Personal sound to Light Unit
small but sophisticated
Materials
Gerber file
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Extra info / Update
Component list
R1,R2,R7-R10,R12,R14,R16 = 10kOhm
R3,R4,R6,R11= 100kOhm
R5 = 1kOhm
R13,R15,R17 = 390Ohm
Capacitors:
C1,C3 = 10µ F 16V radial
C2,C7,C9 = 100nF
C4 = 2µ F2 16V radial
C5,C10 = 22nF
C6 = 4µ F7 16V radial
C8 = 1µ F 16V radial
C11 = 10nF
C12 =4nF7
C13 = 22µ F 16V radial
Semiconductors:
D1,D2,D3,D5,D7 = 1N4148
D4 = LED, green (see text)
D6 = LED, yellow (see text)
D8 = LED, red (see text)
IC1 = LM385N (with socket)
T1-T4 = BC548C
Miscelllaneous:
BT1 = 9V PP3 (6F22) battery with clip-on lead
MIC1 = electret microphone
PCB, available from The PCBShop
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