Note: This is my first instuctable and i'm not a native english speaker - so please excuse my mistakes.
Step 1: Parts you need
- 1 CMOS 74C14 - its a small and really cheap microchip, we use it to create oscillators to make our LEDs blink
- some jumper wires
- a breadboard to stick the parts on it
- a 9V block battery with batteryclip
for further experiments a potentiometer around up to 1 M
for every LED-Circuit (you can add up to 6 to one chip) we need
- an LED ;-)
- a capacitor (around 4,7 µF, you may vary the value to get different blink frequencies)
- a resistor 100k-200k
- a resistor to limit the led current, around 1-3k
Step 2: Okay lets stick it together
Connect pin 7 of the chip with the ground (-) and pin 14 with the VCC (+)-bus on the breadboard.
Now connect the capacitor to pin 1 and the ground (attent to the direction, there is a minus printed on the Cap - that lead goes to the ground). Place a 100k-200k resistor between pin 1 and 2 of the chip. Then you need to add the series resistor (1-3k) between pin 2 and the LED. Attent to the right direction of the LED. The shorter leg goes to the ground.
I hope you may see it on the image.
If youre done, connect the batty to the plus and minus bus of the breadboard and your first LED should start blinking. :-)
Thats fun! Lets go forward, add more LEDs...