Laser pointer controlled LED matrix game
This is a little cute game cube that is controlled only by simple laser pointer. The game itself is very simple – you have to shoot falling dots on LED matrix screen with laser pointer as long as you can to gain more points. During time dots fall faster and faster what makes it really challenging to beat previous records.
Laser Command from Eiji Hayashi on Vimeo.
But probably the most interesting part in its game is laser pointer detection technology. As sensing device it uses LED matrix itself. To do so there are two measurement techniques (reverse bias and direct measurement) used where one detects the row and second column at which LED laser is pointed. Game is controlled by Arduino mini board.



Freakin cool.
[...] LED gaismas (LEDs) – mazās lampiņas (spuldzītes), kuras parasti kalpo ilgi (ja nepabaro ar pālāk lielu elektrības daudzumu) un labi var noderēt, lai īstenojamajā projektā vizuāli parādītu notiekošo (piem., ja dati tiek ierakstīti, deg vai mirgo sarkana diode, ja deg zaļā diode, ierīce ir gatava nākamai darbībai). Protams, ir arī fancy projekti, kuros LED gaismas veido skaistu vizualizāciju vai pamatfunkciju (skat. te, te un te). [...]