Sixty Four Pixels Arpie, User Manual

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Hack Header
Arpie has an expansion port called the “hack header”, which is a 6 -pin connector on
the lower board, next to the dual row connector that connects the top and bottom
boards.
Arpie can use this this header in several different modes that are designed to
support specific pieces of external hardware connected to it. Each of these extra
modules
(called “tabs”) is described in detail in the following sections.
With the exception of the Control Tab (which sits outside the Arpie case) each tab
fits between the top and bottom boards of the Arpie. The six connector pins fit into
the hack header and the tab is held firmly in place by passing through it the two rows
of connection pins from the top board. Here is how the CV tab fits in the case.
Some important notes
•
Switch off the Arpie power and remove the programmer (if attached) when
fitting or removing a tab
•
When fitting the tab, make sure that the underneath of the tab board is not
touching the programming header pins (if a pin header is soldered there). A
pin header could be trimmed slightly or bent slightly outwards if touching the
tab board.
•
Only one tab can be connected and used at a time!
•
Select the new hack header mode after attaching the tab (see next page) and
set the mode back to none before removing a tab.