AC Infinity S3 fan
If you’re like most homeowners, you probably keep your receiver, amplifier, router, network switch, or any other electronic equipment inside a cabinet… which means you have a heat problem. Heat is the enemy of electronics, and circulating air through and around anything electronic is vital to its performance and longevity. This is the cabinet […]

Review: AC Infinity Airplate Cabinet Fan

Secure SSL Cert 1
There are a number of good reasons why you might want your own valid SSL certificate. Back in the day, self-signed certificates were popular because of the complexity and expense of SSL certificates signed by a Signing Authority. But today, there are a number of providers of free SSL certificates, […]

Create a Free SSL Certificate with StartSSL

"Forget" your access point(s) on your existing UniFi Controller before adopting it on your hosted controller
After writing the post on how to quickly upgrade your Ubiquiti UniFi Controller on non-Debian Linux boxes (I run mine on CentOS), I decided that it still wasn’t quick enough. So I threw together a script called that does the following: Stops the existing UniFi Controller Makes a backup of your old UniFi […]

Automated Script for UniFi Controller Upgrade on Linux/Unix Systems

UniFi Controller Setup Wizard 1
If you’re running the Ubiquiti UniFi Controller on a Linux box (I run mine on CentOS), the default instructions from UBNT walk you through building a simple SysV init script to run the Java .jar file as a service. I was in a tinkering mood, so I re-wrote the SysV startup script on my […]

Improved Startup Script for Ubiquiti UniFi Controller on Unix / ...

"Forget" your access point(s) on your existing UniFi Controller before adopting it on your hosted controller 1
UPDATE: I’ve written an automated script that performs all the steps in this article in less than 60 seconds. Feel free to follow the steps below if you want full manual control, or download my script to make your life even easier. 🙂 Ubiquiti Networks’ Java-based UniFi Controller software has a […]

Upgrade Your Linux UniFi Controller Version in 5 Minutes

"Forget" your access point(s) on your existing UniFi Controller before adopting it on your hosted controller 3
If you’ve ever set up a Ubiquiti UniFi access point, such as the UBNT UAP, UBNT UAP-PRO, or UBNT UAP-AC-PRO, you’ve had to run UniFi Controller software required to adopt, configure, and manage your UniFi devices. When I set up a UAP-PRO in our house (see my install guide) I ran the UniFi Controller software full-time on […]

DIY Cloud-Hosting a Ubiquiti (UBNT) UniFi Controller

LanmanServer now dependent on Drobo Dashboard
I’ve had a problem with my Windows 2008 R2 server for over a year that I could never figure out. After every reboot (which I only do after a Windows Update), shared folders were no longer available to network clients. My initial workaround was to RDC to the server, right-click on […]

Fix missing shares on Windows 2008 Server reboot with Drobo

Lux GEO WiFi Thermost 2
Thermostats have come a long way since the days of the gold-colored round Honeywell dial thermostats at your grandma’s house. Ecobee launched the first “smart” thermostat in 2007, but others like Google’s Nest and Honeywell’s Lyric weren’t far behind. But now even those manufacturers are shipping 2nd or 3rd generation hardware… meaning that […]

Review: Lux GEO WiFi Thermostat

Postfix 2.9 Upgrade
To help reduce the load on my Postfix mail servers, I rely on Postscreen (which is built in to Postfix) to help weed out bot spam and misconfigured mailers. And to reduce the load on Postscreen, one of my tricks is to whitelist the outbound IP addresses of a couple of […]

Postscreen Whitelisting of SMTP Outbound IP Addresses from Large Webmail ...

Setting up multiple WLANs in DD-WRT 24
For the past while, I’ve recommended DD-WRT K2.6 firmware builds for the Linksys E4200 router, as well as other Linksys / Cisco WiFi routers. The builds based on the newer K3.x Linux kernel have now reached a stable enough point where you can run them… but I still recommend the […]

DD-WRT K2.6 Kernel vs. K3.x and How To Upgrade

The Ubiquiti EdgeRouter Lite can replace the Google Fiber Network Box 26
I’ve been a Google Fiber user (and fan) since the service first hit Provo, Utah. I have a vacation home there, so while I don’t get to benefit from the Gigabit speeds on a daily basis, I certainly take advantage of it while I’m there. Because it’s a vacation home, I rely […]

Replace Your Google Fiber Network Box with a Ubiquiti EdgeRouter ...

