GPS log to Nasa Clipper Duet. Possible?

[Porthandbuoy]

At the beginning of this season I "invested" in Nasa Clipper Duet for Ladybird. I find the log impellor has a tendency to foul after just a few days on the mooring, and it's a wet pain in the proverbial to put it in and take it out at the beginning and end of every sail.
Is there some electronic genius who could turn the log into a gps repeater to show SOG?

 

[pvb]

Antifoul the transducer.

 

[Fantasie 19]

Been asked before funnily enough...

http://www.ybw.com/forums/archive/index.php/t-244777.html

 

[rogerthebodger]

At the beginning of this season I "invested" in Nasa Clipper Duet for Ladybird. I find the log impellor has a tendency to foul after just a few days on the mooring, and it's a wet pain in the proverbial to put it in and take it out at the beginning and end of every sail.
Is there some electronic genius who could turn the log into a gps repeater to show SOG?

OK the gps repeater can b fed by and GPS rs232 mouse and would show SOG.

It looks like the Nasa Clipper Duet take its signal from pulses and analogue depth transducer do no you could not feed the input for the Nasa Clipper Duet into the gps repeater.

With a little electronics (PIC) it would be possible to feed the output from a RS232 GPS mouse into the speed of a display that expects NMEA as my SIMRAD IS11 does. (yet another project to do at some time) This is the subject ot the thread Fantasie 19 posted.

 

[VicMallows]

Since you have a GPS why do you want the Duet to duplicate the display? Is it just for convenience/larger display? (That's why NASA sell their 'GPS Repeater' )

I guess if you really wanted to it would be relatively easy using a PIC to take an output (assuming it has one) from the GPS and convert the SOG to a pulse output replicating the output from the paddle-wheel transducer. Perhaps Angus might be interested?

(I agree with you that paddle-wheel transducers are a total waste of time ..... especially on a drying mud mooring)

 

[Porthandbuoy]

Since you have a GPS why do you want the Duet to duplicate the display? Is it just for convenience/larger display? (That's why NASA sell their 'GPS Repeater' )

(I agree with you that paddle-wheel transducers are a total waste of time ..... especially on a drying mud mooring)

Because speed and depth from the Clipper Duet are the only displays in the cockpit. Perhaps this could be a project for one of those raspberries. NMEA in, pulse out.