This video explains how to use shift registers(74HC595) to control an insane amount of digital inputs.
Part 2:
   • Part 2 - How to Control a Ton of Inpu...  

Check these videos out first:
   • How Shift Registers Work!  
   • Video  

The code in the video: (note - I had the data and clock backwards in the video)
http://www.kevindarrah.com/download/a...

Check out my Tindie store (trigBoard is available) https://www.tindie.com/stores/kdcircu...

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  / kdarrah  

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