Kevin Darrah | How to Control a Ton of Inputs using Shift Registers! @Kevindarrah | Uploaded April 2013 | Updated October 2024, 1 day ago.
This video explains how to use shift registers(74HC595) to control an insane amount of digital inputs.
Part 2:
youtube.com/watch?v=1Vb2BpxPnjU&feature=youtu.be

Check these videos out first:
youtube.com/watch?v=6fVbJbNPrEU
youtube.com/watch?v=R7xI-flj1Mw

The code in the video: (note - I had the data and clock backwards in the video)
kevindarrah.com/download/arduino_code/ShiftRegisterInput.ino

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