Board Game Position
i trying build board game has curved paths. want illuminate player's position on path during gameplay. need 3 rows of 120 lights each make happen. kicker is under strict $100 budget. have arduino uno, isn't factored budget.
does have idea how this? thank help!
richard
does have idea how this? thank help!
richard
you can bulk packs of leds quite cheaply on ebay (i've found 100x 5mm leds gbp 2.99). best way drive them either 6 x 60 multiplexing (requiring 8x 8-bit shift registers such 74hc595 , 60 series resistors), or 8 x 45 multiplexing (requiring 6x 8-bit shift registers , 45 series resistors).
the best way wire leds shift registers , column drivers depends on combinations of leds need lit @ time. 74hc595 has total current limit of 70ma. if need light leds attached @ once, limits 9ma per led. showing path, choosing layout of matrix appropriately, can reduce number of leds connected each shift register concurrently illuminated, allowing use higher currents.
the best way wire leds shift registers , column drivers depends on combinations of leds need lit @ time. 74hc595 has total current limit of 70ma. if need light leds attached @ once, limits 9ma per led. showing path, choosing layout of matrix appropriately, can reduce number of leds connected each shift register concurrently illuminated, allowing use higher currents.
Arduino Forum > Using Arduino > LEDs and Multiplexing > Board Game Position
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