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SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).

Member #151732

Member Since: September 18, 2010

Country: United States

  • I need to use 3 of these devices, 1 for a 4x3 keypad and 2 others for 14 buttons. I understand the addressing of the chips but in the arduino example I dont see where I access the 0x5a to change it to 0x5b, etc. also now I have 3 interrupts to handle and of course I’m using a 328p which I believe only has 2 interrupt pins? any ideas on that? I was thinking about putting the 2 into an OR gate and just reading both chips when the irq is triggered. thanks.

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