Hi Trevor Morris, have you tried using current sensor? i usually using these to monitor power consumption of any electrical device that using main power source (110V~240 V AC). Mine is using 8-bit microcontroller connect to analog pin, and the result is great. Take a look at this YHDC Non-invasive current sensor <https://www.amazon.com/SCT-013-000-Non-invasive-Current-Transformer-Arduino/dp/B07GFH7XYD?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-d-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B07GFH7XYD>
On Fri, Aug 17, 2018 at 2:58 AM Trevor Morris <trevormorrisso...@gmail.com> wrote: > > Looking for suggestions... > > I have an IOT device that has a BBB with a power cape powered by a 5vdc > psu hooked up to a switch and a 4g modem that are powered by a 24vdc psu > all powered off of an incoming 120vac line. > > The power cape is setup to gracefully shut down the BBB if the power is > off for more than 30 seconds coming off of the 5vdc psu. > > I'am adding an APC UPS in front of both of the smaller PSU's so that I can > keep the entire unit connected to the network on powerloss. > > What I'am not sure how to approach is monitoring supply current so that > the beagle knows when Line voltage is no longer being supplied. Some of my > ideas have included using one of the random sensors I see floating around > or using a NC relay and holding it open with power. I main want to be able > to send an sms to myself if the power switches to the UPS and I'am > currently less concerned about monitoring the status of the UPS or anything > like that (although that would be cool). More important that the device > tells me when it goes off mains power and when it goes back on mains power > so I can decide weather or not I need to go attend to it. > > Has anyone tried to do anything like this? Any suggestions for a simple > way to monitor when the current drops to zero with the gpio pins? Seems > like I should be able to do this some real ghetto, yet reliable way.... > > Thanks > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/1607db56-bf9b-42c3-9d44-8020da8fe55c%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/1607db56-bf9b-42c3-9d44-8020da8fe55c%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Rgds, Aston Blog <http://astonugroho.wordpress.com> | Twitter <http://twitter.com/astonix> | LinkedIn <http://www.linkedin.com/in/aston/> "If you are working on something exciting that you really care about, you don't have to be pushed. The vision pulls you." (Steve Jobs) -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CA%2B9kmzzK7b%3DpfJGCfE5XtrAVGzp3R3LMRmvZn1qzBV6-B3_3%2BA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
