On Mon, 13 Jun 2005, John Foust wrote:
Zemco Compucruise! I put one in my 1996 Mustang
Grande circa 1980.
It was so futuristic. After the Mustang I got a Javelin.
And today it's a futuristic artifact of the past, and will be
right at home in my new 35-yr-old car.
(I've avoided automotive computing intentionally and 100%, but it
looks like I'm going to do MP3 audio (with a Soekris Eng. NET4801)
and also Megasquirt, an open-souce EFI system.)
I kept it long after the car passed on and eventually
gave the
Compucruise and its sensors in 1996 to Dale Luck of Amiga
graphics fame for one of his restorations.
It was an early car computer kit. I remember epoxy-ing magnets to
the drive shaft to monitor speed, a pair of temperature sensors,
an inline optical gas consumption sensor, a brake switch, and a
vacuum-driven bladder connected to the throttle. It could do cool
stuff like real-time MPG, estimated time of arrival, and a cruise
control that would accelerate to a preset speed on its own.
I lucked out a few years back, and found a new-never-used still in
the box one, complete with brackets, cable ties, manuals and
errata, etc. Missing only the box top.
It's Z80-based, I think and has a masked ROM, and powered up OK
about a year or so back. I hope to begin installing it this
weekend. I doubt I'll get many sensors setup this weekend.
The Compucruise's cruise control once lost its
feedback (and/or
brake shut-off, I forget) while driving the interstate and it
happily floored the gas pedal until I reached under the dash to
disconnect its power. My passenger was horrified.
Woah. Not very good! Cruise control isn't high on my list, but
I'll keep that in mind! The brake-switch interlock system is a bit
kludgey, a ball-chain and plastic switch. I suppose I should
reengineer that part.
I'll keep the fuse/connector handy too :-)