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  • You'd have to use a separate divider for each input (although you can get chips which are resistor arrays). However I guess most Arduino shields don't use the analogs so you could just not connect them - all the rest should work fine with 5V.

    For NRF24, it's just that the module itself is tiny (and cheap!). Most people end up doing something like this:­2/getting-started-rf24/ so if there's free space on the board then it makes sense to use it :)


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