Archive for the 'Raspberry Pi' Category

Linux Infrared Control Part 1: Receive IR

Sunday, October 29th, 2017

tl;dr

Would you like to use a remote control to control your computer? How about using your computer to send remote control signals to your TV or Stereo instead of using the remote?

This is the first in a series of posts where I will describe how to use a Raspberry Pi, Raspbian and Linux Infrared Remote Control (Lirc) to receive and send infrared remote control signals. This first post will be focused on setup and receiving input.

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Video Game Console Cabinet

Thursday, August 10th, 2017

tl;dr

I created a custom cabinet for my video game consoles, AV switch and Framemeister. Includes removable back panel to access and manage the cables.

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Raspberry Pi Full Screen Browser (Raspbian July 2017)

Saturday, July 22nd, 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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Raspberry Pi Full Screen Browser (Raspbian November 2016)

Thursday, December 29th, 2016

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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stupid-remote: a HDMI-cec node.js Web App

Monday, December 19th, 2016

tl;dr

A web app to control devices over HDMI-cec, turning tvs on and off, switching inputs adjusting volume. New project, customization requires editing simple HTML and JavaScript.

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Using cec-client on a Raspberry Pi

Wednesday, December 14th, 2016

Most modern HDMI connected devices support Consumer Electronics Control (CEC). It allows devices to send commands to each other, typically to get the TV to switch input and control volume. If you have ever turned on a Game Console and had your TV automatically change input to that device you have seen CEC in action. It is very convenient and useful, sort of a universal remote that works.

Every manufacturer seems to have it’s own branding of CEC (e.g. Samsung Anynet+, LG SimpLink, Sharp Aquos Link) but it may need to be enabled. Check your manual for details.

Using a Raspberry Pi connected to a TV that supports CEC, you can use the command line `cec-client` application to control the inputs and the TV itself. These are notes on how to use `cec-client` and understand the different options.

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Raspberry Pi Full Screen Browser (2015)

Wednesday, February 18th, 2015

Dashboard

Running full screen browser on boot

This is part of a series on running a browser full screen on a Raspberry Pi at boot.
The most current version is here:
Raspberry Pi Full Screen Browser (2020-05-27-raspios-buster)

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Arduino Screen Controller for Raspberry Pi Part 3 Hardware Final

Sunday, April 28th, 2013

A few months ago I setup a web browser based dashboard running on a Raspberry Pi, displaying weather, time and transit information.  It worked out well, but it’s success revealed another problem.  Turning the screen on and off multiple times a day was getting old.

So I did what any technically inclined person would do.  I decided to create a device to turn the screen on and off by responding to dramatic changes in ambient light.  The device would also provide a manual power toggle and button to refresh the browser.

This is part 3 of 3 describing the final hardware that was built from the prototype.

Although intended to be used with a Raspberry Pi, the screen controller can be used to emulate a USB keyboard and send any desired keystrokes.

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Arduino Screen Controller for Raspberry Pi Part 2 Hardware Prototype

Sunday, April 28th, 2013

A few months ago I setup a web browser based dashboard running on a Raspberry Pi, displaying weather, time and transit information.  It worked out well, but it’s success revealed another problem.  Turning the screen on and off multiple times a day was getting old.

So I did what any technically inclined person would do.  I decided to create a device to turn the screen on and off by responding to dramatic changes in ambient light.  The device would also provide a manual power toggle and button to refresh the browser.

This is part 2 of 3, describing how to use an Arduino to build a USB keyboard emulator to call the hot keys.

Although intended to be used with a Raspberry Pi, the screen controller can be used to emulate a USB keyboard and send any desired keystrokes.

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Arduino Screen Controller for Raspberry Pi Part 1 Hot Keys

Sunday, April 28th, 2013

A few months ago I setup a web browser based dashboard running on a Raspberry Pi, displaying weather, time and transit information.  It worked out well, but it’s success revealed another problem.  Turning the screen on and off multiple times a day was getting old.

So I did what any technically inclined person would do.  I decided to create a device to turn the screen on and off by responding to dramatic changes in ambient light.  The device would also provide a manual power toggle and button to refresh the browser.

This is part 1 of 3, describing how to create a script to turn on and off the screen and hot keys to call this script.

Although intended to be used with a Raspberry Pi, the screen controller can be used to emulate a USB keyboard and send any desired keystrokes.

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