Arduino with Shift Register

Use a Shift Register (the exact model: 74hc595) with Arduino. The code includes helpful functions to simply interact with a shift register.

Seting Up

• Connect the clock pin (Digital Pin 11 on the Arduino) to the 3rd pin on the bottom of the shift register.
• Connect the data pin (Digital Pin 12 on the Arduino) to the 6th pin on the bottom of the shift register.
• Connect the latch pin (Digital Pin 10 on the Arduino) to the 4th pin on the bottom of the shift register.
• Connect the 5V pin of the Arduino to the 2nd pin on the bottom of the shift register.
• Connect one of the ground (GND) pins of the Arduino to the 5th pin on the bottom of the shift register.
• Connect another 5V that comes from the Arduino to the last pin on the bottom of the shift register (8th).
• Connect one of the ground (GND) pins of the Arduino to the first pin on the top of the shift register.
• The shift registers outputs are (7th bottom pin, 2-8 pin on the top).

NOTE: This exact layout may only apply to the 74HC595 shift register.

The code also includes the shiftWrite(int,int), setBin(byte), refreshShift().

Functions

refreshShift()

Refreshes the shift register with the updated bytes (byte bin variable).

setBin(byte)

Set a new binary value from 0b00000000 to 0b10000000 (inclusive).

shiftWrite(int,int)

Param 1: Pin on the shift register (0-7). Layout of shift register pins:

• Pin 0: Pin 7 on the bottom of the shift register.
• Pin 1: Pin 2 on the top of the shift register.
• Pin 2: Pin 3 on the top of the shift register.
• Pin 3: Pin 4 on the top of the shift register.
• Pin 4: Pin 5 on the top of the shift register.
• Pin 5: Pin 6 on the top of the shift register.
• Pin 6: Pin 7 on the top of the shift register.
• Pin 7: Pin 8 on the top of the shift register.

Param 2: Value of that pin (0 or 1)

• 0 = LOW
• 1 = HIGH