i'l like to have a 10x8 key pad matrix.. but the ones i found are usb based and cost like $226-$245 IE: sooo.. only thing i can think of now is to daisy chain (4) 5x4 keypad matrixes with (4) 74hc595's and which would be perfect.. however, all i find are these 4x4's.. which would take 5 but wou…

keypad matrix - daisy chain

Ruffsta November 7, 2017, 4:17pm 2

anybody have any alternatives or how i could do this 80 button matrix?

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