Under Linux Conky polls the system sensors to display status for you. It is fairly straight forward for a programmer to configure. My configuration is shared here.
Category: Technical
Thunderbird -> Make E-Mail Links Open in Browser
he ThunderBird email client does not open links that I click in the browser. This time, the fix that worked is from
Apache2 access permissions changes — mod apache2.conf to fix
The infamous Apache2 “You don’t have permission to access / on this server” error started appearing after I updated my Mint/MATE system (Ubuntu) to version 17 (14.04). It is fixed by editing /etc/apache2/apache2.conf. Details in this article.
The care, feeding, and breeding of PayPal on your web site
As of today, 20140712, this tutorial actually works for collecting PayPal sales data after your web site visitor uses the PayPal button.
Solar Power
Current guess at specifics of powering your house with soar cells. Calculates number of cells needed, area they would occupy, and cost of cells at street prices.