Hmmm, it would be interesting to get one of those cheap sets and
experiment.  I imagine they cast a fairly wide beam and sense large objects
moving relatively slowly and not too far away pretty well.

On Sun, Jun 4, 2017 at 1:53 PM, Harry Hoffman <hhoffman@ip-solutions.net>
wrote:

> Hi Edward,
>
> So, I'm hoping to prevent a recurrence of damage to my rain gutters.
>
> I've got Thule racks that extend beyond the width of the van. I have, on
> occasion, struck the rack side rail against a tree limb which actually tore
> into my rain gutter :-(
>
> Cheers,
> Harry
>
> On Jun 4, 2017 9:32 AM, "Edward Maglott" <emaglott3@gmail.com> wrote:
>
>> I've seen these on Banggood and was interested but have never bought one.
>> https://www.banggood.com/search/car-parking-sensor.html  They have some
>> on
>> their US site if you don't want to wait for shipping from china.
>>
>> Harry are you looking for something that will warn you when you are
>> driving
>> if someone is in your blindspot, like what is available in some new cars?
>> I rode in a rental with that and it seems like that would be quite helpful
>> in a vanagon but probably quite  a challenge to implement.
>>
>> Edward
>>
>> On Sun, Jun 4, 2017 at 9:08 AM, Dug Smith <dug@dugbert.com> wrote:
>>
>> > I honestly don't remember where I got them, but it'd be something like:
>> > http://www.slickcar.com/reverse-backup-sensors.asp
>> >
>> > On 6/3/2017 22:50, Jared Planter wrote:
>> >
>> >> Can you share a URL to the set you purchased?
>> >>
>> >
>> > toodle pip,
>> > --
>> >       Dug Smith          | Terry Pratchett: It's almost
>> > (mailto:dug@dugbert.com) |  impossible to ride a rock and roll
>> > (http://www.dugbert.com) |  motorbike and stay on for three verses.
>> >
>>
>