- Rebooting radio in Santa Cruz mountains once a week via GitHub script? - 4 Updates
- Oldschool tubes - 2 Updates
- What is the color code for a -10 ohm resistor - 1 Update
| harry newton <harry@is.invalid>: Nov 17 09:58AM He who is Jeff Liebermann said on Thu, 16 Nov 2017 16:03:27 -0800: > one hangs, so will the other. > I've also had the reboot timer in DD-WRT screw up on me a few times, > but that was long ago. For what I need, the watchdog feature "should" work fine, since if it's actually hung, I can always manually pull the POE for a minute (or put it on a weekly or daily timer). PS: The rains are coming. |
| Jasen Betts <jasen@xnet.co.nz>: Nov 17 09:51AM > acts on a hung device, say. > I know one or two, but they are expensive. > A timer reboot is too aggressive when a reboot is not needed. I used transitor driven relay wired to the RTS line of a serial port. open the serial device and the relay switches on, I used the normally- closed contacts to interrupt the DC supply to the flakey device (said DC supply also powered the relay) A cron job would check the status of the internet and do "sleep 10 < /dev/ttyS0" when a hard reboot was needed. -- This email has not been checked by half-arsed antivirus software |
| Jasen Betts <jasen@xnet.co.nz>: Nov 17 10:11AM ><https://www.google.com/search?q=apc+ap9211&tbm=isch> > Primary control is via ethernet, but some had a secondary control > channel via the serial port. I've got a server on another continent that I need to do an operating-system reinstall on. it's a 3 year old supermicro with the IPMI having a java-webstart based remote console. at some level it uses RDP, but seems to only work via the java web app. the IPMI allows viewing the console, turing power on and off, hard reset, turnging the identity LED on and off, mounting network files as boot media. etc. I'm going to try a PXE boot of Debian install medis from a server in the same rack. (the virtual medis boot is poorly documented) All this remote admin stuff is pretty insecure and, so runs on LAN addresses, not puclic IP addresses. The moral of this story, spend extra for server grade SSDs, don't use laptop drives. -- This email has not been checked by half-arsed antivirus software |
| "Carlos E.R." <robin_listas@es.invalid>: Nov 17 02:39PM +0100 On 2017-11-17 10:51, Jasen Betts wrote: > DC supply also powered the relay) > A cron job would check the status of the internet and do "sleep 10 < > /dev/ttyS0" when a hard reboot was needed. True, but I don't have any computer on that room. Have a look at these: http://www.hw-group.com/products/ip_watchdog/index_lite_es.html https://www.hw-group.com/products/ip_watchdog/ip-watchdog2_Lite_en.html They are the exact thing, but expensive for my needs. There are domotic switches, but those I find are controlled remotely via a phone app - however, as the device that hangs in my house is precisely the router, there is no Internet and those switches would not work remotely. I need something that acts on its own. I could use an arduino, but I'd have to learn how - which might be interesting, anyhow. The best and cheaper seems to be switches than have the chip "ESP8266 sonoff" and can be reflashed. But again, I need to learn the procedure and the programming. -- Cheers, Carlos. |
| John-Del <ohger1s@gmail.com>: Nov 17 04:14AM -0800 On Thursday, November 16, 2017 at 10:11:33 PM UTC-5, Michael Terrell wrote: > There are Jackrabbits and other animals that are a lot slower, and > provide more food than a Roadrunner. Not only that, but the Coyote is a > self described 'Genius'. :) Not all of them Michael, but the ones that are carry a business card that identifies them as such... |
| "pfjw@aol.com" <pfjw@aol.com>: Nov 17 05:23AM -0800 Nor does being a genius automatically confer common sense or rationality. A rational genius with common sense would not make a very good cartoon character. A good illustration of this point was in the first Indiana Jones movie - Indi is in the Souk chasing after the girl - and a very large individual with a very large scimitar appears. Indi calmly pulls out his gun and shoots him. That is common sense - and entirely unexpected. Goldfinger - Why the laser - just shoot James Bond. Were the villains to have common sense, there would be no story. Warner Brothers (mostly Chuck Jones) understood this completely. https://www.youtube.com/watch?v=S9dF5xuJBbM Peter Wieck Melrose Park, PA |
| Jasen Betts <jasen@xnet.co.nz>: Nov 17 09:30AM >>> Must be rough looking in the mirror... I'm just sayin' >> Then tell us what it's like. > So today you've decided you *do* care about my ignorant blather? Nah, he's either demonstrating that he's a nobody, or that your post was not ignorant blather. -- This email has not been checked by half-arsed antivirus software |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 7 updates in 3 topics"
Post a Comment