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What does Millis do in Arduino?
The millis function returns the number of milliseconds that your Arduino board has been powered up. In other words, when you upload your sketch to your Arduino, as soon as the upload is complete, the clock starts. Millis returns the number of milliseconds that have passed since this upload was completed.
How fast does Arduino loop?
16 megahertz
How fast does it execute the loop? It depends on which Arduino board you’re using, but an Arduino Uno has a clock speed of 16 megahertz. So that means that 16 million instructions are happening every second on the Arduino!
When to use delay function in Arduino sketch?
More knowledgeable programmers usually avoid the use of delay () for timing of events longer than 10’s of milliseconds unless the Arduino sketch is very simple. Certain things do go on while the delay () function is controlling the Atmega chip, however, because the delay function does not disable interrupts.
Which is the most accurate delay for Arduino?
Currently, the largest value that will produce an accurate delay is 16383. This could change in future Arduino releases. For delays longer than a few thousand microseconds, you should use delay() instead.
When to use delay or blink in Arduino?
For alternative approaches to controlling timing see the Blink Without Delay sketch, which loops, polling the millis () function until enough time has elapsed. More knowledgeable programmers usually avoid the use of delay () for timing of events longer than 10’s of milliseconds unless the Arduino sketch is very simple.
What can you do with an arduino microcontroller?
Arduino is a technology platform comprised of simple, inexpensive microcontrollers (tiny, single-program computers), and a robust programming and development language. Together they can be used to create all kinds of interesting, useful, and downright amazing electronics projects.