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By sprinkfitter
#71615 I am doing a project that would require more digital pins than my esp8266 12e has. I have used a mcp3008 and made more analog pins but now I need a couple more digital pins. Can someone point me in the direction how I go about doing this. I have a total of 8 relays I have to control. Thanks for the help

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By trackerj
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By lethe
#71636 Since you only need outputs, you can also use shift registers. Using 3 I/O you can get any number of outputs (8 per register & you can daisy chain as many as needed).
They are also dirt cheap and easy to use, just google for 74hc595 and you'll find plenty of examples.