
Schematic
R1
1M
R2
220K
R3
220K
R4
1M
R5
220K
R6
220K
R7
220K
R8
220K
R9
2K2
R10
1K
R11
1K
R12
470R
R13
1K
R14
1K
R15
100K
R16
100K
R17
100R
R18
2K2 (CLR)
C1
47u elec
C2
47u elec
C3
10u elec
C4
330p
C5
1u
C6
1u
C7
10n
C8
100u elec
D1
1N4001
D2
LED (rate)
IC1
4558
IC2
TL072
VACT_1A
5MM RED LED
VACT_1B
LDR*
SPEED
100KB
DEPTH
1KB
GAIN
10KB**
WAVE
500KB
*Tayda’s standard LDR works
fine (20M dark - 1K light)
**Can be internal trimmer.