Hardware: Odroid XU4 as Plex Media Server

The Odroid XU4 – like a Raspberry Pi, but better.

As part of my efforts to be cloud non-dependent, I have a NAS full of several terabytes of music, movies, and TV shows. Plex is of course everyone’s favorite software for solving this problem, as it essentially turns your hard drive full of files into a private Netflix capable of streaming and syncing to any device.

1080p and commercial free, sorry Anthony.

The problem is that streaming and syncing is a very CPU intensive task and requires a server of substantial processing power. Is the cheap Odroid XU4 single board computer up to it?

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Big List of Useful Home Automation Nodes for Node-Red

An ongoing list of nodes I have found useful for constructing home automation flows. I have not included device platform nodes, as all state tracking and actions are performed in Home Assistant.

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The Open Source Smart Home: Getting Started with Home Assistant & Node-Red

Home Assistant is one of the most interesting open source projects I’ve ever come across. It interfaces with any device, platform, or service you can think of. It can connect all of your devices to make a truly smart home. With a little creativity almost anything is possible with Home Assistant, and best of all it’s private and totally under your control.

After using Hass to control my smart home for the last year, I started to hit the limitations of its YAML-based configuration. Any automation that was even moderately complicated required a lot of pieces spread out through the configuration files (see the sprawling “Creating an Alarm Clock” thread on the HA forums for an example). Doing simple things like if-then or a  loop required awkward workarounds. As my automations (and ambitions) increased in complexity, so did the time I spent trying to figure out what was going on.

That’s when I discovered Node-Red, a visual programming tool developed by IBM. Node-Red is the perfect complement to Home Assistant, allowing for very complicated logic to be constructed visually through a simple “flow” interface. It integrates seamlessly with Home Assistant. Let’s set it up.

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Presence Detection Part 1: Home Assistant & Bayesian Probability

One of the most useful things to track for home automation is whether anyone is home or not. If you want the lights to turn off when no one is home, the vacuum robot to run when you’re at work, or the heat to come on before you arrive home on a cold night you need to reliably be able to tell if the house is occupied.

How can we track the state of something that is not directly observable? We can’t plug ourselves directly into the internet (…yet). After trying several approaches to monitoring presence, I’ve come up with a method that is very near 100% reliable.

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My Smart Home: Hardware List

An ongoing list of all the hardware I’ve gradually acquired. Links are to Amazon, but if you are patient most things can be imported from China for much cheaper.

Want to get started in home automation for cheap? Check out my $200 DIY Smart Home Shopping List to get started with a great foundation of hardware for use with Home Assistant. Control devices over WiFi, Bluetooth, infrared, Z-Wave, Zigbee, RF, and build some basic sensors – all for less than most kits from one proprietary vendor!

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