I have a 1" wooden ball (makes this on topic) hanging from a small
screw eye in the ceiling. When it bumps the center of the windshield
it is time to stop. Also tells my wife if she is too close to my side
where my truck lives. Actually I have two wooden balls....
I had a variation of this in a previous, shallow garage that keeps the
ball out of the way but it kind of depends on ceiling height.
I put the screw eyes in the ceiling to line up with the windshield.
But instead of permanently fastening the string. I ran the cord from
the ball to the ceiling and over to the end of the garage door and
installed another screw eye there, where I tied the other end of the
cord. I used a tennis ball and when the garage door goes up the ball
comes down to windshield height. Door goes up and the ball retracts
toward the ceiling. Kinda fiddly getting it set up but it works well.
I like the way the wooden ones give an audible click as well as the
But either type of ball would work. If you have kids around you have
to watch that they don't make a game of whacking them around.
lasr pen in the ceiling and a small dot on your windsheild. Laser pen
comes on with the garage door opener light. 100% accurate and not
affected by breeze blowing the ball around or humidity/temperature
affecting the length of the string.
On Sat, 30 Jun 2012 10:50:57 -0400, firstname.lastname@example.org wrote:
I like it! Did you do this or just think it up? Didja use a relay
and solenoid to kickstart the pen?
BTW, what in the hell are you guys parking in your shop for?
If you're trying to take a roomful of people by
surprise, it's a lot easier to hit your targets
if you don't yell going through the door.
-- Lois McMaster Bujold
The unit I have is commercially made. If anyone's interested, I'll dig
up the box and provide complete details. Bought it from one of those
bargain outfits on the internet but pretty sure they are still available
if you look.
Mine has a small power cube you plug in which powers a "control unit"
which you stick on your opener with double faced tape. The little laser
"pens" mounted on swivel sockets for aiming plug into it.
Set up is a no brainer. Mount the units, pull your car into the garage
exactly where you'd like to land every time. Smack the opener to
activate the laser and aim it into the interior of the dashboard or
When you open the door the laser illuminates for about 30-45 seconds,
you pull in and wait until the bright red dot hits the screw (or
whatever) on the defroster grill in front of the driver's position.
I don't believe I paid $20 for the setup which covers both sides of the
garage. I've had mine about 4 years now and only re-aimed when I got a
On Sat, 30 Jun 2012 17:16:40 -0500, Unquestionably Confused
One of these came with the opener I bought a few years (and a couple of
houses) back. It was a Sears opener but I didn't see them when I bought my
latest opener (for the new house). As you say, they work like a champ.
You can buy the things ready made, and for DIY you can take the laser
pen apart, bypass the switch, connect wires in place of the batteries
to a small 3.5 V "wall wart" transformer and with an E26 cube-tap
(threaded to blade adapter) plug the wall-wart into the one side of
the garage door opener light. Make a little bracket to fasten to the
garage ceiling and bend it to point the laser where you want it. Keep
the bracket as short as possible so it doesn't move.
You don't think that's a little overkill having a laser pointer????
Do you really need another electronic for this. You could easily put a
stop block (little lip) to help on the floor.
The breeze should not affect the ball that much unless you have a real
problem... I use the tennis ball for my wife's vehicle and it doesn't
blow around, while everything else blows into the garage...
If you are worried about the ball being in the way, take a screw eye and
polish the eyelet. Then attach the ball to the string and attach the
string to the garage door. When the door is up, it's in position, when
down it's out of the way.
On 6/30/2012 10:50 AM, email@example.com wrote:
On Sat, 30 Jun 2012 11:06:30 -0400, tiredofspam <nospam.nospam.com>
For "precision"parking - both left to right AND fore and aft, you
cannot beet the lazer. If you line it up to the center of the car you
can tell if you are on-center when the laser hits the leading edge of
the hood (center ridge if the hood has one)
And it is DEAD SIMPLE.
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