Sue Zooki has brought this to us :
I have a leak from the main drain from the house, which unfortunately
runs under my garage base. I have a pit, 5'6" deep, in the garage, and
the water is seeping into the pit. Getting the job done is no problem,
but I want, if possible, to find exactly where the break or fracture is
to cut down on guesswork, and the amount of digging of course.

I toyed with the idea of using a webcam on the end of drain rods to take
a look for the break, but as it's at least 20 feet from the manhole, and
the maximum length for a USB 1.1 cable is only around 10 feet, that idea
was kicked into touch. Getting someone in with specialist camera gear is
out of the question due to cost.

Anyone have any other suggestions other than, "Get digging matey"?

Aldi and/or Lidl had a IR B/W security camera on offer some while ago
for about £30. They plug into a TV via a SCART socket, quite small, had
built in IR illumination and were designed for outdoor use so fairly
waterproof with a long lead. One of those might be just what you need.

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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.org