not sure about power for led matrix, need help?
I am putting together a 8x16 common anode RGB LED Matrix. I will be controlling the display with a Arduino, and using the +5V supply from the controller as my source. My Plan is to source the 16 rows and sink the 8(24 leads, 2colors only, saving the third for a future project). i'm working with 74HC595's to drive and 74HC595's with ULN2803's to sink to ground.
Do i need to use transistors to amplify the current to each row? and if so can i apply 5volts to the collector and the base to the 74HC595, with the emitter leading to the led row?
I am putting together a 8x16 common anode RGB LED Matrix. I will be controlling the display with a Arduino, and using the +5V supply from the controller as my source. My Plan is to source the 16 rows and sink the 8(24 leads, 2colors only, saving the third for a future project). i'm working with 74HC595's to drive and 74HC595's with ULN2803's to sink to ground.
Do i need to use transistors to amplify the current to each row? and if so can i apply 5volts to the collector and the base to the 74HC595, with the emitter leading to the led row?
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