Gallery, Projects and General > The Design Shop

How can you "drive" a wind clock?

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BillTodd:
I've seen this done in a couple of clever ways:

a) I used to repair and fit Yacht electronics and one make Mariner used a neat & simple 3ph potentiometer linked to a small 3ph motor in the head unit (see pic below). The pot, made by Penny&Giles, was the better part of £100 back then :(

b) Saw this idea in an electronics mag's and thought it worth keeping.
The idea is that the wind speed vane, scans the direction vane producing two pulses . one pulse produced by the speed vane is counted to measure speed and it is also used as a reference to  time the direction pulse . measuring the delay between pulse thus gives direction.

[edit] thinking about it, the pot may have been configure as below.

Bill

lordedmond:
I have seen systems in place at some old hotels we have stayed in it seemed to be very small unit they were old so no new finagled stuff

They were both at golf related ones Turnberry and Gleneagles ,but  have seen them in many more

Or you could take the easy way out
http://www.amazon.co.uk/Replacement-Direction-Sensor-Weather-Statoions/dp/B00FQGV8RM/ref=sr_1_2?ie=UTF8&qid=1408614085&sr=8-2&keywords=wind+direction


Stuart

BillTodd:
Video of the mariner system working sort of - I think the pot and/or motor  is faulty (which is why i have it in the spares draw)

     

Bill

awemawson:
Cheap synchros on ebay:

http://www.ebay.co.uk/itm/CLIFTON-PRECISION-TANDEM-SYNCHRO-400Hz-UTTH-11-RS-/120869094002?pt=LH_DefaultDomain_0&hash=item1c245c0272

Eugene:
My head hurts!  :scratch:

Thanks for all the responses guys, lots of things to ponder over, but Bills wee demo and the link provided by Andrew look pretty promising.

Andrew, would two of the doo dahs in the link do the job (ie one drive t'other) without any advanced electrical / electronic knowledge? If "yes" then it's worth ordering a pair just to play with on the bench.

Floating another boat ... from 'O' Level physics class of '57 I recall the Wheatstone Bridge; even an electrical pudding like me could make a circular one mounted round a central shaft. There might be a null point to get round, but it would give an input into what would normally be a traditional galvanometer but could be a totally circular dial / pointer. Any mileage in that?

Regards

Eug

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