The traces in this design are nice and fat for easy toner transfer (or lazy photo boards). I started making PCB with the TT method, but found it pretty tedious. A $10 investment got me started with photo PCBs (using ink jet transparency positives). I will never go back. 

All the parts were available at my local electronics shop in Amsterdam, though I ordered the parts from Mouser in bulk. Each board cost about $2.50 to make - the greatest expense was the 9 pin female DB9 connector ($1.60). 

Layout and BOM are below. Schematic and board files are for EagleCad. Don't forget the 8 jumpers, shown in red. 

Part Value 

C1 100uF/25V 
C2 22u/16V Tantal 
C3 22...47...100pf 
C4 22...47...100pf 
D1 1N4148 
D2 5V1 Zener 
D3 1N4148 
D4 1N4148 
D5 1N4148 
D6 8V2 Zener 
D7 1N4148 
IC1 DIL18S 
IC2 DIL28-3 
IC3 DIL40 
Q1 BC547B 
Q2 BC547B 
R1 10k 
R2 1k5 
R3 100ohm 
R4 1K 
R5 15K 
SV3 Pin Header (3) 
X1 Female DB9 9-pin connector (F09H)