ReverseEMF:
Yup...but then, the OP would run out of wires
How?
Only 7 buttons,
so 3rows by 3cols to cover 7 buttons
or 4rows by 2cols
or 2rows by 4cols
That is 6 wires.
We still haven't got a schematic from the OP yet?
Tom... 
ReverseEMF:
Yup...but then, the OP would run out of wires
How?
Only 7 buttons,
so 3rows by 3cols to cover 7 buttons
or 4rows by 2cols
or 2rows by 4cols
That is 6 wires.
We still haven't got a schematic from the OP yet?
Tom...