Reading a Rotary Encoder from a Raspberry Pi

I wanted to attach a knob to my Raspberry Pi to act as a vol­ume con­trol for my MPD based jukebox. Tra­di­tion­ally vol­ume con­trol devices are imple­mented with poten­tiome­ters act­ing as inputs for ampli­fiers. A poten­tiome­ter is a hard­ware device with a knob or a slider that, in a word allows for a vari­able volt­age input into a cir­cuit. 1 The prob­lem here is that this is a very hard­ware ori­en ...

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Monitor an older UPS status with a Raspberry Pi

Here is a small mod I made for an OPTI-UPS VS575C. The ups has a serial port and works well with Windows, along with a serial to USB adapter and the Opti-UPS ‘Sentry’ software, the UPS can tell Windows when it has switched to battery mode on an AC power failure. This allows Windows to shut down properly if needed. The Sentry software is not available for Linux and the serial data is non-standard and not eas ...

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DIY Ambient Lighting with Hyperion. Works with HDMI/AV Sources || Raspberry Pi

This is an expansion of my previous Ambient Lighting build. Take a look at it first: http://www.instructables.com/id/Build-your-own-Amb... This time I will add a new function to my DIY Ambient Lighting. Until now It only works with the Raspbmc software. That means that I can not add Ambient Lighting to my PS3 or cable TV. That is about to change. Step 1: Watch the video! The video tells you all important st ...

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Host your own blog from a $25 Raspberry Pi computer

Now everybody knows it's way smarter to just pay someone to host your website. But what not everybody knows is that it's way more punk rock to Do it Yourself. So what follows are some tips / pointers / instructions for setting  up your own home webserver (which will burn a scant 2 watts) using all free, open source software, a Raspberry Pi, and your home internet connection. The emphasis here is on lightwei ...

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Instamorph Raspberry Pi Case

Bloominglabs has had two Build Nights recently, Instamorph and Raspberry Pi 2 / Adafruit. I have combined the two to make a case for the Raspberry Pi from Instamorph.Instamorph makes a nice material for making cases, as it's very sturdy, but easy to modify as needed for changes to your Raspberry Pi, or even reusing the Instamorph to make a new case should the design of your computer change, or you are using ...

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User Signalled Process System in Raspberry Pi

The Raspberrypi board is powerful enough to run large operating systems like Linux, Mac and Windows. The Multi-tasking Operating Systems can run several processes at a time creating and effect of parallel processing with the help of the high speed processor. The Linux Operating Systems provides Multi-User-Multitasking. Linux operating systems especially Ubuntu is preferred for all kind of programming and de ...

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The best Raspberry Pi power supply

Ok, since we already documented a little about the importance of a good PSU (Power Supply Unit) when audio quality is your main concern. As stated earlier, the raspberry pi power supply is also responsible for proper functioning of our tiny device, as a poor quality psu will result almost certainly in a corruption of your SD Card. So that’s why I’m stressing this a lot. Most of the times, malfunctions of th ...

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Raspberry Pi B+ Power Protection Circuit

The circuit functionality is mostly obvious. There is polyswitch F1, a self-resetting fuse which protects the RPI from overcurrent condition. There is the Transient Voltage Suppressor (TVS) diode D5 which protects the RPI against static discharge and possibly overvoltage condition. However, the function of mosfet Q3 together with the matched PNP transistors U14 is not so obvious. A mosfet is usually used as ...

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Named Pipe Example Using Raspberry Pi

The Raspberry pi is a device which uses the Broadcom controller chip which is a SoC (System on Chip). This SoC has the ARM11 processor which runs on 700 MHz at its core. The operating systems like Archlinux ARM, OpenELEC, Pidora, Raspbmc, RISC OS and the Raspbian and also Ubuntu versions are available for the Raspberrypi board. Linux operating systems especially Ubuntu is preferred for all kind of programmi ...

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Cubieboard/Raspberry Pi case from old external drive

This is the case I made for my Cubieboard/Raspberry Pi which, back in the day, was an external cd writer drive. This case includes: Power supply Silent HDD mount Fan with speed control The first step (for which I, unfortunately, don't have any pictures) is to take the case apart and remove all the old stuff. Step 1: Front Panel Since I wanted to maintain the old-school look, I had to attach the drive's fron ...

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