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+--- Thread: NMEA2000 alarms - trigger RPi pin and sound alarm (/showthread.php?tid=3113)
NMEA2000 alarms - trigger RPi pin and sound alarm - olewsaa - 2020-11-26
Hi,
there are projects who listen on the CAN bus / NMEA 2000 and will trigger on selected alarm messages and change the state of a pin.
Since SignalK now digest and display NMEA data I'm missing a module, plugin, application that will trigger on these alarm messages
and alter a pin on the RPi via a DC solid state relay sound a nice loud alam horn/buzzer, light etc.
I have looked for this with limited success, I might have overlooked it, but nevertheless I would like to have this functions present with the RPi.
Building yet another device to connect is possible, but far better to use the already present computer.
It should be a doable job to intercept these alarm messages and use GPIO to convey the alarm to a pin.
Ole
RE: NMEA2000 alarms - trigger RPi pin and sound alarm - jim321 - 2020-11-26
node red
RE: NMEA2000 alarms - trigger RPi pin and sound alarm - olewsaa - 2020-11-26
(2020-11-26, 03:53 PM)jim321 Wrote: node red
While Node-RED probably is the right tool, it's would be nice to have some hints for someone who are not familiar with Node-RED.
It might already bee some schemes out there that do most of what I want to set up a flow for.
Ole
RE: NMEA2000 alarms - trigger RPi pin and sound alarm - Sailoog - 2020-11-26
The future openplotter-iot app does what you need. It turns any GPIO high if you set a signal k notification (Thresholds) for any Signal k key. I am still working on it: