Thanks for all the ideas. I don’t think a WiFi solution will work because I want to completely power down the system. There’s not too much power, as I would only need to switch the control power; all the high power circuits need only be switched through their respective relays.
One other idea is to latch the power on via the 3.3v power supply on the pi, which can apparently be configured to turn off when the pi is shut down. Then run a script that waits for a gpio input and shuts down. > On Feb 15, 2022, at 11:57 AM, gene heskett <ghesk...@shentel.net> wrote: > > On Tuesday, February 15, 2022 11:10:30 AM EST Greg Bernard wrote: >> Perhaps this is what you're looking for? >> http://www.mosaic-industries.com/embedded-systems/microcontroller-proje >> cts/raspberry-pi/on-off-power-controller > > Sweet, the perfect companion to my idea. > Bookmarked for future reference, thanks Greg. > >> On Tue, Feb 15, 2022 at 8:28 AM Thaddeus Waldner <thadw...@gmail.com> > wrote: >>> On a small cnc machine run by a raspberry pi, I’d like to set up the >>> main power to accomplish the following: >>> >>> 1)pressing the power button/flipping the switch turns on the machine >>> >>> 2) pressing the off button, the pi should first perform a shutdown >>> then turn off the main power to all control power supplies. >>> >>> 3) shutting down the pi via the user interface turns off main power >>> to all control power supplies when finished. >>> >>> I’m considering installing one of those powered mains disconnect >>> switches, the likes of what you find in office photocopiers and >>> industrial cnc machines. >>> >>> Any ideas? >>> >>> >>> >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
