Archive for March, 2014

Rename a world in Minecraft Pi

Posted: March 31, 2014 by schoolpiclub in Minecraft Pi

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The building of our school in Minecraft Pi (MCPI) is going well so far. However we noticed that the worlds in MCPI are just called ‘world’, ‘world-‘ and our school was ‘world–‘. In order to avoid confusion we wanted to see how to rename the worlds. Our world has now been successfully renamed.

Here are the instructions on how to rename a world in Minecraft Pi:-

  1. Open up ‘File Manager‘ and click ‘View‘. Then tick the box that says ‘Show Hidden‘.
  2. Lots of folders will now appear. Look for one will called ‘.minecraft‘ and open it.
  3. Then open ‘games‘ dictionary, then the ‘com.mojang‘ dictionary and finally the ‘minecraftWorlds‘ dictionary.
  4. In here will be all the folders for your worlds. They will be named ‘world‘, ‘world-‘, ‘world–‘ etc. To rename the world, just right-click on one of these folders and click ‘Rename‘. Then just type what you want the world to be named.

Extra Raspberry Pi

Posted: March 25, 2014 by schoolpiclub in General News

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We now have an extra Raspberry Pi, Camera and Accessories to use at School Pi Club (Thank you to the White family for donating it). This week we started to set it up from scratch.

Those who were not at School Pi Club right at the very beginning are discovering how to set one up. Luckily we have blogged about it along the way so they can just refer back to past posts.

In the coming weeks we shall be continuing to build our school in Minecraft, doing more Monk Makes projects and planning our next time-lapse video.

Stay tuned!

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We had an extra School Pi Club today to check out our new Monk Makes Raspberry Pi Electronic Starter Kit.

The kit was kindly donated by the White Family – THANK YOU VERY MUCH!

The initial set up was very straight forward thanks to the easy-to-follow ‘Getting Started’ card. Today we checked out Project 1 – Make an LED Blink.

NJ took the lead with this project whilst JW guided him through the process. From the instruction card it wasn’t clear if the resistor should go in the slot D5 or B5 so we tested both. B5 was the correct one.

We were thrilled when we ran the python script and the LED started to flash!

We then had a closer look at the python code and changed the timing slightly between the LED flashing on and off.

At the next School Pi Club we shall be doing Project 2 – Make 2 LEDs Blink; TW will be taking the lead on that project.

School Pi Club – highly recommends the Monk Makes Kit http://www.monkmakes.com/#!/~/product/category=0&id=32645469

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Changing LXTerminal Window Size on a Raspberry Pi

Posted: March 9, 2014 by schoolpiclub in General News

I’ve noticed that depending on what display I use for my Raspberry Pi, sometimes the LXTerminal window size is too big.

Once you have established the size you want the LXTerminal window to be, follow these instructions to change the default window size.

  1. Right click on the LXTerminal shortcut on you desktop.
  2. From the menu select ‘Leafpad’
  3. In the window that opens up scroll right down to the bottom.
  4. Where it says
    Exec=lxterminal

     change this to

    Exec=lxterminal --geometry=70x23
  5. The 70×23 is the size you want the window to open in this example – 70 columns by 23 rows.
  6. Save and close the file.
  7. Activate a new window from the LXTerminal desktop icon. You should see a window open with the new size you specified above.

Here is a short YouTube video to show how we did it.

Geek On Radio Interview on Preston FM

Posted: March 9, 2014 by schoolpiclub in General News

Geek On PrestonFM

Today we featured on @GeekOnPFM radio show with Millie from Preston FM http://www.preston.fm. The interview was from the Preston Raspberry Jam on Mon 3rd March 2014 and it also features School Pi Club founder JW. The interview begins with TeknoTeacher (21mins 45secs) you can catch the whole show here….

 

Geek On #RJam (9th March 2014) by Millie Lavelle on Mixcloud

SD Card Partition sizes

Posted: March 9, 2014 by schoolpiclub in General News

Following on from our previous post Changing/Flashing the SD Card on a Raspberry Pi I noticed that the new 16GB SD card still read as 4GB within File Manager on the Raspberry Pi. This was due to a partition on the SD Card. This was easily rectified by going into the Raspi Config.

  1. Open LXTerminal on the Raspberry Pi
  2. Type sudo raspi-config
  3. Select option 1  – Expand File System as shown in the image below.
  4. Screen Shot 2014-03-09 at 17.46.50
  5. Once selected you will get the following message
  6. Screen Shot 2014-03-09 at 17.47.06
  7. It will then ask you to reboot the system.
  8. Once rebooted the correct size – 16GB – will then show in the bottom right-hand corner File Manager, as shown in the following image.
  9. Screen Shot 2014-03-09 at 18.06.20

Changing/Flashing the SD Card on a Raspberry Pi

Posted: March 9, 2014 by schoolpiclub in General News

Apple Pi Baker

It’s only a matter of time before the 4GB SD card in the Raspberry Pi becomes full. Time-lapse videos and photos take up a lot of space and up until now I’ve been deleting them once we have finished the project.

Just in case our next Time-lapse project is a big one I’ve decided to upgrade from the 4GB SD card (which came with the Raspberry Pi) to a 16GB SD card.

I purchased an ordinary blank 16GB High Speed SDHC card. The problem now is, I’ve  done a lot of work on my Raspberry Pi installing software, setting up camera modules, installing automated VNC setting on start up etc, so how do I transfer everything from the 4GB SD Card to the new 16GB card?

It’s not as simple as copying and pasting the files so I had to do a bit of research. I needed to make an .img backup from the 4GB and transfer this .img to the new 16GB. This link http://elinux.org/RPi_Easy_SD_Card_Setup  had all the information I needed. I use a MacBook Pro so I followed the instructions for Flashing the SD card using Mac OSX and I downloaded the ApplePi-Baker, this software was very easy to follow.

  1. First I insert the 4GB card into my Macbook and the SD was visible in the ‘Pi-Crust’ box (if your card does not appear press the refresh button to the right of the ‘Pi-Crust’ Box).
  2. I then pressed the ‘Backup SD-Card’ button and chose the location to save the .img file.
  3. The backup process will then begin and it will pop up to say when it is complete.
  4. Remember to unmount/eject your SD card before removing the SD card from your mac/PC.
  5. Next insert your new SD card.
  6. Again the new SD card should now show in the ‘Pi-Crust’ box.
  7. Now select the ‘IMG to SD-Card’ button and browse to the location of your .img file.
  8. The .img installation process will now begin  and it will install on your new SD card.
  9. Again REMEMBER to unmount/eject your SD card before removing the SD card from your mac/PC.
  10. Once complete insert your 16GB SD card into your Raspberry Pi and all your work will be there.

If you’re a Windows PC user follow these instructions Flashing the SD Card using Windows