Material list

 
 
Hammond Box # 1590B (4.39" X 2.34" X 1.06")
Audio stéréo wire 1/8" X 12 pieds
Din pin male (4 fils)
Din pin femalle pour box (4 wires)
DB-9 connector female with a 6 feet cable
Male connector for box
Transformers (2) 42TM016 (Abra)
Connector to your radio ?

Resistors :
10k
2.2k
220
Pot 5k

Condensors :
0.47uF
0.01uF (3)

Diodes :
1N914 (2)

IC :
Optocoupleur 4N25
Socket machined for 4N25

The make the PCB :
Red pen
Persulfat d’ammonium
Copper clad
Acetone
Old rags
Wire wool no:0
Drill bits