jrudge
Well-Known Member
Thanks Jimmy
If he reads this, I would like to hear his solution.
Not sure I'll do anything because SWMBO and I can handle most situations on our own but I love this kind of mod.
I wonder of it would work with the MTU control panel.
Maybe another project.
The way all of the yacht controllers work ( and indeed the throttles) is the same.
The throttle is a potentiometer, and this varies a control voltage that is then interpreted by the clever box that manipulates the real throttles on the engine.
Assuming your throttle has Neutral, First detent forward, First detent reverse ... and then progressively faster but we are not bothered about that ...
Each of these has a reference voltage.
What I did ( and the commercial units do the same thing) is apply a shunt across the potentiometer using relays to change the Neutral voltage to tier the first forward voltage, or the first reverse voltage.
This is best done using a fine adjustment potentiometer. With the engines off you determine the fwd and reverse voltage.
Still with the engines off you apply your potentiometer and adjust it until on gives the forward voltage, and the other the reverse voltage.
To make it work you then switch in the required pot to adjust the reference voltage ... and the engine engages.
The principal is very very simple.
I then got a multi channel tx / rx board that allowed more than one channel to operate at one time - which hence allows you to have forward on one engine, reverse on the other and at the same time trigger the bow and stern thrusters.
The whole lot cost me about £150.
This is part of a thread, so that is another detail for now, but it is not difficult and the commercial price of £7000 is a p*** take. Their defecne is they have a patent. How you can patent the ability to remote control something is beyond me.