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Topic: More pins in Arduino (Read 1 time) previous topic - next topic


I would like to connect two Arduino boards, so I can control a ISD2500 addressing from an arduino board and .  I need to have input for some sensors as well. Any sugestion? :



it is big and clunky, but the 74154 TTL address decoder will take four pins and decode them into 16 pins: you send it a 4-bit binary address, and the appropriate pins are set. I think there is a CMOS version-- the 4515?

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