Bandwidth test as Sender 1
In the top-right corner of the Ubiquiti EdgeMAX EdgeRouter’s GUI interface, you’ll find a Toolbox menu with plenty of goodies inside (assuming you’re running a version of the firmware that has them, such as 1.7.0+). One of the menu items lets you test the Bandwidth to or from your router: Selecting […]

Using the Ubiquiti EdgeRouter’s Built-In Bandwidth Tester

Ubiquiti UAP-PRO access point 20
Getting decent WiFi coverage at my house has always been a challenge. The house is three stories (the bottom floor is a daylight basement) and has a footprint of 50′ x 100′. A four car garage extends the footprint even farther to the south, and because I use WiFi-controller irrigation […]

How to Install a Ubiquiti UniFi Access Point Pro (UAP-PRO)

Linux Uptime
If you’re getting permissions errors when trying to update WordPress plugins or themes (or even WordPress itself), it can be a major pain to try and troubleshoot WordPress permissions, and the documentation is unclear on exactly what the optimal WordPress permissions settings are. I recommend these using the following four easy Linux […]

Correct Permissions for WordPress

CloudFlare 2
I went to update the mod_cloudflare package on a CentOS / RHEL box this morning, and ran unto the following problem: % sudo yum update -y mod_cloudflare Resolving Dependencies --> Running transaction check ---> Package mod_cloudflare.x86_64 0:1.2.0-1360806316.el6 will be updated ---> Package mod_cloudflare.x86_64 0:1.3.1-1.el6 will be an update --> Finished Dependency […]

Fixing “Public key for mod_cloudflare-*.rpm is not installed” Error

Relay assembly close-up. 11
Last week, I was working in my back yard when I noticed that the big red light on top of my septic system control box was lit up. That light is triggered when one of two alarm floats (in either the main effluent pump chamber or the clearwell pump chamber) detects that the fluid level in […]

How to Make Your Septic Alarm Smarter

Apple HomeKit 15
Last year, when the ecobee3 smart thermostat was announced, I published a preview, then a “first look” and unboxing video, followed soon after by the very first review of the ecobee3. I followed those up with an ecobee3 installation guide for new users, along with an ecobee Smart to ecobee3 upgrade guide for owners migrating […]

Review: ecobee3 HomeKit-enabled Thermostat

Sprinklers 34
“Smart” home devices don’t only make your life easier, but in many cases can also save you money. Readers of my blog already know I’m a big fan of ecobee’s smart thermostat products. They’re WiFi enabled controllers that use weather data available via the Internet to predicatively (and reactively) minimize HVAC system […]

WiFi Sprinker Controller Review: Rachio Iro vs. RainMachine vs. IrrigationCaddy

StrikeMeter Logo
I write lots of product reviews for “geeky” tech stuff (like smart thermostats, automatic toilet flushers, surge protectors, etc.). But when I get a chance to review some tech that also involves one of my other interests (karate in this case), I’m all over it. As a part-time karate instructor at Fairwood Martial Arts, one […]

Product Review: StrikeMeter by Martial Arts Instruments

Cisco/Linksys E4200 overclocked to 532 MHz 20
For the past few years, I’ve maintained an article on this blog offers my recommendation for the best DD-WRT build and settings to get max speed from a Linksys E4200 router. One of my recommendations in that article is to use the Administration: Commands tab in the DD-WRT GUI interface to […]

DD-WRT Speed Tweaks: Do they Really Work?

KOHLER Touchless Toilet Kit 23
My initial review of the KOHLER Touchless Toilet Flush Kit was positive… except for the part where the unit started to magically flush the toilet all by itself in the middle of the night. I called it the “phantom flush.” If you recall from my review, KOHLER promised to send me […]

Product Update: KOHLER Touchless Toilet Flush Kit Parts Upgrade

Linux Uptime 11
If you’re looking for the fastest and easiest way to get DMARC verification working on a RedHat (Fedora, RHEL or CentOS) mail server, I highly recommend OpenDMARC. I’m a bit biased, as I currently maintain the OpenDMARC package in the Fedora and EPEL repositories. This article will help you install the […]

Installing OpenDMARC RPM via Yum with Postfix or Sendmail (for ...

IMG_4819 7
For a few years now, I’ve been using a Linksys E4200 v1 router (running DD-WRT) as the main router at my house. However, because the WiFi signal from the router isn’t strong enough to reliably reach all the rooms in the house, I picked up a few inexpensive Belkin F7D3302 / F7D7302 […]

Adding Heat Sinks and Overclocking a Belkin F7D3302 / F7D7302 ...

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