The project you can find on this page is a screen consisting of small bulb
(push) lights mounted on a wall. It is not entirely my idea, but I realized
part of it and document it here.
The screen contains 30 bulbs connected to two BlueSense open collector output
modules. Each bulb is 12V and 1.2W. The total maximum amount of power that the
screen will drain is 36W, at 12V this makes exactly 3A. The power supply used
is 13V at 5A, more then enough. NB. a small amount of voltage will stand across
the collector-emitter of the BlueSense modules and the cable from module to
bulb, thus 13V is correct.
The screen is laid out as six pixels wide by five pixels high, this way all capital characters can be properly displayed (see the image on the right).
On the bottom right you see a wireless router module connected to two open
collector output modules (click the images to enlarge). This controller setup
is connected wirelessly to a BlueSense USB router. The USB router is connected
to a Linux machine running a small program written in C. From a Windows font I
have captured the bitmaps, the bitmaps are then rendered into a frame buffer
according to a text (in the test case 'BlueMelon'). A software window is moved
from left to right over the frame buffer and then copied to the open collector
output modules. This way a scrolling text is visible on the screen. View the movie here!.
To accomplish this BulbScreen I have used a few BlueSense modules from Blue Melon.
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