Homebrew PCBs

>> JanK wrote: 
>> <snip>
>> * A digital pulse stream, about 3 times per
>> second (which is the update rate of the
>> display). Bit times are about 30 us.  The
>> "message" length is about 800 us.
>> <snip>

> Bob wrote:
> 
> Neither the 30 uS nor the 5 uS time
> corresponds to a 'normal' serial baud
> rate.

There is no "baud rate" it is SPI

(lets play master and servant)

> <snip>
> Is the 5 uS bit stream a toggling clock
> that runs throughout the 800 uS period?
> If so, that sounds to me like it's a clock
> for the display data being sent in the 30
> uS stream.

Yep - SCLK for an SPI port.

Each rising (or falling) edge of that clock you
have a new bit of data.  It can run at any speed
it likes then.

see above post for a full explination some
bloke called Scott S. has done.