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4 Leds
5 months ago
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10. 4 Leds
5 months ago
4 RGB Leds working together.
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trying to drive a 8x8 matrix with max7221
several possibilities are explained :
- arduino.cc/playground/Main/MultiplexMAX72xx (a timer ISR cyclically power on/off each max... only one works at a time, but Persistence of vision does the job.. only tested with 2 colors and problem for SetRow and SetColumn functions)
- wiring.org.co/cgi-bin/yabb/YaBB.pl?num=1211977580/8#8 (without max, only transistors! I didn't test, i'm curious about performances)
- wiring.org.co/cgi-bin/yabb/YaBB.pl?num=1211977580/9#9 (transistors to shut lines + max to drive successivemy each color)
it is hard