How-To

Reverse engineering a HRV protocol

Over the past few years, I’ve developed a strong interest in home automation. For example, Home Assistant automatically controls the interior climate by managing the thermostats, opening and closing blinds, and running expeller fans to manage humidity. After installing a Fantech Hero HRV to improve interior air quality, I was disappointed to find there was no existing Home Assistant integration. My goal was to integrate the HRV into the automation system to optimize comfort and energy use: vent the minimal amount required to maintain air quality, while taking into account temperature set points, humidity, and outdoor air quality.

WHM zone transfers

OVH provides a secondary DNS service for its VPS customers (docs), however you must enable zone transfers to their server (sdns1.ovh.ca)

Alt-f Slow RAID Resync

When I was attempting to build a new RAID-1 array on a DSM-323, I was getting brutal performance. Tweaking speed_limit_min helped significantly.

Install Composer in Ubuntu

Rather than adding a composer.phar file to each project it can be easier to install composer to your linux distribution’s bin folder.

Reset Zend Server password on OpenShift

If you are using the Zend Zerver Installation on the OpenShift cloud and happen to forget your password, you may find yourself wondering where gui_passwrd.sh is located.