what would be the simplest way of reading about 50+ gpio inputs?(momentary buttons)

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Just need the 1/0 (pushed or not) entry. It's for a bigger projects so its gonna have a few outputs as well(not as many though).

joan · Accepted Answer · 2015-01-18 23:41:00Z

1

Simplest would be to buy 4 MCP23017 I2C port expanders. Each one provides an additional 16 gpios and up to 8 may be connected to the Pi's I2C bus.

answered Jan 18, 2015 at 23:41

joan

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afshin ‌nakhjavani · Accepted Answer · 2015-01-19 10:16:26Z

0

you can use i2c bus expander.

answered Jan 19, 2015 at 10:16

1

The Adafruit article is several years out of date so be careful if you follow its advice. In particular I would suggest not using Occidentalis unless you have no other choice.
– joan
Commented Jan 19, 2015 at 10:21

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