Ok, my super long reply is waiting on moderation. In the meantime, I have started: https://github.com/networkupstools/nut/wiki/DIY-UPS-with-and-Arduino
On Thu, May 16, 2024 at 10:59 AM gene heskett via Nut-upsuser < [email protected]> wrote: > On 5/16/24 08:59, Jim Klimov via Nut-upsuser wrote: > > I agree with earlier posters, such documentation can help future > > tinkerers. There is probably more than just one to hold the hand and > > walk through the ordeals :) > > > > Perhaps a new page at https://github.com/networkupstools/nut/wiki > > <https://github.com/networkupstools/nut/wiki> can be a good location... > > > > Jim > > > Great Idea Jim. > > > > On Thu, May 16, 2024 at 1:29 PM Bill Gee <[email protected] > > <mailto:[email protected]>> wrote: > > > > Hi Kelly - > > > > As an Arduino nerd, I am interested in this! I am sure others on the > > list would be interested. If nothing else, it would be nice to have > > some documentation in the archives. > > > > I assume you set it up as an online system rather than a standby > > system. > > Right? If true, then the choice of inverter is fairly critical. > It > > has to be bomb-proof reliable. > > > > What did you choose for battery voltage? What is the power capacity > of > > the inverter? > > > > Which Arduino did you use? All of my Arduino projects use the Pro > > Mini, > > though it would be quite easy to get some other model for this. > > > > Thanks - > > =============== > > Bill Gee > > > > On 5/15/24 20:11, Kelly Byrd wrote: > > > I put together my own DIY UPS, it's a RV charger/converter, an > > > inverter, and some batteries. I use an Arduino and the > > HIDPowerDevice > > > library (https://github.com/abratchik/HIDPowerDevice > > <https://github.com/abratchik/HIDPowerDevice> > > > <https://github.com/abratchik/HIDPowerDevice > > <https://github.com/abratchik/HIDPowerDevice>>) to get it to talk to > > NUT. > > > Been working great for months! > > > > > > The Arduino is connected to two modules: > > > * AC detection circuit to measure mains power on/off > > > * Voltage divider and an external ADC to get a reasonably good DC > > > voltage level for the battery which I turn into the a charge > > percentage. > > > > > > This uses the USBHID driver in NUT and "just works" as long as > > you're > > > using NUT 2.8.2 or later. I used the example code in the > > HIDPowerDevice > > > library as a starting point for running on my Arduino. > > > > > > I can share more specifics about the Arduino side of things off > > list if > > > you want, the NUT side of things is pretty boring and normal. > > > > > > On Wed, May 15, 2024 at 3:27 PM Kiril Zyapkov via Nut-upsuser > > > <[email protected] > > <mailto:[email protected]> > > > <mailto:[email protected] > > <mailto:[email protected]>>> wrote: > > > > > > Hello, > > > > > > I found out about NUT just days ago while searching for a > > solution > > > for my home setup. After some digging through the interwebs, > > I come > > > to you with questions. > > > > > > I'm putting together a DIY 12V UPS, very similar to what this > > guy did: > > > > > > [1] > > > > > > https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html > < > https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html> > < > https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html > < > https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html > >> > > > > > > The objective is to keep a bunch of mini PCs and network gear > > online > > > for as long as the battery lasts and then provide a mechanism > > for a > > > graceful shutdown of my NAS and other appliances for which > > cutting > > > power would not be healthy. The project above is missing the > > > "connected" part. I want to get mine to play with NUT nicely. > > Other > > > prior art is this project: > > > > > > [2] https://github.com/xm381/Raspberry-Pi-UPS > > <https://github.com/xm381/Raspberry-Pi-UPS> > > > <https://github.com/xm381/Raspberry-Pi-UPS > > <https://github.com/xm381/Raspberry-Pi-UPS>> > > > > > > Mentioned in a previous thread here: > > > > > > [3] > > > > > > https://alioth-lists.debian.net/pipermail/nut-upsuser/2018-August/011198.html > < > https://alioth-lists.debian.net/pipermail/nut-upsuser/2018-August/011198.html> > < > https://alioth-lists.debian.net/pipermail/nut-upsuser/2018-August/011198.html > < > https://alioth-lists.debian.net/pipermail/nut-upsuser/2018-August/011198.html > >> > > > > > > A valid approach -- emulates an existing protocol on an > arduino. > > > > > > Are there other similar projects that you know of? I found > > plenty of > > > "DIY UPS" projects, but none were "smart". > > > > > > I am able to put together firmware for some micro which will > take > > > care of measuring voltages, currents, possibly also turn > on/off > > > loads, serial or USB or IP are options. Not sure yet what > > hardware > > > features I'll put together, but this depends somewhat on the > > > approach for getting this thing integrated with NUT. PSUs and > > > batteries are already on the way, and my junk drawers have > most > > > other parts I may need. > > > > > > So, options found so far: > > > > > > * Use genericups. Least favorite option, very limited features > > > > > > * Use the same approach as [2]. If I were to go that route -- > > which > > > is the best protocol to pick for emulation? I'm looking for > > > something simple, extensible/flexible and well-documented. > > > > > > But what I really wish was possible was the ability to > > describe my > > > device in some format, feed it to a generic driver in NUT and > > > profit. I see some efforts have been made in this direction, > most > > > notably: > > > > > > [4] > > > > > https://github.com/networkupstools/nut/wiki/Data-Mapping-File-(DMF) > > <https://github.com/networkupstools/nut/wiki/Data-Mapping-File-(DMF) > > > > > > > < > https://github.com/networkupstools/nut/wiki/Data-Mapping-File-(DMF) < > https://github.com/networkupstools/nut/wiki/Data-Mapping-File-(DMF)>> > > > > > > What is the state there? Is it usable for USB HID? Or, how > hard > > > would it be to make it usable? Even a modbus description will > > do -- > > > implementing the modbus server (yes, server, I'm being > > > politically-correct) over serial or even TCP is easy, if only > > there > > > was a way to dump a CSV with register descriptions in some > > magical > > > driver... > > > > > > And yet another approach which comes to mind is to implement > my > > > driver as an external executable. This may be completely > > unfeasible > > > and stupid, and please let me know if it is. But, from what I > > > gather, drivers run in their own process and talk to the > > daemon via > > > a UNIX socket. Why not make it possible for the driver to be > just > > > any executable, built/deployed outside of the NUT codebase? > The > > > socket protocol seems simple enough, and this will allow for > ... > > > creativity. It could be implemented in any language (including > > > scripting languages) and need not depend on anything > > NUT-specific, > > > other than maybe some common CLI interface and/or > configuration. > > > > > > I'm hoping the NUT masters will have some insight. Thanks for > > > working on this! > > > > > > Cheers, > > > Kiril > > > _______________________________________________ > > > Nut-upsuser mailing list > > > [email protected] > > <mailto:[email protected]> > > > <mailto:[email protected] > > <mailto:[email protected]>> > > > > > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser > > < > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser> > > > > > < > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser < > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser>> > > > > > > > > > _______________________________________________ > > > Nut-upsuser mailing list > > > [email protected] > > <mailto:[email protected]> > > > > > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser > > < > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser> > > > > _______________________________________________ > > Nut-upsuser mailing list > > [email protected] > > <mailto:[email protected]> > > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser > > < > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser> > > > > > > _______________________________________________ > > Nut-upsuser mailing list > > [email protected] > > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser > > Cheers, Gene Heskett, CET. > -- > "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 > > > _______________________________________________ > Nut-upsuser mailing list > [email protected] > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser >
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