Difference: RaspiElfKeypad (8 vs. 9)

Revision 92018-05-20 - PeterSchmid

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< image="/twiki/pub/Cosmac/RaspiElf/raspi-elfmemcard-s.jpg"

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Intro

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< The Elf Membership Card has 8 data switches, 3 mode switches, and a IN push button on its front panel. The data is displayed on 8 LEDs (binary). It is a error prone but educational task to "switch in" in (load) the program.

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> The Elf Membership Card has 8 data switches, 3 mode switches, and a IN push button on its front panel. The data is displayed on 8 LEDs (binary). It is a error prone but educational task to "switch in" (load) the program.

I have got an old external keypad because my old notebook did not have any numeric keypad. The keys looks similar to those old Elf hex keypads, why not use this spare keypad for the Elf Membership Card? It is a Cherry keyboard and I have an other Cherry keyboard with the same type of key caps and it was easy to replace the two upper rows with the A to F caps.

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> See also the RaspiElfDisplay (TIL311 like LED display).

Contents

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How to get and build the RaspiElf Keypad/Display Software

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< The elfdisplay is part of the tools package. See RaspiElf#How_to_get_and_build_the_RaspiEl

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> The elfdisplay is part of the RaspiElf tools package. See RaspiElf#How_to_get_and_build_the_RaspiEl

Sample session

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> TBC (video)

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