Friday, 22 May 2015

TATE Britain // Open call for submission: Pixelate 1910

  • Tate Britain, 1910
  • Thursday 14 May , 10.00Sunday 31 May 2015, 0.00
  • The open call for submission is for young people aged 18–25

This open call for submission invites you to experiment with pixel art to transform selected artworks on display in Room 1910 at Tate Britain.

Simply put, a pixel is the smallest point that can be represented on a screen, and appears in the form of small squares, dots or lines, which make up every digital image. To pixelate an image is to abstract its appearance by changing, altering or manipulating the image pixel data. For example, expanding or reducing the pixels per inch (ppi), changing the shape of the pixels, or like some pixel artists, building a digital image from scratch, pixel by pixel.


Get involved

Take part by choosing one of the selected artworks from Room 1910, save a copy and get creative with its pixels.

Submit your pixelated artworks to us via the Tate Collectives Tumblr or by emailing

Dealine for submissions: Sunday 31 May at midnight.

A curated selection of your submissions will be screened at Late at Tate on Friday 5 June 2015 in Room 1910 at Tate Britain. 


Terms and Conditions

From the entries submitted Tate will, at its discretion, select those to be shown in the display as part of Late at Tate Britain, on the Tate website or on any other third party platform.
The open call for submission is for young people aged 18–25.

Don’t be rude. Anything defamatory or obscene won’t be accepted.

By sharing and uploading any contribution (including any text, photographs, graphics, video or audio-visual material) with Tate you agree to grant to Tate, free of charge, permission to use the material in any way it wants (including modifying and adapting it for future operational or editorial reasons) for Tate services in any existing or future media worldwide (including on Tate’s site accessed by international users) and in perpetuity. You waive any moral rights in your contribution in order to permit Tate to edit your material as appropriate. You also grant to Tate the right to sub-license these rights to third parties.

We won’t use your content for commercial purposes but we may use your content to promote our platform or project. If your content contains third party material e.g. images, video, music etc you must have obtained the necessary third party permissions to use the material.

Copyright in your contribution will remain with you and this permission is not exclusive, so you can continue to use the material in any way including allowing others to use it, including licensing that material to other websites.

If you do not grant Tate the permission set out above on these terms please do not submit or share your contribution with our to Tate.

View Tate’s full website terms and conditions.

Thursday, 21 May 2015

The Teletext40 editor

The Teletext40 editor is free, open source software is that allows you to create genuine, broadcast compatible teletext pages online.

To get started, see the ten minute tutorial or quick start guide.

Technical information can be found here.

Comprehensive user guide to follow.
 Did you know... you can edit any page at by hitting the 'edit' button in the right sidebar?

Teletext40 editor 10 minute tutorial

Well, perhaps that title is a bit ambitious, but the aim of this article is to have you creating teletext pages with the Teletext40 online editor in a matter of minutes rather than hours. It doesn’t help that I have just wasted 30 seconds of that time by adding a ‘humorous’ introduction, so let’s get to it.

If this all seems a bit daunting, think of your teletext canvas as a slightly more (less?) advanced version of Microsoft Paint, Super Mario Paint or even a piece of paper. The only difference here is that you must ‘program’ the page to tell it where you want to add text or graphics using character codes.

Programming graphics

Firstly, hit CAPS LOCK then ESC and Q to reveal character codes. We haven’t added any yet, so nothing should appear!

Using the arrow keys, move the rectangular cursor to the extreme top left of the canvas. Now, ensuring CAPS LOCK is still activated, hit ESC followed by either W (white), R (red), B (blue), C (cyan), M (magenta), Y (yellow) or G (green) to add a graphic character code.

Move the cursor to the first column of the next row and repeat the process. Keep adding graphic codes until each row has been programmed. You can now use your page much as you would a digital paint program.

Here's a page set up entirely with white graphics for you draw over with your mouse. Go on, try it out!

Adding text

You may have noticed that you can add capitalised text and certain punctuation marks in the aforementioned ‘graphics mode’. For full text capabilities, there is a dedicated ‘text mode’ that can be programmed in much the same way as the graphics.

To add alphanumeric characters, insert a ‘text mode’ character code to the start of a line by ensuring CAPS LOCK is released before pressing ESC then one of the seven colour keys.

Of course, it is possible to insert graphic or text codes anywhere on the grid, but be aware that it will result in a ‘blank’, uneditable space.

Notes on troubleshooting

  • You can delete a misplaced character code by highlighting that space with the arrow keys and hitting the space bar, or just overwrite it with a new character code.
  • Undo a mistake by hitting your browser’s back button and refreshing the page. You can also ‘save’ your page locally by copy-pasting the page URL to a safe location.
  • If your ESC button does not trigger, try using SHIFT+ESC to activate/deactivate character code mode.


You can save your page as a bitmap image by right clicking the canvas and selecting ‘Save Image As’, or share your page on the web by copy-pasting the full URL from your browser – all page data is stored right there in that very long URL! Here‘s a handy URL shortener in case your favourite social media platform doesn’t like you adding too many characters to your updates.

Don’t forget to post your url on Twitter! Tweet to @teletext40 or #teletext

Stuff that takes more than 10 minutes

But, but… there are loads more character codes in that list that you didn’t even mention!

That’s right, dear reader. Teletext is capable of so much more – just have a play around with the different functions, applying the same logic as above and see what you can create. Here are some brief pointers for teletext’s more ‘advanced’ options:

  • Steady and Flash (f and F) – apply flashing effect. Add a Flash code just before the spaces you want to blink, then apply a Steady code where you would like it to stop.
  • Normal and Double height (d and D) – make text or graphics two lines high. Note that double height graphics are a bit glitchy.
  • Hold and Release graphics (h and H) – make a character repeat across many columns. This allows you to, for example, fill spaces normally left blank by character codes.
  • Contiguous and Separated graphics (s and S) – activate/deactivate teletext’s trademark stylised graphic mode.

Further reading