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rpi.gpio refers to the package name of a Python module for accessing the Raspberry Pi's GPIO pins. NOTE not supported on Pi5. The module allows GPIO pins to be initialised, turned on, and turned off. It uses a functional programming style.

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what is the maximum number of GPIO pins i can expand with rpi 3 and how?

I need more than 250 individual pins for my project.(can't use multiplexing). so how can i get them? is there any good efficient and low cost modules for that. can MCP27017 do this?
sirivella madhu's user avatar