Wind Masthead Transducer Interface - Printable Version +- OpenMarine (https://forum.openmarine.net) +-- Forum: OpenPlotter (https://forum.openmarine.net/forumdisplay.php?fid=1) +--- Forum: How do I...? (https://forum.openmarine.net/forumdisplay.php?fid=3) +--- Thread: Wind Masthead Transducer Interface (/showthread.php?tid=3377) |
Wind Masthead Transducer Interface - aviljoen - 2021-04-08 Hi All, I've got a 45' Van de Stadt Agulhas here in South Africa. My old instruments are mostly all toast. I'm excited to pursue the OpenPlotter route! I would appreciate a first pointer towards how to interface a Raymarine Wind Masthead Transducer with the Pi running OpenPlotter? The Transducer has 5 wire connections: Red and Black is for power Green and Blue is for wind direction Yellow is for wind speed. Thanks so much! RE: Wind Masthead Transducer Interface - Techstyle - 2021-04-08 (2021-04-08, 02:29 PM)aviljoen Wrote: Hi All, the link below should help in what you should be seeing: https://forum.raymarine.com/showthread.php?tid=97 As for how to integrate it - the speed may work from the new GPIO pulses section - but I haven't used this. the direction is a analogue voltage which may need an analogue to digital converter to get in to the pi. if you have the ST50/ST60 wind indicator - see if it puts out an Seatalk 1 output (even if the screen itself is not working), this can be read into the Pi with a $3 optocoupler RE: Wind Masthead Transducer Interface - aviljoen - 2021-04-09 Yes, A2D converter sounds interesting. Possibly a simple circuit like this would suffice? https://kookye.com/2017/06/01/design-a-voltmeter-with-the-raspberry-pi-board-and-voltage-sensor/ Then how do I go about reading the value into- and displaying the value in OpenPlotter? RE: Wind Masthead Transducer Interface - Techstyle - 2021-04-09 I wonder is you could use this: https://www.waveshare.com/wiki/Current/Power_Monitor_HAT I was talking to somebody on the SignalK slack channel and they had made a plug in to get the results of this into signalK. you can use the extra 2 channels for battery monitoring. you would have to work out what the voltages meant in degrees, should be simple calculation RE: Wind Masthead Transducer Interface - aviljoen - 2021-04-09 (2021-04-09, 03:06 PM)Techstyle Wrote: I wonder is you could use this: Yes, spot-on, now I also see this board which includes ADC as well as all the standard motion and environmental sensors you could wish for. https://www.pishop.co.za/store/sense-hat-b-for-raspberry-pi-multi-powerful-sensors-sense-hat-b-for-raspberry-pi?keyword=Current/Power%20Monitor%20HAT&category_id=0 (2021-04-09, 03:06 PM)Techstyle Wrote: I wonder is you could use this: Hi Techstyle, How do I get to the signalK plug in you mention for this HAT? RE: Wind Masthead Transducer Interface - Techstyle - 2021-04-09 I am not sure how to tag another member and them get it but: you would ask member @xbgmsharp about it |