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Arduino microcontrollers rely on timing and delay functions to control hardware accurately. Understanding how to calculate and implement these delays is essential for precise operation of sensors, motors, and other peripherals.
Basics of Arduino Timing
Arduino timing involves controlling the duration of events using functions like delay() and millis(). The delay() function pauses program execution for a specified number of milliseconds, while millis() returns the number of milliseconds since the program started.
Calculating Delay Durations
To achieve accurate timing, it is important to convert desired time intervals into milliseconds. For example, a delay of 2 seconds equals 2000 milliseconds. When working with hardware that requires precise control, these calculations help in setting correct delay durations.
Practical Delay Examples
Suppose you want an LED to blink with a 1-second interval. You can implement this using the delay() function:
delay(1000); pauses the program for 1 second. For more complex timing, using millis() allows non-blocking delays, enabling other tasks to run concurrently.
Common Pitfalls and Tips
Using long delays can make programs unresponsive. To avoid this, prefer non-blocking timing methods like millis(). Always verify your delay calculations to ensure timing accuracy, especially when controlling multiple devices.