Go Down  Topic: 33 bit shift register! (Read 3727 times)
previous topic - next topic   Of all the strange things, in this
device I'm trying to hack, it's got a 33bit shift register, why
they couldn't have simply stopped at 32bit, I don't know..
Anyways, the device.. It's the overhead console from my 2002
Chrysler PT Cruiser. It normally displays the compass direction,
and the outside temperature. I'd really like it to display the
time as well, and once I have it nailed down, I can have it do
all sorts of things, maybe even show the gas mileage. The chip
inside the thing is an OKI m5267c-17, most of it's pins go
directly to the VFD display, 4 of them lead to what must be the
microcontroller. I plan to interrupt the connection to the
microcontroller and route them to the Arduino. I have found the
datasheet on this OKI chip, it is a shift register, and it's
33bit, 33 outputs. Since it's not divisible by 8, I imagine I
can't use the shiftOut function? Or maybe I send it 40 bits, and
just don't use the first 7 I s