Monthly Archive: August 2013

Aug 31 2013

Link: How to Enable TRIM For SSD in Ubuntu

If you are using a Solid State Drive (SSD), you should know that you shouldn’t run any defragmentation or free space consolidation software on it. So how do you clean up your SSD and free up the empty space? TRIM is the command we use to inform the OS to do the cleaning job. Windows …

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Aug 30 2013

Link: A Raspberry Pi File and Print Server

I was recently looking into the options to buy a living room “home server” to centralize certain services like file and print server, media server, etc. It didn’t take me long to realize that for less money I could get a whole legion of small microcomputers that do the same work better and more securely; …

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Aug 29 2013

Link: Weekend Project: Solar Powered, Outdoor Raspberry Pi

We’re a big fan of solar technology, and even bigger fans of the Raspberry Pi.  So when we found that Adafruit had some cool parts that would let us run a solar-powered Raspberry Pi, we got to work!  The idea is simple, a Raspberry Pi that can safely and happily live outside without any wires that …

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Aug 28 2013

Link: Simple way to control 12V DC Motor using Raspberry Pi’s GPIO port and NPN transistor

I needed to control a DC motor from my Raspberry Pi’s GPIO port as part of my time-lapse dolly project. I had to be able to turn the motor on for approximately 150ms which would in turn move the dolly along by 3mm. Full article here: Simple way to control 12V DC Motor using Raspberry …

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Aug 27 2013

Link: Raspberry Pi SOCKS 5 Proxy Server (AKA browse the web with an IP from a different country)

This is a small tutorial, which will show you how to set up a local Raspberry to serve as a so-called SOCKS 5 proxy-server for your local network. The Raspberry itself will connect to a remote server, which will then make the requests to other Internet servers with it’s own IP, thus masquerading the original …

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Aug 26 2013

Link: Raspberry Pi NAS

Why would you want to run a file server off a Raspberry Pi? Maybe you want a small server that is always on and low voltage. If you need something that you can send and recieve files to and from than this might be your solution. The Raspberry Pi is low voltage running at just …

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Aug 25 2013

Using irrecord to allow LIRC to recognize extra buttons, as from an unused remote and/or a Harmony remote

A few days ago we published an article on Using the Raspberry Pi to control AC electric power. We ended that article by showing how you could control the Raspberry Pi’s GPIO pins using a standard remote associated with a Home Theater PC on the same local network. Actually, come to think of it, there’s …

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Aug 24 2013

Link: Tunnel DNS through ssh -D socks proxy

When using ssh -D to setup a socks proxy, DNS queries and DNS traffic are not sent through the ssh tunnel. However, with Firefox a config change can be made to send DNS traffic through the ssh tunnel. Here’s how it works! Full article here: Tunnel DNS through ssh -D socks proxy (

Aug 21 2013

Link: How to use the DS18S20 and DS18B20 temperature sensors with Arduino or Raspberry Pi

Did you know that you can measure temperature, from one or more locations, with a Raspberry Pi or Arduino? And that you can do it with as few as two wires (or even just a single wire with ground return, though three wires are preferred if available) connecting to as many temperature sensors as you …

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Aug 18 2013

Using the Raspberry Pi to control AC electric power

We were trying to figure out if a Raspberry Pi could be made to control a device that is powererd by 120 volts AC. Our first idea was to build a device based on this wiring diagram, which would have let us control two electric outlets individually, using GPIO pins 17 and 18 on the …

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