row must be calibrated depending on the speed of the microcontroller being used. The target value is to use the longest delay possible without being able to see any flickering of the LEDs. The delay is desired to ensure that the LEDs are getting enough current each time to achieve full brightness. The counter variable outside of the for loop allows states to change according to the length of the duration variable.
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rowmustbecalibrateddependingonthespeedofthemicrocontrollerbeingused.ThetargetvalueistousethelongestdelaypossiblewithoutbeingabletoseeanyflickeringoftheLEDs.Thedela
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