Скачать с ютуб 7) Arduino segnale PWM в хорошем качестве

7) Arduino segnale PWM

PWM (Pulse Width Modulation) is a technique used in Arduino and other microcontroller-based systems to generate analog-like signals using digital outputs. It works by rapidly switching a digital output pin on and off at a specific frequency. The ratio of time the signal is on (high) versus off (low) within each cycle, known as the duty cycle, determines the average voltage level of the output signal. Here's a breakdown of how PWM works: Digital Output: The Arduino generates a digital signal that oscillates between fully on (HIGH) and fully off (LOW). This digital signal is typically generated using timers within the microcontroller. Frequency: PWM signals have a fixed frequency, which is the rate at which the digital signal oscillates between HIGH and LOW. In Arduino, the frequency can be set using specific functions such as analogWrite(). Duty Cycle: The duty cycle is the percentage of time the signal is in the HIGH state compared to the total period of the signal. It determines the average voltage level of the PWM signal. For example, a 50% duty cycle means the signal is HIGH for half of the cycle and LOW for the other half. Analog-like Output: Although PWM signals are digital, by varying the duty cycle, you can effectively create an analog voltage level. This is useful for controlling devices that require analog input, such as LEDs (for brightness control) or DC motors (for speed control). Applications: PWM is widely used in various applications, including motor speed control, LED dimming, audio generation, and more. It provides a simple and efficient way to control analog devices using digital circuits. Arduino provides built-in functions like analogWrite() to generate PWM signals on certain pins. These functions abstract away the complexity of setting up timers and generating PWM signals manually, making it easy for beginners to work with PWM in their projects. #electronic #tecnology #elettronica #tecnologia #arduino #369 #viralvideo