I'm planning on building a remote start on my bug. I push a button on a
remote and it starts. I dont want to install those ready to install kits. I
want to build it myself. I have experience with electronic stuff since I has
a kid and built myself all the devices to home automate my house, and
control it with a pc/pocket pc (stuff that I plan to do in the bug too).
So, about the problems.
I've installed one of those keychain remotes to unlock/lock doors, and it
works fine. The remote has another button to open veicle trunck, and that is
the button i'm using to remote start it.
One of the problems I'm dealing is to know when the car is in gear, so that
it doesn't remote starts if that is true. If the car is in reverse, I can
detect it by the reverse light, but the other gears don't have a sensor. How
does the reverse gear sensor works? Is there a way to put a sensor on the
other gears? I would also like to have a digit panel to tell my witch gear
I'm in, so the gear sensor would work for that too. If extra gear sensor
installing is possible, is it possible without pulling the engine out? I
can't seem to find the reverse gear sensor, but that is probably because It
is out of reach in the transmission.
Other problems like, knowing when engine is running on it self so the
starter can stop, i've been able to overcome, but the gear sensor would
really help me. I would want to press the remote start button and the car
starts driving away impeled by the starter becouse it was stuck in gear....
Can someone help me?
A man after my own heart :-)
The Reverse switch is at the far front of the nosecone
on the tranny. Fitting another switch to detect other gears
would be near impossible.
I would choose to detect gears using the position of
the shift rod (in the tunnel). Open the tunnel access cover
plate under the rear seat and have a helper move the shifter
so you can see how it moves. The rotation of the rod is
only a very small angle so you'll need to watch closely.
Maybe attach small cams to trip limit switches or magnets
and reed switches, or LED's and tiny masks.......
I tought about that, but the diference of positions is very small, it woud
have to be very precise switch position, I'm gonna try it this way anyway
but since I predict problems I was hoping that something reverse sensor
would save my day... I'll post the results soon.
Thanks once again!
On 07/08/06 22:34, in article GtMti.1000$ firstname.lastname@example.org,
I was going to add that it might be smart to install
a second, redundant, limit switch to detect gears in
Neutral. This one would be wired directly into the
starter solenoid wire.
The extra switch direct-wired would eliminate a false
start due to some electronics failure.
BTW, the solenoid draws a *lot* of current. As much as
35 Amps for the initial inrush. You need a good-size relay
to handle that.
Is it realy necassary to see all gears?
The reason I ask is that it is (afaik) easier to install a switch onto the
gear coupling which alows you to to start only in neutral.
The switch is set to connect in neutral and when put in first and thirth
the coupling will go backwards and disconnect. If put in second and fourth
the coupling will go forward which also disconnect the circuit...
Asuming this is a manual tranny of course.
Neutral sensor is plan B. I wanted to sense all gears so that a digit panel
shows what gear i'm in. Just to raise the cool factor :) I'll try it anyway,
if it doesn't work: plan B.
On 07/08/07 16:10, in article 46b88b63$0$25492$ email@example.com,
An Idea then - if you want to sense all gears.
Take a computer joystick - they are really cheap ! all you need should
be inside :)
Locate it beneath the shif rod as speedy sujetsted (
Hi Speedy - (Tusses VZi))
Nice one on the Joystick. Hadn't thought of it.
How about this:
A round cutout from cardboard, perhaps 40mm diameter.
Big hole in the centre to fit round the shift rod.
(Slice the disc in order to slip it on the rod.)
Jubilee clip to fasten (or glue...)
Punch 3 tiny holes in disc, at differing radii.
LEDs shining thru disc to illuminate light sensitive diodes.
The diodes provide a digital output for each of the
3 rod angular positions.
One more piece of cardboard along the length of the rod
with 3 holes for "fore", Neutral, "aft" positions.
I installed a remote starter in my 74 Super. The transmission in this
bug, and every bug after 74, has a switch on the trans to set the
"fasten seat belt" light if you put the car in gear without your seat
belt on. So, when the bug is in neutral, the switch is closed (or
open, cant remember which). I used it to disable the remote starter if
the car was left in gear. It worked perfectly. I've since removed the
remote starter from the bug and put it in another car, but for the
time I had it in the car, it did the trick.
I realize this doesn't help you if your transmission doesn't have this
switch, but it might have others that might.
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