Increase 30 Second Screencast Limit On Fedora 21

I wrote a post a little while back explaining how to use the built-in screencast tool on Fedora 20.

I’ve just noticed that the latest Fedora release (21) limits the screencast length to 30 seconds.

Nooo!

It’s okay. If you want to record for longer than 30 seconds, you can change the time using gsettings.

View the existing time with:

gsettings get org.gnome.settings-daemon.plugins.media-keys max-screencast-length

And set a new time (0 for unlimited) with:

gsettings set org.gnome.settings-daemon.plugins.media-keys max-screencast-lenth

gsettings

Nice and easy ­čÖé

Raspberry Pi Knight Rider LEDs Part 2

Now we’ve got one LED up and running, it’s pretty easy to expand this to make a light bar like K.I.T.T.’s.

Step 1 – Wire up the breadboard

The next thing we need to do is switch everything off, and then wire up the breadboard as per the circuit diagram below. Leave the female ends of the jumper wires dangling for now – we’ll plug them into the Pi in step 2.

knightrider_bb

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Raspberry Pi Knight Rider LEDs Part 1

This is the first part of a two parter on creating the K.I.T.T. light bar with LEDs using your Pi (I know, awesome, right?).

Here’s mine in action:

In this section we’ll install the wiringPi library on the Raspberry Pi, connect up a single LED, and write a simple program in C to make it flash.

In part two we’ll connect up more LEDs, expand the code, and then travel back to the 80s with our finished product.

Read moreRaspberry Pi Knight Rider LEDs Part 1

Headless Boot Of Raspberry Pi Using A Static IP Address

(Looking for headless boot using DHCP?)

If you don’t have a DHCP server running on your home network, or you want to allocate a specific ip address for your Pi – maybe because you want to access it via a second network port on a local machine, or via a standard hub – you can still headless boot by setting the ip address on the SD card beforehand.

You will need:

  1. A computer running Linux (mine is Fedora 20).
  2. A Raspberry Pi and compatible power adapter.
  3. An ethernet cable.
  4. An SD card for the Pi OS

Read moreHeadless Boot Of Raspberry Pi Using A Static IP Address