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Hello and welcome.

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In this lesson, we are going to take on the PWI campaigns of the E.S.P board, all 36 of the E.S.P

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32 general-purpose input output, Penns has a capability.

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This is a really great thing.

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But we must use more complex code to reach the same result on other pens.

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So let's program one of the general purpose and output with an output signal.

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Now, if you want to this schematic, all this pan out for various people, you can see that all of

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these pins can be used to generate PWI and signals.

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The first thing that you need to think about when programming a signal is its frequency.

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You need to generate that signal at a certain or a specific frequency.

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We will use a value of 5000 hertz that works fine with our lit.

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We must also specify that PWI channel and the resolution of the duty cycle.

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I want.

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Explain that one, because you must have some basic knowledge about bwl signals, but what it takes

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is a resolution, a channel and a frequency.

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So after specifying that duty cycle, using that resolution and the frequency and the channel, we can

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start programming, we can choose a channel from zero to 15 and a resolution between one and sixteen

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bits.

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We will use a Channel zero and a resolution of eight bits.

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So let's get started.

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That's good.

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According to a new sketch.

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And here's a new sketch.

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Let's define some variables.

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First, we need to define the frequency and frequency and let's make it 5000.

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Then we need little channel.

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Let's make it zero.

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And we need that resolution.

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And let's make it eight.

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Now let's use the general purpose, input output will number two, where we have our lead or our externally

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connected or attached.

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It's it also has a built in lid that can be used.

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So these parameters must be defined inside the setup function.

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So let's go.

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And why this code?

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Now, what we are going to inside the setup function won't be something we are used to.

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We are going to let's see Atash PIN and Lizzi set up.

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Now the Lizzi Atash pin and let's use it up.

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There are basically functions for the arm configuration.

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They are very similar to analog right function on Arduino.

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So now they aspy.

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Doesn't support an underground function, but it does support a much better one, which is the one that

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you already mentioned.

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Let's see right then.

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Let's see.

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Like function is very similar to analog, right.

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It also requires two parameters that and channel that we want to write a value to.

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And that bwl value.

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We want to write to the selected channel.

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Now, let's first finish the setup function, now the let's see setup function.

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We'll take three parameters, the first one will be the lead channel.

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The second one will be the frequency.

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The third one will be the resolution, which we already find up there.

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Next, we are going to assign a link to that channel.

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So let's see Atash Penn now the lead Penn we already choose is to and we want to attach it to that channel

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that we have chosen.

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This is it.

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This is how you finish setting up that BW, um, frequency resolution and channel and how you can attach

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it to any output pin.

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Now to turn on the lid, which is connected to PIN number two, using the Red Channel outward from the

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BW um, signal, we need to set a specific brightness now to turn the light on or off.

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We must define that duty cycle, for example, turn of the lid that each cycle must be zero and the

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function lid see right that we already mentioned can be used inside the room to set the brightness to

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zero.

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Now.

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We can use that function right now.

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That's right, let's see.

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Right.

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It's exactly like analogue, right?

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And it takes two parameters.

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The first one is the lead channel, which is this variable, and the second one is the duty cycle.

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Now, you can add in duty cycle here.

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And at zero, this will turn off valid because we have since zero.

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To the lead channel, which has been number two, and it will set the protest to zero now different

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values of the news cycle.

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We'll turn on the lead with different priorities now, this variable can be from zero up to 255 once

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the resolution used is eight bits.

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If we used a 10 bit resolution, it can go from zero up to 1024 or 1023 and so on.

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We already mentioned that you can choose a resolution between one and up to 16.

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So that choice is yours.

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But you need to make sure that you are choosing a cycle that matches your resolution.

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So in a better solution, that cycle will be between zero and 225 255.

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OK, now that we are done with this, we can use that potential.

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We connected to the analog pin from the previous lesson to control the brightness of that lead.

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Or we can simply send values now to test this out.

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Let's complete the code.

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Let us first and the setup menu.

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Add serial dowbiggin and choose a moderate one hundred fifteen thousand two hundred, then add odelay

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delay as usual for one second

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after the delay.

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Let's write a sentence to make sure that everything is working correctly.

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Trend line and let's limit this thing readable are OK.

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Now we have a valid set up and the C Atash pen and we can use that.

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Let's see right up here.

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And the first value that will be written is zero so that it will be off now inside the void loop.

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We can send other values we can send.

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Duty cycle.

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Let's define this cycle here plus.

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Equal plus one and let's add odelay.

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Let's make it 15 milliseconds.

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OK, now let's move this line down here, it will start with zero, then it will be plus one or let's

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make it blastin and it will keep moving until it reaches 255.

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We can add and if statement Bartletts this this called out.

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Let's first upload the code or verify it to make sure it doesn't have any errors.

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Let's save it.

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BW on this thing.

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OK, Duncan, comparing now let's upload the code.

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So we should we should underline to make sure that we will prevent that cycle.

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We want to combine the cold, but for now.

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Let's put it so that we can get that cycle here now.

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Let's recompile the code for the fight again.

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Now, let's it.

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OK, now.

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As you can see, it went above to 155 very fast, so we need to control this.

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Once that cycle reaches, its cycle is over equal to 125.

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We needed to reset to zero.

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Now, let's call it again.

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Now, let's upload it.

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OK, Don, now, as you can see, once it reaches 255, it resets to zero, and from your E.S.P ball,

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you can see that apelt and let all accelerate that you are connecting is fading in and out using this

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very simple code now.

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Now, let's summarize what we did.

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This lesson.

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We have set the frequency to 5000.

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We have choose the channel to be zero and we have chosen the resolution to be eight, which means that

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we have to cycle between zero and 255.

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We started with a cycle of zero and eventually the zero communication here.

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We used new functions.

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Let's use set up to set up that B.W. frequency channel and resolution.

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And this Lizzi Atash been to attach that one function to us and to a specific pin, which has been number

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two here.

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And the LCD right is basically like analogue.

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Right.

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It takes a channel and that you cycle and the it's a value to that channel.

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Now, in this fight, Lou, we have used the lead channel, which was already attached here to be number

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two, and that would cycle and we kept increasing the cycle by 10.

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And printed on the Tehran monitor.

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Now, once that music reaches 255, which is the limit here, we did the say that cycle to zero to repeat

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the process again.

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And that is how you can fit and using PWI signal.

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You can apply this to any other thing.

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You can choose better resolution.

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In that case, if you choose 10 better resolution, you will get values between zero and one thousand

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twenty three.

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So in that case, this statement will be one thousand twenty three instead of a set of 255.

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That said, I know that this was a long classen, but I wanted to explain.

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I'm using an example.

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I hope that everything is now well explained to you.

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If you have any questions regarding anything you can ask.

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This is Ashraf.

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So your next lesson, happy learning.

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This is educational engineering team.