I tryied to print the numbers using different interval times (eventTime_1 and eventTime_2), but it didn't work. This code problem is a part of bigger project. I could use delay function, but i want to use millis function, because i don't want to block the code using delay in loop. I'm trying to print in Serial screen the number 1 - 6, ONE number every 5 seconds (I'm trying only with number 1 and number 2 for smaller and easier to undestand and modify code). PinMode(led, OUTPUT) // initialize the digital pin as an output.I don't know if someone else asked this before. int led = 13 unsigned long delayStart = 0 // the time the delay startedīool delayRunning = false // true if still waiting for delay to finish This sequence, while very long, and random, is always the same. Here is how NOT to code a delay in a sketch. randomSeed() initializes the pseudo-random number generator, causing it to start at an arbitrary point in its random sequence. This instructable is also on-line at How to code Timers and Delays in Arduino Step 1: How Not to Code a Delay in Arduino The millisDelay library provides functionality delays and timers, is simple to use and easy to understand for those new to Arduino. If you already understand why you should not use delay() and are familiar with Arduino, the importance of using unsigned longs, overflow, and unsigned subtraction, then you can just skip to Using the millisDelay library (Step 4) So how long can we run this timer How high can the Arduinos hardware clock count to The answer is 4,294,967,296 This means you can run the sketch for almost. Minutes and Seconds and Days can only have a maximum value. The largest value it can return is over 4 billion (4,294,967,295 to. As noted previously the variable days can only have a maximum value of 49.7 days. There are also examples of single-shot and repeating timers. You may have noticed that the value the millis function returns can end up being VERY large. The second is an example of code the works and the third is an example of using the millisDelay library to simplify the code. ![]() ![]() The first one is an example of how you should NOT write the code. Here are a number of simple sketches each of which turns a Led on when the Arduino board is powered up (or reset) and then 10sec later turns it off. This page explains in a step by step way how to replace Arduino delay() with a non-blocking version that allows your code to continue to run while waiting for the delay to time out. However, replacing delays requires some care. Using delay() causes your system to be stuck while waiting for the delay to expire.
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