Ardruino shift registers (74HC595)

This guide shows how to get outputs with 74HC595 and a Ardruino pro mini - Here only used as output !!

starting with 1 shift register, then 2.. Later you can daisy-chain the shiftregisters to get unlimmit number of outputs !
Depending on the speed you what to change the outputs with.

The shiftregister is

PCS	Item	Calculated Price	Price bulk buy
2	74HC595	0.33	E-bay US $ 1.66 with shipping to Denmark (July sep)
2	8 Bit led testers	1.48	US $ 5.9 @ 8 pcs, or 8 leds and resistors
1	0,1µF	0.02	US $ 2.50 @ 100 pcs - May not be nesseray - only if you have some flicker.

Recommended standard reusable hardware

PCS	Item	Calculated Price	Price bulk buy
1	Arduino Pro Mini clone	3.71	E-bay US $ 3.71 @ 1 PCS with shipping to Denmark (Aug 2013)
1	Wire Jumper Cable	7.49	US $ 7.49 with shipping to Denmark (July 2013)
3	BREADBOARD SYB-120 700 TIE-POINTS	5.67	E-bay US $ 5.67 (@1 pcs US $ 1.89) with shipping to Denmark (July 2013)

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Datasheet 8-Bit Shift register (74hc595)

Connect the circut, as shown.

Now with 2 shift registers

Now with 3 shift registers

And you can carry on expanding the numbers

Some sample codes

For futher info please read

NOTE:
// const int ShiftPWM_dataPin = 11; // Orange
// const int ShiftPWM_clockPin = 13; // Green
// const int ShiftPWM_latchPin=8; // Brown
// MISO pin(do NOT use!) = 12; // Do not use the MISO pin for anything, because this interferes with SPI operation!