Component List1 x 9V PP3 Battery
1 x 9V PP3 Battery clip 1 x Toggle switch 1 x PTM switch 1 x 100k Potentiometer 1 x 10uF Electrolytic Capacitor 1 x 8 pin DIL IC holder (for 555) 1 x 16 pin DIL IC holder (for 4017) 1 x 555 IC 1 x 4017B Decade Counter 1 x 10k resistor (pull down resistor) 1 x 330R resistor 6 x LEDs |
Useful Tips
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Frequently Asked Questions (FAQ's)
Q) What should I do if the solder spills onto the other copper tracks?
A) If it is a big blob of solder joining two tracks/pins, then use a solder sucker to remove the "blob". Then CAREFULLY use a craft knife to clean out any left over solder in the joints. Use the light box at front of room to check for overspill.
Q) Which leg is positive?
A) The longer leg is positive on both an LED and an electrolytic capacitor .
Q) Is my circuit correct?
A) Check it against the circuit diagram and ask a friend to double check!
A) If it is a big blob of solder joining two tracks/pins, then use a solder sucker to remove the "blob". Then CAREFULLY use a craft knife to clean out any left over solder in the joints. Use the light box at front of room to check for overspill.
Q) Which leg is positive?
A) The longer leg is positive on both an LED and an electrolytic capacitor .
Q) Is my circuit correct?
A) Check it against the circuit diagram and ask a friend to double check!