openplotter-gpio v3.x.x released

[Pantera]

New openplotter-gpio v3.2.24 published. We have added support for pulse sensors and we go from alpha to beta.

There are many things you can do with pulse sensors. This is an example to get RPM from your engine connecting the 'W' terminal or tachometer signal wire (using an optocoupler so as not to fry the Raspberry):



You can also get wind speed. This would be the settings for a Davis anemometer. To get linear speed from RPM values you need to provide the radius of the wind sensor:



And this would be the settings for a chain counter using a pulse sensor in the windlass. You also need the radius:



If you want to reset to 0 the "Revolutions counter" and the "Distance" values you have 2 new "Actions" in openplotter-notifications app to be triggered when you need.

Please test and report as usual.

Hi Sailoog, I have been struggling with the Gpio pulses setup to monitor engine rpm. I have made a circuit with an optocoupler as suggested Baileys, and have testet both the input pulses from the alternator and the output of the optocoupler going from 111hz to 400hz. For some reason Gpio pulses reads half the pulses, starting from 55, and tops at 95pulses. For some reason it’s unable to read higher frecuencies. I have tried different approaches to see if it’s a matter of signal noise but have failed. My tester has no problem reading the frecuencies. Y guess it has to do with the Gpio reads… any suggestions ? I have run out of options.