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Hello, friends.

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Today I will tell you how to generate signals using an eye tracker.

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Basically, in this case I am just using a blink led code.

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I just write blink Led code in the python.

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And using this code we have to write these signals because in the case of Blink Led, we have both the

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signals.

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That is true and false.

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In this case I just use loop and this is also an example of for loop.

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So for that purpose I just import and I type max.

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Then this is the library.

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And after this, I just use time.

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I just want to import time because I want to just place after how much time it will generate to and

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how much time after how much time it will generate force.

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So I just import

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time library from Python.

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The syntax is import time.

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After this I just start the task or just assign a variable task in this.

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Task.

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It is an I.

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I just call the library.

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Then you have to just assign the pen and it's operation.

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So it is task.

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It is digital output pin because I want to generate digital signal.

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Channels.

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Add channel.

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The Excel output

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channel.

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And inside this you have to just put the device name.

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My device name is Dave one.

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Then you have to just put port zero.

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I'm using and the line zero, as you see on the hardware part over here, this is my port zero line

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zero pin.

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This is my ground.

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I just connect port zero pin to the positive pin of led and ground pin to the negative of Led.

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After this, you have to just start the task.

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Does not start.

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Well, then you have to assign an initial value.

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And my value variable is value.

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I just put true inside it.

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Initially, the initial value is true, and I just also put a variable that is n for how much time or

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how many signals my for loop generate in this case.

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So I just put in this case only ten.

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So my blink time, I just also put a variable blinking time.

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Blink time.

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You can use any variable name.

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I'm just using blink time.

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So it is let's say one.

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It is in seconds.

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Okay.

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So in the place of one, let's say it is two seconds.

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Okay, so now you have to just write loop.

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So my syntax for for loop is for variable K in range.

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Off.

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And this is my loop.

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An indentation or Here, you have to just write task.

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And and say this just put the variable that is the value.

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Then you have to just put how much time it will sleep for, how much time it will sleep.

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So syntax is time to sleep.

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And over here you just put that time variable that is blink.

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Blink time.

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After this, you have to just put the value

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because I want to change the value after this particular time.

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Negate this.

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It is not value.

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I'm using the syntax.

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You can also put some first in the case.

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Let's say you just write true.

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After that, write false.

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You can use this also.

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I want to just check the value written by the code to the hardware part.

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I want to check these value on the software part also so that that purpose I just use print command.

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And inside this I just put value variable because this value variable will generate signals for my deck

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card and for my software part also.

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Then you have to just stop the task.

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And close the task.

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So this is the code.

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The.

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Save it.

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Let's run it.

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As you see right now, it is writing false.

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True.

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False.

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True.

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False.

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Through.

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Close to it will write only ten times because initially I assign these values.

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If you want to write for multiple times, in that case, you just go to the code

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over here, change the value.

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Let's say you want to write only five times and blink time.

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You want to change, let it is three seconds.

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Just save it and run it.

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Now, it will generate only five value in the previous case.

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It will generate ten values.

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You can check.

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It will generate only five values.

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If you want to work with this for a long time, you just put the time inside this and the values inside

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this.

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So as you see, it will generate false.

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True.

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False.

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True.

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False.

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Only five signals.

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This is how you can use blink program to generate or to blink Led or you can say how to use for loop

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inside the python for hardware purpose.

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So it is also an example of for loop.

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This is all about today's lecture.

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Thank you.