OpenCV Face Recognition

tl;dr

OpenCV is an Open Source computer vision library that, among other things, can recognize faces, including eyes and smiles.

I set out a few weeks ago to build some prototypes with the library, to get an idea of how it works. I have created 3 prototypes, one that detects faces, one that detects eyes and one that detects smiles. All the projects are on GitHub here and they all use Python 3.

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3D Printing The first few weeks

In February I finally got a Prusa i3 Mk3 3D printer that was ordered in December, a very late Xmas gift. I had struggled with a MakerBot Replicator previously, but based on my research, I had high hopes for the Mk3.

This is the story of the first few weeks of 3D printing and what I learned.

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Filebeat on OpenBSD 6.2

I recently installed a new of OpenBSD 6.2 server. As part of that install, I needed to install Filebeat to forward logs to an ELK server (Elasticsearch, Logstash and Kibana).

The process to install and configure are much simpler then previous OpenBSD versions (as covered here) because Go 1.7 is now a simple binary package install.

The following steps assumes you have installed OpenBSD 6.2 and will cover dependent package and Filebeat installation, and configuration of Filebeat.

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OpenBSD 6.2 VPN Endpoint for iOS and macOS

tl;dr

The following instructions describe how to remotely connect to a network over an IPsec / L2TP VPN through an OpenBSD server, using native clients on macOS and iOS.

There are many VPN appliances commercially available that provide a nice UI and often come with an expensive support contract. If you are willing to roll up your sleeves a little and don’t mind using the command line, it is possible to create your own VPN server with OpenBSD.

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Raspberry Pi Full Screen Browser (Raspbian December 2017)

tl;dr

Steps to setup a Raspberry Pi running Raspbian to boot into a full screen web browser, hiding mouse pointer, disabling screen saver. Includes installing additional fonts and putting the browser in kiosk mode.

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