similar to: Weekend Puzzle: computer posing as an UPS

Jim Klimov via Nut-upsuser <nut-upsuser at alioth-lists.debian.net> writes: > I am experimenting with a Raspberry Pi, and it is fed from my PC > (Debian-ish Linux) that is in turn protected by an UPS - so runs NUT. > > As far as the Pi is concerned, the bigger computer is its wall power > source (provides the USB socket) and being a smart machine with NUT > running, it

I've not been able to connect to my ups using NUT 2.7.4 or NUT 2.8.0. 2.7.4 was installed as a package, 2.8.O was compiled from source. I've messed with permissons, everything is root:root and has the approprate read/execute permissons. I've tried two differnt UPS(es) APC & CyperPower. I'm running PI OS (Raspbian) on a Raspberry Pi3 model B. The port 3493 is open (UFW). I can

Hi, I'm building a DIY UPS for a Raspberry Pi using a 12V SLA battery, charger, and an off the shelf 5V regulator. To monitor the battery level I'd like to use an Arduino or similar type device. Since the Arduino can have a serial over USB connection with the Pi I'd like to implement a protocol that can be used with NUT. Does anyone know if something like this has already been done?

Hey folks, I'm designing a power management card for a Raspberry Pi, for an embedded application. Basically, here's the bits and pieces that would be on the card: - A 12V SLA battery charger, which can be powered from a wall wart or solar panel. - A pair of 12V->5V switching regulators, one powering the Pi and the other powering a built-in 4-port USB hub. - A USB capable

I couldnt find a previous posting on this in the archives, maybe it has already been mentioned. If you use a calculation to generate n observations in random number generators and you don't round to the nearest integer you may be generating n-1 numbers not n numbers as you thought depending on the storage precision of the calculation. e.g. > m <- 1000 > pi0 <- 0.9 >

Dear all, I need to do some calculation where the code used are below. I get error message when I choose k to be large, say greater than 25. The error message is "Error in integrate(temp, lower = 0, upper = 1, k, x, rho, m) : the integral is probably divergent". Can anyone give some help on resolving this. Thanks. Hannah m <- 100 alpha <- 0.05 rho <- 0.1 F0

Dear colleagues, This is not strictly a R question, but I hope it is ok to ask on the list. I fed a vector of p-values from about 20 million anova tests to the package q-value and obtained this output: > qsummary(asso_p.qvalue) Call: qvalue(p = asso_p.vec) pi0: 1 Cumulative number of significant calls: <1e-04 <0.001 <0.01 <0.025 <0.05 <0.1 <1

I am using storey's qvalue package but I keep on getting errors. Why is this? > qvalue(p, lambda=0.5)$pi0 [1] "ERROR: p-values not in valid range." Error in qvalue(p, lambda = 0.5)$pi0 : $ operator is invalid for atomic vectors -- Thanks, Jim. [[alternative HTML version deleted]]

Did anyone else just get what looks like a phising attempt pretending to be from digium? It appears to be full of links to http://app.en25.com/e/er.aspx I must admit, it looks genuine.

Hi all, I want to draw a histgram for each row of a matrix and compare them. However the plot I got does not have the same y range and x range, which makes it difficult to make the comparison. Is there a easy way to fix the x range and y range in a xy plot for several plots, instead of specifying them for each plot. The following is my code for generalizing the matrix and draw the histogram.

Now that upsstats.cgi works, I've noticed that dummy-ups changes state every 5 minutes between OL and OB (probably when the 300 second timer expires). The UPS state stays online. Also "online" and "onbatt" are broadcast to the console probably via WALL. (The state changes don't seem to be form the ups as upsshed-cmd doesn't run). Upssched-cmd does run when the UPS

> Do you think there could be some merit in either embellishing dummy-ups or deriving a new driver from it that is sanctioned as a 'file-based' interface for NUT? I'd say one problem would be relative inefficiency and overheads: you have one process talking to the device to extract data, save it into a file, another process to regularly fopen() and read it and tell `upsd` to

Maybe this will clear up what I was initially thinking. In this diagram all lines on the right of the UPSs are power lines and all lines on the left are serial/usb lines. .---. +--|UPS+-----+--------+--------+---... | | A1| | | | | '---' .---+--. .---+--. .---+--. | |Server| |Server| |Server| | | A1 | | A2 | |

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... >

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 can be a good location... Jim On Thu, May 16, 2024 at 1:29?PM Bill Gee <bgee at campercaver.net> wrote: > Hi Kelly - > > As an Arduino nerd, I am

Hey all, I've read through as many relevant mailing list posts and public blog posts as I could, but I can't seem to find an answer to my issue. I currently have 2x Tripp Lite SMART1500LCDXLs, and I am attempting to monitor both of them with the same Raspberry Pi using NUT. The problem I have is there doesn't seem to be any way in the nut.conf to differentiate between the two UPS via

Greetings Gentlebeings, I have started deploying a number of NUT instances on Raspberry Pi machines (Raspbian Jessie) across my network. The purpose of these "nutcases" as we refer to them is to monitor the status of the UPSs supporting our network switching infrastructure and notify us of power and battery events via email. No shutdown or other actions are required. Everything is

I am puzzled by a filtering problem using fft(). I don't blame R. I have a waveform y consisting of the sum of 2 sinewaves having freqs f1 and f2. I do s = fft() of y. Remove s's spike at freq=f2 Do inverse fft on s. The resulting waveform still has a lot of f2 in it! But the filtering should have removed it all. What is going on, and how to fix?? Thanks very much for any help. Bill

Hi there, Seeing an odd behaviour when running upsmon -c fsd to test my Raspberry Pi (running Jesse Lite) setup as a upsmon master, attached via USB to an APC Back-UPS XS1300. The Raspberry Pi is plugged into the Master outlet on the APC. The UPS clicks onto battery (and the fan spins up) for a few minutes, then resets, then repeats again, while finally remaining on AC power afterwards. The

Looks very great, thanks for writing this! I gather you'd port this to the Wiki page you've started, too? A couple of comments: > So I run a NUT server on a Raspberry PI which is connected via USB to my DIY-NAS Arduino. DIY-UPS? > See drivers/arduino-hid.c for the list of supported IDs... Since NUT v2.8.1 [PR #1369], the `usbhid-ups` driver allows the user to specify a