Twilight Switch
Materials
Gerber file
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Component list
R1 = LDR
R2 = S10K250 varistor
R3,R4 = 470Ohm
R5 = 10Ohm 1W
P1 = 100 k preset H
Capacitors:
C1 = 100nF
C2 = 100µF 16 V radial
C3 = 470nF 250VAC, class X2
C4 = 470µF 16V radial
Semiconductors:
D1,D3 = zener diode 12V 1W
D2,D4 = 1N4004
D5 = 1N4001
IC1 = 555C
Miscellaneous:
Re1 = 12-V-relay, e.g., Siemens V23057-A2-A101
K1,K2 = 2-way PCB terminal block, lead pitch 7.5 mm
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