pin 3, 5, 6, 9, 10, 11) which can output a PWM wave with analogWrite() function. It is an Arduino-compatible board, which is based on ATmega328P MCU The Seeeduino board is a good learning and evaluation board. PWM can be easily implemented in various ways on Arduino. Thus, a 100% duty cycle means the signal is always on (full-scale), and the 0% duty cycle means the signal is always off(grounding). If this ratio is greater than 50%, the logic high signal takes up more time in the cycle than logic low, and vice versa. This is the same as an ideal square wave. It is commonly expressed as a percentage or a ratio.Ī 50% duty cycle means that the high state takes half of the time and the low state takes the other half of the time. The Duty Cycle of the PWM signal refers to the ratio of the time that the signal is in a high (on) state over the total time it takes to complete one cycle.
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