Bill Wright wrote:
On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!


Acquiring a Bicycle wheel with a hub dynamo could be a solution for that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience cant you fix one on the gate to get some
energy from Radio 4 long wave or something.

GH