16 Ways to Switch your AC Power On
Connect this microcontroller controlled switch between an ordinary AC Power On/Off switch and the load, and you have 24 (say, sixteen) ways available for managing how and when the load actually gets powered.
Materials
Gerber file
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Component list
R1 = 1.5kOhm 1W (115VAC: 750Ohm)
R2,R3 = 1MOhm (115VAC: 470kOhm)
R4,R5,R6 = 330Ohm
Capacitors
C1 = 0.33µF 250VAC, MKP (115VAC: 0.68µF) (see text)
C2 = 1000µF 63V radial
C3 = 100nF
C4 = 10nF class X1/Y2
Semiconductors
D1 = 4.3V 0.5W zener diode
D2 = BAT85
IC1 = ATtiny13-20PU, programmed, Elektor # 100443-41
TRI1 = BT136
Miscellaneous
K1,K2 = 2-way PCB screw terminal, pitch 7.5mm
SW1 = 4-way DIP switch block
PCB # 100443-1
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