We know that you can make a cool clock scope, but have you ever seen a video game played on a scope? Well have a look at Scopetris! It seems that one scope manufacturer actually put the game in the firmware of the scope.
"The two resistor ladders, interfacing ports on the AtMega32, were connected to an oscilloscope in X/Y mode. The position of the beam was thus controllable by simply assigning values to registers in the microcontroller. Now, what to do with that setup… Draw stuff on the screen of course!
Unfortunately the intensity of the beam was not controllable, as it is on true vector screens. But due to the nature of good old green phosphor, the thinkness of the line could be controlled by how fast the beam moves."
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