 Note: A One Sided epoxy board from
another store would be better
Board Etchant     276-1535 9.99 1 9.99 PCB Etchant 16 oz. bottle
De-Soldering Braid     64-2090 $3.99 1 3.99 <= This is a Must Have!
Prices as 08/15/08         $58 Total  usd
Maplin Electronics   is a good substitute store in the UK, maybe build the RS Theremin for half the cost?