Implementing a "WaitForTick" logic in your EV3-G program Pro Preview

Sometimes when we are working with sensors like the gyro sensor here it is important that the time between the different samples - different consecutive samples is the same. This will make each sample equally important and independent on how much time it took to take it. In this video tutorial we would use the EV3-G timer block to make a Wait for tick program where the time between each sample of the EV3 gyro takes exactly 0.02 seconds. This is actually quite simple to implement and what I'll do is to delete everything in our program like this and I'll just leave these two blocks. And these are the two blocks that we need. First, at the beginning of the loop we reset one of the timers and we have like 8 timers so we reset one of the timers and then at the end of the loop we have this wait block. And in this wait block we wait for timer 1 to become equal to or more than 0.1 seconds or as I said in the introduction we can make it to 0.02 seconds. And we can put some logic in between. We can put some logic for detecting the gyro sensor or the color sensor or some other sensors and some calculations and what will happen is that the timer will reset these calculations and these samples will be taken and at the end when the time is less than 0.02 seconds, we'll just wait. And this will make sure that each sample takes at least 0.02 seconds or at least 0.1 second. And this makes all the samples equally important. Because sometimes the gyro sensor or the color sensor might return the value after 0.01 second or after 0.02 seconds we don't know this and this very much is out of our control but what we want to have when we doing an experiment is to have each value equally important and each sample equally important. So, we say: We don't want to have a value that's taken just as a very quick sample. We want to have each sample taken after at least 0.01 second. So, these are a hundred milliseconds.