How to Add Multiple Inputs to an Arduino using a Shift Register -- The Learning Circuit 78

How to Add Multiple Inputs to an Arduino using a Shift Register

The Learning Circuit | element14 presents | Project Videos

In this fourth and final video about shift registers, Karen shows how to use them to add inputs to an Arduino. Using one or more parallel-in serial-out shift registers, 8, 16, or more inputs can be added by using only 3 Arduino I/O pins.

Previous Episodes:

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
Arduino Uno, ATmega328P MCU, 14 3.3V I/O, 6 Analogue Inputs, 6 PWM Outputs	Arduino	1	Buy NowBuy Now
Breadboard, MCM 60 rows, ABS, 8.5mm, 165mm x 56mm	Multicomp	2	Buy NowBuy Now
SN74HC166NSN74HC166N - Shift Register, 74HC166, Parallel to Serial, Serial to Serial, 1 Element, 8 bit, DIP, 16 Pins	TEXAS INSTRUMENTS	2	Buy NowBuy Now
Through Hole Resistor, 10 kohm, 250 mW, ± 1%	TE Connectivity	17	Buy NowBuy Now
Tactile Switch, 12mm, Yellow, Top Actuated, Through Hole, Round Button, 24 VDC, 50mA	Omron	4	Buy NowBuy Now
Tactile Switch, 12mm, Red, 12 VDC, 50mA	Multicomp	4	Buy NowBuy Now
Tactile Switch, 12mm, Blue, Top Actuated, Through Hole, Round Button, 24 VDC, 50mA	Omron	4	Buy NowBuy Now
Tactile Switch, 12mm, White, Top Actuated, Through Hole, Round Button, 24 VDC, 50mA	Omron	4	Buy NowBuy Now
140 Pc. Jumper Wire Kit, 22 AWG, Solid, Assorted Lengths and Colors	Twin Industries	1	Buy NowBuy Now
Wire Kit, Jumper, Male to Male, Solderless, 100 mm - 250 mm, 75 Piece	MCM	2	Buy NowBuy Now
USB Cable, USB Type A Plug, USB Type B Plug, 915 mm, 36.1 ", USB 2.0, Black	MULTICOMP	1	Buy NowBuy Now

Additional Parts:

Product Name
Computer with Arduino IDE

Attachments:

TLC_78 Resources.zip

Top Comments

makerkaren over 5 years ago in reply to bemmett +1

Thanks. They must have accidentally put the BOM for one of the other shift register episodes. I'll see about getting that corrected.

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bemmett over 5 years ago

The BOM lists a serial to parallel shift register while the video highlights how to use a parallel to serial shift register. The part listed won't work for adding inputs to an Arduino.
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makerkaren over 5 years ago in reply to bemmett

Thanks. They must have accidentally put the BOM for one of the other shift register episodes. I'll see about getting that corrected.
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makerkaren over 5 years ago in reply to bemmett

Thanks. They must have accidentally put the BOM for one of the other shift register episodes. I'll see about getting that corrected.
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