Nocturnal Animals Whisker
Parts: R1____________100K 1/4W Resistor
R2______________2M2 1/4W Resistor
R3_____________10K 1/4W Resistor (see Notes)
R4______________4K7 1/4W Resistor
R5____________Photo resistor (any type, see Notes)
C1,C2,C3_______47µF 25V Electrolytic Capacitors
D1___________1N4148 75V 150mA Diode
IC1____________7555 or TS555CN CMos Timer IC
Q1____________BD681 100V 4A NPN Darlington Transistor
LP1____________6V 3W Lamp (see Notes)
SW1____________SPST Switch
B1_____________6V 1.2A Lead acid sealed rechargeable Battery (see Notes)