Category Archives: Home Automation

Security camera

This is a sort of an append-only history of details of the camera project.  After I get all the software and server hardware running, I should make a nice concise writeup of the whole thing.  Someday. I’ve about given up … Continue reading

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Home page speedup

This has been annoying me for years, and is finally very much improved. My home page would parse through the several megabytes of ascii sensor data to find the last typically 5 days’ data and generate the 5 graphs – … Continue reading

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Rain gauge repair

The rain gauge hardware out on the garage roof feeding info to my home automation system is pretty old.  It’s been in service I dunno – six years?, and on a shelf waiting to be installed for maybe 10 years … Continue reading

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Optical interface to water meter

I’ve wanted to be able to monitor household water flow for a long time.  A primary driver is to be able to spot unexpected use while we’re away, probably involving lots of water going where it shouldn’t – like from … Continue reading

Posted in Home Automation, Water meter reader | Tagged , , , | 6 Comments

Notes on DSL problem

My DSL internet connectivity via SBC/Yahoo/AT&T has been pretty good.  I’ve finally got some intelligence in the script that pings my ISP so it can power cycle the modem and router when it detects loss of connection, and I think … Continue reading

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Rebuilding my Pogoplug house monitor server

Ya know, you’d think there would never be a situation when anybody would accidentally enter the following 2 commands in order: # cd / # rm -rf * That’s what I thought, too, until I just did it today.  Below … Continue reading

Posted in Home Automation | 4 Comments

Sump pump current sensor

This sensor has been part of the home automation system for several years.  It’s mounted to the wall, and the main AC sump pump is plugged into it.  It senses current to the pump, converting it to a logic level … Continue reading

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UPS battery monitor started!

My UPS is a big old sine wave clunker retired from work many years ago.  It works fine, but the only “management” info it provides is a dry contact closure when it’s on battery – not very useful to know … Continue reading

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Home automation reporting system

This is a work in progress! Overview The system starts with several small “sensor nodes” that monitor things (like temperature) or control things (like sprinklers).  They’re connected via an RS-485 network at 56Kb/sec on Cat 5 cable.  That cable also … Continue reading

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House monitor on Linux!

I’ve been trying to migrate the main server program for the home automation system off the main PC for a couple of years.  It’s a hassle to shut everything down gracefully when Microsoft pushes down yet another must-reboot update, and … Continue reading

Posted in Home Automation | 11 Comments