Monitoring Archive

I hate it when I’m away from home and either the ISP or some of my equipment glitches, necessitating a reboot or two.  I have enough systems in place that I should be able to automate this process.  To do so, I need to get some remotely controllable equipment, create the state diagram (not good if I power cycle one of the network components required to reach the remote switch and it doesn’t come back up!), and write the scripts to run the logic.

I’d also like to have easily accessible power switches in my data closet so I can power cycle the devices without having to pull them down and unplug the power from the back of them.

Hardware components I’ve looked at

SainSmart 16 channel web relay – at Amazon.  This could work if installed between the transformer block and the switches.

Ethernet relay on eBay, claims to be AC250V @ 10A, though that would probably be pushing it.  Would have to look up the specs on the relays they used.  For the watt draw on the AC, depending upon the size, might be able to install it inside a large surge protector housing and wire the outlets through it.

Controllable Four Outlet Power Relay Module – at Adafruit.  Not network connected, and would require some other device to control it.  But most likely UL listed and designed to handle AC.

Ended up finding a Digital Loggers LPC-3 on eBay for $57 shipped that should do the job nicely.  Manual is here.

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More 434MHz stuff to look at later

Posted August 20, 2016 By Landis V

Acurite #0899 self emptying rain gauge – at Amazon

Blog post on reversing the signal from Acurite temperature sensors; may be similar for the rain gauges.  Also mentions the RTL SDR.  Probably wouldn’t be bad to have.

Another blog post regarding reading the Acurite 5n1 station.  Possible that part of this will already cover the rain gauge.  Also discusses SDR and mentions the rtl_433 tool.

This blog post looks like rtl_433 supports the Acurite 896 decode natively, so if the protocol is similar or the same it may be simple.

RTL Software Defined Radio – at Amazon – seems like it’s probably a decent model, some good reviews.  Looks like there’s a little more to it than just “buy this and set up the software”.

Bought a cheap receiver off of eBay from Hong Kong for $7.31 (original listing).

Also, here was an Instructable about making a cheap combination RF/Bluetooth/433 MHz remote using an Arduino.

Additional Links

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http://dl.packetstormsecurity.net/papers/wireless/wireless-ids.pdf

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Using git (and Puppet) to manage configurations

Posted January 5, 2015 By Landis V

http://sickbits.net/nagios-deployment-automation-tips-and-tricks/
Specifically with Nagios in the case above.

http://www.linux.com/learn/tutorials/431119:weekend-project-using-git-to-manage-config-files

http://www.networkassassin.com/foss-solution-for-network-configuration-backups/
Great use of EEM to backup config.  It would be interesting to integrate Puppet into this setup and have the system receiving the configs first diff to see if there were any changes, then check with the puppetmaster to make sure everything was kosher.

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http://linuxgizmos.com/ringing-in-2015-with-40-linux-friendly-hacker-sbcs/

Pretty good board list, including a couple with dual ethernets, which is something I’ve been wanting to have.

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NfSen

Posted July 23, 2014 By Landis V

http://nfsen.sourceforge.net/

Need to do it.  And look at Linux flow exporting capabilities.

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http://www.computerworld.com/s/article/9247616/4_things_to_do_now_to_get_ready_for_the_Internet_of_Things

This is one of the areas where I think the results will live up to, and even exceed, the hype and expectations.  This was a pretty good read, with a combination of real world examples and some forward looking expectations that seem to be more than pie in the sky.

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