As part of their efforts for a Belgian "Arduino jam", Instructables user 'jekkos' created a completely different kind of LED matrix display using the remnants of an old inkjet printer. The display also operates in a similar fashion to it's roots - by moving an 8x8 LED matrix one character at a time and displaying each character in turn. A perfect subject for time-lapse photography. Furthermore the whole thing has been interface with a Raspberry Pi to make text entry simple. You can see it in action in the following video:
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