Generic Calculator Shield for Arduino Photo-journal
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03-24-2015, 07:50 PM
Post: #41
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RE: Generic Calculator Shield for Arduino Photo-journal
Nice trick mattiaspaul.
I've found another link. At first glance, it may support n-key rollover with only n diodes. And using open collector I/O when available will ease software design (no need to select input or output !) Regards. JCH |
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