BASH Pushover Notifications

A few days ago, I started a process that involves very heavy file processing operations that take anywhere from 10 minutes on the low side to 30 minutes on the high side. Wanting to be as efficient as possible and …

Dim Bulb Tester

WARNING: This post involves live mains electricity and is EXTREMELY DANGEROUS! Do not attempt this project on your own unless you are qualified to do so. I advise you to engage a licensed electrician to help you build this test …

Evernote, Wine and Xubuntu Linux

When it comes to Linux, the best desktop note taking tool, in my opinion, is Zim Wiki. I love this tool and have used it for a long time. That said, the 800 pound gorilla of note taking tools is …

Asterisk on AWS Linux

A couple of months ago I decided to move my company’s Asterisk PBX system from one of our physical data-center servers to Amazon’s AWS EC2 Platform. We had been using Trixbox since 2006, but the Community Edition of that product …

How To Properly Test Batteries

Testing batteries seems like an overly simple topic for a blog post, but unless you have a good quality battery tester, then chances are you’re not testing your batteries correctly. When testing with a multimeter, most people will simply take …

Detecting Failed AD2USB to Raspberry Pi Connections

One of my ongoing home automation frustrations is the interface between my Ademco Alarm Panel and the Raspberry Pi I use to monitor the panel’s bus traffic. The problem that I have is a termination of the USB connection between …

EC2, UFW and Broken SSH Access

I’m a big fan of Amazon’s EC2 platform and long ago migrated all of my servers to its “cloud”. I’m also a realist when it comes to security and take all of the reasonable precautions I can to limit my …

Guest Wireless VLAN Via Airport Express

Wireless networks have become ubiquitous. We use them at home, work, mall, airport, coffee shop and just about everywhere else we go. When setting up a wireless network, it’s wise to spend some quality time considering how you plan to …

Infinite Video Loops on a Raspberry Pi

I recently upgraded my office by moving to a great new location. As part of the move I added a ton of new space to accommodate our rapid growth and even added a “play area” for the staff so they …

Soekris net4801 pfSense Router

I’ve been running a pfSense router on a small form-factor PC for a few years and have been happy with my setup. What I don’t like though is that the PC is relatively loud and draws way more power than …