Tag Archives: guide

Creating Constrained Certificate Authorities

This blog post has been written in collaboration with Mohit Gupta whose blog covers cybersecurity and other random technical things. For our home labs, we have a number of internal systems shared between the two of us including a number of web services. Originally, these were accessed over plaintext HTTP connections, or bypassing any certificate… Read More »

A Primer on implementing POE devices

This is part two of a two part writeup on building POE (power over ethernet) devices. This part gathers together the information I discovered when going through this process with the aim to be a useful starting point for others looking to add POE functionality to a device. The previous part covered the design and… Read More »

Making PCB end panels for enclosures

When making custom electronics, producing a quality enclosure for the boards can make any project look more professional. There are a large range of enclosures which use end panels, such as the Hammond 1593 series, which can be replaced by custom panels fabricated using standard PCB production techniques.  The result is a good looking enclosure… Read More »

Using USB Type-C on hobyist projects

The new Type-C USB connector is the latest addition to the USB connector standards. It offers reversible plugs, direction independent cables, USB3.1 speeds, and 3A charging in a connector only a little bigger than the USB 2.0 MicroB connector. In order to add these capabilities the plugs and connectors have additional configuration pins to allow… Read More »