Hi all,
Recently I bought the optical pulse counter from OEM, and with some careful reading of the secs it's now "blinking" away. I connected it directly to the GPIO pins of my Raspberry. However, Just ground and power are connected right now, I don't know where I should leave the IRQ1 connection. All I need is to know which pin on the RPi to connect it to so that I can see the pulse when it comes. I can work my way from there. I was planning on programming my own command line interface. Just something simple that gives me a day to day, or hourly, status.
How do I get the pulse into my RPi without further hardware? (Which GPIO pin do I use.)
Re: Optical pulse counter, reading pulse through RPi GPIO pins possible?
Hi
Have a look here : http://wiringpi.com/
And here (Appendix B) : https://openenergymonitor.org/emon/opticalpulsesensor
Eric
Re: Optical pulse counter, reading pulse through RPi GPIO pins possible?
Yup, it's possible. We've done it :-)
Here is the example firmware for RFM69Pi + Pulse counting:
https://github.com/openenergymonitor/RFM2Pi/tree/master/firmware/RFM69CW...
You will need to compile and upload, see wiki instructions:
https://wiki.openenergymonitor.org/index.php/RFM12Pi_V2
You will need to wire pulse counter into INT1. Take a look at the RFM69Pi schematic :
https://github.com/openenergymonitor/Hardware/tree/master/RFM2Pi/board/R...
Re: Optical pulse counter, reading pulse through RPi GPIO pins possible?
Ah yes, but the solution you mention requires an additional board (RFM969Pi) ... and I was hoping to do this without any additional hardware. My RPi is about a foot away from my meter, so I can plug cables in directly.
Haven't looked into it the last few days, other stuff to do as well. :( But if there are more suggestions, I'm happy to explore them all.
Thanks so much for your help so far!