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Hi Frank! Sorry about the late reply…
work comes before play… I’ve been looking into it and by the
looks of things 4 wires is all that is needed for the thru hull…. VCC,
Ground, and 2 wires for the quadrature signal… I’m currently
drawing up a design for the encoder in some circuit design software, the only
thing that needs to be done then is the signal translated and displayed on a
screen, for this ive found some very very cheap microcontrollers with built in
LCD screens so actual degree’s could be displayed!!! , which could be
very easily programmed to do that… Also this would be capable of
monitoring the position of more than one thing!!! You could do both rudder and
stern dive planes… or motor pod angle etc etc… also this will sense
full rotation, 360 degree’s! J This is what I am using for a reference at
the moment.. Theres some rather mind numbing electrical reading below… but
it all makes sense and could be applied very easily… http://www.boondog.com/tutorials/mouse/mouseHackBeforeWeb.htm http://lims.mech.northwestern.edu/~design/mechatronics/2000/Team24/circuit.html http://lims.mech.northwestern.edu/~design/mechatronics/2000/Team24/encoder_circuit.html http://www.cyberresearch.com/content/tutorials/tutorial16.htm http://www.fpga4fun.com/QuadratureDecoder.html To make it water proof will be the only
mean feat! J I assume there are already thru hull connectors on the market etc???
or someone has designed some?? What are they like? The wires needed to go to
the sensors on the rudder/dive planes only need carry 5 volts and almost no
current… Cat 5 network cable (8 Conductors) would be enough to do 2 axis
of measurement… From: owner- In a message dated 3/15/2010 8:40:08 A.M.
Pacific Daylight Time, Stew@terminalsolutions.biz writes:
Hi Stew. Definitely interested. Although
I like Vance's idea of a mechanical indicator, some LED's would be pretty cool
as long as it's simple and reliable. The reed switches discussed are sealed in
glass and are so tiny that they probably don't need much additional sealing.
The problem is the number of wires that are needed, and the "black
hole" when you're between contacts. I was originally thinking about 5 LED's
per device. One for center, and two on each end. That would entail at least 6
wires. Although they are quite small, a complicated thru-hull would be
required. There are some 6 wire off-the-shelf penetrators that would
work. That still leaves the "black hole" problem. Alan's disk/strip
device would have a linear read out on a gage, no black hole. Or if tied into
Jen's circuit, it would light up and be seen in a dark sub at depth. Frank D. No virus found in this incoming message. |