I have just finished the instalation of the OSD PRO ,it is a small CB with several servo like pins on 2 sides ,it processes the output of the data E logger that must be used with it to display the programmed peramiters of several vital systems on this sub or any machine for that mater.It is located up on the front top side of the power board,there is plenty of space there for it even a small ESC is there as well for the Bow Thrusters,then servo like power cable goes to the E Logger unit which is located underneath the power board where the camarra off on switch had been just double tape it there,its safe and dry in case of a leak.All of the sensors plug into it so there must be some space left over and easy acsses is important as a USB cable is plugged into it as well as needed only for programming which is only done once or if one adds more sensors.Wherte it is now is good since all I have to do is unscrew the 4 screws that hold the power board in place and out it all comes with extra extention wires or servo extention wires and plugs its easy to hook it all up,each is marked .
I can tell you it is fantastic to see and know live in real time action the state and status of the submarine from motor RPM/temp,Prop RPM ,ESC temp,battery remaining in percent and current draw of even the individual servos and deflection if you like !One does not need to put it all on there, just what you want and on 6 pages viewable by remote control by the use of 2 aux channels..The programming is so easy just plug in your sensors like rpm,temp one, temp two and the OSD ,then the USB supplied cable to your Laptop or PC and follow the easy to do steps,it even automaticly updates and instals it firmware!
I perchased this unit 4 years ago and used on choppers then onto subs as well ,it had to have an update and it did it in a few secounds ,very good reliable and simple to use not junk at all,this comany makes the best for the money in my opinion and have never had any complaints,the website is eagletreesystems.com .
It took me about an hour to get all the perameters programed in and am still experimenting on others like a compass readout which it displays if you have the GPS hooked up but I was thinking of a regular digital magnetic one that I could take its place.But if I go with the GPS expander unit I will get that and tons of other usefull stuff like RADAR function and Home arow ya it tells you which way is home no mater where you are,another thing current time elapsed,GPS readuots,signal strenght.I am curiuse to see if the Altitude ladder you know on fighters Jets and aircraft in general there is this instrument ladder readout it moves on the right side of the OSD or Heads Up Screen ,I think it might work on a sub to show the up and down movement of the sub,I dont know just how far down into clear water GPS works but hey my daughters I Phone is in a water tight case it has GPS maybe she might help with the experiment ,right .....

Anyway the OSD is a must for ROV ops and without costing an arm and a leg it is installed in my sub/s .I will post a vid soon.

The vids show what I have done to the aft and front sections .