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Hi, welcome to the last lecture in this section, in this lecture.

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I'll show you how to read a value from a potential error and then use it to drive.

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And using GWM this potential race, regular 10 kiloton potential murder.

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I have connected to your 34 right here.

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And I've got one pin going to the three point three volt power rail and the other one to ground.

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Let's have a look at the sketch.

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There's a couple of interesting things happening here.

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First of all, as you can see here in my notes, we will be using the ADC, the analog to digital converter,

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to take readings from the potential mirror, and then we'll convert those readings to an appropriate

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peak in value.

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Now, the thing to remember is that by default, ATC producer values 12 bits, which means that the

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range of an ATC value goes from zero to four thousand and ninety five.

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And as you've seen in the previous election, the Section PITIABLY and Values Pettifor have 10 bits

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in width, so values ranging from zero to one thousand point twenty three.

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And therefore we need to do a little calculation to scale the ADC value into a P value.

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And this calculation is simply divide the range of the M by the range of the ADC and that will give

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us the scaling factor, which happens to be three point twenty four, probably closer to zero point

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twenty five.

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But OK.

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And we'll see what values come out later.

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And that means that you just multiply whatever comes out of the ADC by zero point twenty four and that

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will give you a new value that is within the range.

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I also have the documentation for the ATC here.

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I'm going to refer to this in a moment.

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And there's also documentation for a built in python function called E.A. Integer that converts floating

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point in this into integers.

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Again, we need to make this conversion from floating point to integer in sketchiest.

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You'll see in a moment.

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Let's have a look at the script.

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So we need to first import ADC pain and P m from the machine module and sleep from the time module.

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Here I'm using sleep, which allows me to define a sleep time in seconds instead of milliseconds of

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time.

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In some of the previous scripts in line thirty nine, I create the M object ytterbium twenty one.

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Just to make it easy for me to remember that this is connected to Shapir twenty one and for the ADC

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I'm using pin thirty four as I said earlier and using ADC constructor in the object.

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Now here's one interesting way to configure the attenuation of your ADC.

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The analog to digital converter is to use the atin function.

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You can find out what the available attenuation levels by having a look at the documentation but hyperlink

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to right here.

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Let's check it out.

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It is this section of the document and there is the attend function and these are the available attenuation.

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So zero degrees with those two and a half decibel, six and eleven.

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And I've gone for the eleven decibel attenuation which gives me maximum input voltage up to three point

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six volts.

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So depending on what it is that you are connecting, you can choose the appropriate attenuation.

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You can also control the width of your analog to digital converter.

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I'm not doing that here.

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I'm just leaving it to its default.

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Twelve page.

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You can see you can go for nine, ten, eleven, twelve bits for the width.

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OK, and moving on now, I've got a infinite loop here, while true, start by taking reading of the

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potential murder, using the read function, then I multiplied by the scaling factor, your point twenty

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four that I calculated up here.

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And that gives me a floating point that I need to convert it to an integer using the anti function.

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And I stole the result in PWI and then in line 47 or print out those two numbers so I can see the original

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and the scaled number, then use that to set the short cycle for the entity.

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And then take a little nap for zero point one seconds, OK?

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Let's try this out, I'm going to get a copy of the script on the device log.

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Great report, which is connected to Perio 34 Togepi y.

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Yes, but an earlier version of this earlier this script to double click on it, you open it up, can

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you get rid of the other two?

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So that does confuse me as to which script I'm uploading to my hospitality.

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And this is the one that I want to upload.

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So let's do it.

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You go right, you can see the current values for the potential.

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Let's move at One Direction.

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Then you saw moving the early days, becoming fainter to goes off, let's go to the other extreme.

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Trying to do this in a nangle, simple, all right, going up in this chaos, and that's the maximum,

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you can see that the potential murder is at four thousand ninety five is nine hundred and eighty two,

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which means maybe I can increase this factor by maybe as much and that they allow me to go for the full

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MGD cycle extent without going over it.

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So save and play soldier one thousand twenty three point twenty five Scaling factor, which works out

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perfectly.

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Right.

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So that's how you can use the ATC and your is pathetic to using micro python.