Building a (Siri Controllable) Raspberry Pi Thermostat

When it first came out, I was really enamoured with the nest thermostat. The idea of a remotely-accessible, app-controlled thermostat appealed to the gadgeteer in me, but the price and lack of flexibility (it really wanted to be left alone to learn and do its own thing, as opposed to being controlled by a fixed schedule), plus my propensity to tinker, led me to build my own.

For a long while I had an Arduino-based thermostat running in my house, but I wasn’t very happy with it. Writing code for the Arduino isn’t always very fun (for me), especially when you want it to be web-accessible.

Then came the Raspberry Pi.

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The Cashflow

In Stephen King’s, The Langoliers, we are introduced to the creatures that consume the past, preventing us from ever returning to it. Merciless devourers, they relentlessly follow us all through time, ingesting history, insatiably pursuing us in an eternal chase.

As the story progresses, the main characters find themselves face to face with these gluttons, and they must do their best to outrun them; winning the race is their only hope.

As a micro-business owner I awake most days with the weight of an awareness on my shoulders; I must to attempt to evade my own kind of Langolier, the ravenous and unquenchable monster of Cashflow.

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Thwump

Thwump.

The first time you feel it your blood goes cold. The hair on the back of your neck might stand up. Your pulse almost certainly rises quickly, which does nothing to help.

You sit perfectly still. You’re probably holding your breath, but you don’t realize it. Like your rising pulse, this also does nothing to help.

You wait expectantly, but nothing happens.

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Dallas 18B20 Temp Sensors on an RPi2

I’ve have a handful of Raspberry Pis around, and several of them have Dallas 18B20 temperature sensors connected for data collection. Up to this point I’ve used all of them in 3-wire mode (Vcc, Data, Ground).

I just recieved my first Raspberry Pi 2 yesterday, and went to connect it to a network of 4 sensors to replace an Arduino I was previously using.

I ran into a few snags. Here are my notes:

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Apple Watch, Two Weeks In

It’s been 2 weeks since my 42mm Apple Watch Sport arrived. (So much for not “getting one immediately”, I know). So far the experience has been mostly great.

At this point I’m dividing my thoughts into three categories: Frustrations, Delights, and Hopes.

Frustrations

Delights

Hopes